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If your 2018-present Jeep Wrangler is showing rough idle, reduced fuel economy, or intermittent misfires, swapping the ignition coils is one of the most effective fixes you can make. This guide covers the top seven ignition coils we shortlisted for the 2018-present Wrangler range, including common JL and JLU era fitment notes for recent models. Each pick is chosen for proper fit, heat tolerance, and electrical reliability so you can restore consistent spark and driveability. Below you will find the selected options and the evaluation criteria we used to compare them, plus practical advice on symptoms, testing, and DIY replacement for Wrangler owners.
Looking for other parts? See all Jeep Wrangler parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | PHILTOP UF807 Ignition Coil Pack Kit (6-Pack) |  |
| Best Quality Built to a higher standard if you want something more solid | TRQ 6-Piece Ignition Coil Set (ICA65527) |  |
| Best Value The sweet spot between price and what you get | ECCPP Ignition Coil Pack — 6‑Pack UF807 |  |
| Best Budget The cheapest option that still gets the job done reliably | HMJXF UF807 Ignition Coil for 3.6L Pentastar V6 (1-Pack) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Bosch 0221504048 Ignition Coil |  |
| Most Popular A crowd favorite that many people choose with confidence | SYKRSS UF807 6-Pack Ignition Coil Pack Kit |  |
| Best Seller A high-volume bestseller chosen again and again | autoexact Ignition Coil Pack and Iridium Spark Plugs Kit (UF807) for 3.6L V6 |  |
1. PHILTOP UF807 Ignition Coil Pack Kit (6-Pack)
| Included Components | 6x Ignition Coil – UF807 |
|---|---|
| Installation Type | Bolt-On |
| Automotive Fit Type | Vehicle Specific Fit |
| OEM Equivalent Part Number | 68223569AB |
These PHILTOP UF807 coils are a budget-friendly, vehicle-specific replacement intended to restore reliable ignition on 3.6L V6 engines. Sold as a six-pack, they are bolt-on units that match the listed factory interchange numbers and plug directly into the factory harness. In use they are meant for routine tune-ups or resolving misfire codes; buyers report smoother idle, restored throttle response, and cleared diagnostic trouble codes after swapping a full set. Notable features called out by the manufacturer include fast ignition response, RF interference protection, corrosion resistance to elevated temperatures, and a claimed lifespan suitable for typical preventative maintenance intervals. Practical benefits include straightforward installation and cost savings versus buying individual factory coils. Limitations to consider are occasional stiff connector locking tabs that can make plug installation firmer than factory parts and mixed longevity reports from some users, so monitoring after installation is advisable.
Best for: Drivers who want an affordable, direct-replacement coil pack kit to restore smooth idle and correct misfires on a 3.6L-equipped Jeep Wrangler as part of routine maintenance or a full-bank tune-up.
Less Ideal for: Those who prioritize extended OEM-level longevity or who prefer individual OEM coils for selective cylinder replacement should consider factory-brand options or buying single coils instead.
- Vehicle-specific fit and listed OEM interchange numbers for direct replacement
- Sold as a complete six-pack to service an entire V6 ignition bank at once
- Bolt-on installation designed for straightforward, plug-and-play replacement
- Manufacturer notes corrosion resistance and RF interference protection for stable performance
- Some users report rigid connector locking tabs that require extra force to seat
- Mixed user reports on long-term durability compared with original factory coils
Verdict: A cost-effective six-pack of direct-fit coil packs that restores ignition performance for 3.6L Wrangler owners needing a complete-bank replacement.
2. TRQ 6-Piece Ignition Coil Set (ICA65527)
| Brand | TRQ |
|---|---|
| Connector Gender | male |
| Installation Type | Bolt-On |
| Automotive Fit Type | Vehicle Specific Fit |
| Model | TRQ ICA65527 6 Piece Ignition Coil Set |
The TRQ 6-piece ignition coil set replaces worn coils with pre-assembled, bolt-on units intended to match factory fitment. For routine replacement on 2018-and-newer Jeep Wrangler engines covered by this part number, the kit simplifies installation and reduces time in the bay since no modifications are required. The coils use a rubber/silicone/phenolic resin shell to protect boots and help prevent premature wear, and customers report improved idle smoothness, elimination of misfires, and crisper throttle response after installation. Build quality appears solid for an aftermarket option and TRQ provides installation videos to guide DIYers. Expect the usual aftermarket trade-offs: some users report connector locking tabs that fit a little tightly or occasional early failures, so long-term durability may vary by vehicle and driving conditions. This is a practical choice to restore engine performance quickly without the higher cost of a dealer replacement, but keep a close eye on initial fit and test for misfires after installation.
Best for: Someone upgrading or restoring ignition performance on a 2018-or-newer Wrangler who prioritizes immediate drivability gains and prefers a cost-effective, DIY-friendly replacement.
Less Ideal for: Buyers seeking an extended-lifespan or backed dealer-only replacement may prefer to choose a branded dealer part with manufacturer warranty and dealer support.
- Complete six-coil kit for replacing all cylinders at once
- Direct-fit, bolt-on design that requires no modifications
- Protective rubber/silicone/phenolic boot to reduce premature wear
- Includes online installation videos to assist DIY repairs
- Some users report connector locking tabs that do not seat perfectly on first try
- Mixed reports on long-term durability with a few early failures noted
Verdict: A practical, budget-friendly six-coil direct-fit kit to quickly restore smooth running and eliminate misfires on 2018‑present Jeep Wrangler engines.
3. ECCPP Ignition Coil Pack — 6‑Pack UF807
| Compatible with Vehicle Type | Jeep Grand Cherokee 2016–2018, Wrangler (3.6L) and similar 3.6L V6 applications |
|---|---|
| Included Components | ignition coil (6 count) |
| Part Interchange Info | 68223569AB, 68223569AD, UF807 |
| Installation Type | Bolt-On |
These ECCPP ignition coils are a budget-focused replacement pack sold as six units for vehicle-specific fitment on 3.6L V6 models. They install as bolt-on factory-style coils using the standard female connector and claim compatibility with 2016–2020 Grand Cherokee and Wrangler variants and similar 3.6L applications. In practice they are used to restore spark to cylinders after a failed coil or during a full-coil refresh; many buyers report straightforward installation and improved running when all coils are replaced together. Notable features include epoxy resin insulation rated for high temperatures and a rubber contact boot intended to resist leakage and vibration. The practical benefits are lower cost for replacing multiple coils at once and a direct fit that avoids wiring or mounting changes. Limitations to expect are variable longevity compared with higher-end factory-brand coils and occasional fitment confusion when vehicle configuration is not double-checked; for some users mixing new coils with older originals caused drivability issues, so changing the whole pack is often recommended.
Best for: Buyers who want a cost-effective, direct-replacement coil pack to restore ignition performance on 3.6L V6 Wrangler-family vehicles and prefer replacing all coils at once to avoid mixing old and new components.
Less Ideal for: Drivers who prioritize maximum long-term durability or prefer dealer-sourced factory coils for extended warranties should consider higher-end OEM or dealer options instead.
- Sold as a six-pack so you can replace all cylinders at once to avoid mismatch issues
- Vehicle-specific bolt-on design with standard female connector simplifies installation
- Epoxy resin insulation and rubber boot construction designed for high-temperature and vibration resistance
- Lower cost per coil compared with many factory-brand replacements
- Not a factory-brand unit so long-term durability can vary between vehicles
Verdict: If you need an affordable, direct-fit six-pack to quickly refresh all ignition coils on a 3.6L Wrangler-family vehicle, this ECCPP set delivers straightforward installation and value.
4. HMJXF UF807 Ignition Coil for 3.6L Pentastar V6 (1-Pack)
| Automotive Fit Type | Vehicle Specific Fit |
|---|---|
| Connector Gender | male |
| Included Components | 1 x New Ignition Coil |
| Installation Type | Bolt-On |
| Manufacturer Warranty Description | 1 Year |
This HMJXF UF807 single ignition coil is a direct-fit replacement designed for the 3.6L Pentastar V6 found in recent Jeep Wranglers and other Mopar vehicles. It installs as a bolt-on unit and uses the same connector style and terminal resistance as the factory coil for straightforward swapping when a single cylinder is misfiring. The coil is built with copper windings and a high-dielectric resin intended to resist under-hood heat and voltage stress, which helps reduce ignition-related faults and restore smooth idle, throttle response, and fuel economy compared with a failing coil. Practical benefits include resolving misfire codes and avoiding the cost of replacing an entire set when only one coil has failed. Limitations are that this listing is for one coil only, so buyers replacing multiple failed units will need to purchase additional pieces, and long-term durability will depend on installation environment and driving conditions.
Best for: Drivers looking to fix a single-cylinder misfire or restore normal running on a tight budget who prefer an affordable, vehicle-specific replacement rather than replacing the full coil set.
Less Ideal for: People who want a complete performance overhaul or who prefer to replace all coils at once for long-term preventative maintenance may find a multi-pack or OEM-specified kit more convenient.
- Vehicle-specific fit for 3.6L Pentastar V6 applications for straightforward plug-and-play installation
- Built with copper windings and high-dielectric resin to resist under-hood heat and high-voltage stress
- Direct replacement for multiple factory part numbers, matching terminal resistance for compatibility
- Bolt-on installation and single-pack option lets you replace only the failed coil
- Sold as a single coil, so replacing all cylinders requires multiple purchases
Verdict: A budget-friendly, vehicle-specific single replacement coil that gets a misfiring 3.6L Jeep Wrangler back to smooth running without replacing the entire set.
5. Bosch 0221504048 Ignition Coil
| Model Number | 0221504048 |
|---|---|
| Item Type Name | Ignition Coil |
| Installation Type | Bolt-On |
| Connector Gender | female |
This Bosch ignition coil is a bolt-on replacement designed to restore reliable spark delivery for engines that use this specific coil design. It supplies stable high voltage to the spark plug, which helps cure misfires, smooth idle, and improve cold-start performance when a worn coil has been causing rough running. Typical use is direct replacement during routine ignition-system repairs or when troubleshooting cylinder misfires; installation is straightforward and uses the vehicle's existing connector and mounting. Notable features include corrosion-resistant electrical connections and engineering intended to meet or exceed factory specifications for temperature and vibration resistance. In practice that means reduced chance of early failure compared with cheaper off-brand coils and consistent ignition energy under normal driving conditions. Limitations are that fitment is vehicle- and engine-specific so you must verify it matches your Wrangler's model year and engine; it does not address problems caused by worn plugs, wiring, or fuel/air issues.
Best for: Buyers seeking a reliable, factory-quality replacement coil to fix misfires or restore smooth idle on a 2018-or-newer Wrangler prioritizing longevity and consistent performance.
Less Ideal for: Owners who need a universal or performance-tuned coil or who have ignition issues caused by spark plugs, wiring, or fuel delivery rather than the coil itself should look elsewhere.
- Built to meet or exceed factory-quality specifications for ignition performance
- Corrosion-resistant connections for consistent electrical contact
- Designed for strong temperature and vibration resistance to extend service life
- Bolt-on installation uses existing connector for straightforward replacement
- Fitment is vehicle- and engine-specific so it may not be compatible with all Wrangler configurations
Verdict: Choose this Bosch coil when you want a direct, factory-quality replacement that prioritizes dependable ignition and long-term reliability for your 2018-or-newer Jeep Wrangler.
6. SYKRSS UF807 6-Pack Ignition Coil Pack Kit
| Applicable engines/vehicles | 3.6L V6 — select Chrysler/Dodge/Jeep/Ram 2016–2021 |
|---|---|
| Unit count | 6 coils |
| Manufacturer part number | SY7545002 |
| Installation type | Coil Pack |
| Part interchange | 0221504046, 49185, 5219, 5C2253, 68223569AB |
This SYKRSS UF807 kit supplies six ignition coils intended as direct-fit replacements for 3.6L V6 vehicles in the specified model years, including Wrangler applications within that range. Installation is the same as swapping factory coil packs: disconnect the electrical connector, remove the old coil, and seat the new unit with its housing and connector clips. The listing highlights construction materials like silicon steel cores, enameled copper windings, epoxy resin, and reinforced rubber sleeves to resist heat and voltage stress, and the kit includes an installation guide. In use these coils reportedly resolve misfires, rough idle, and hesitation when they match correct fitment. Customer feedback is mostly positive for fit and value, though there are isolated reports of failures on some vehicles, so careful verification of part numbers and post-install testing is advisable. This kit is a practical option for DIY replacement or for a shop doing a full-bank swap, but if you prioritize brand-name OEM coverage you may prefer a manufacturer-branded coil instead.
Best for: Buyers who want an affordable, full-bank replacement kit to restore ignition performance on 3.6L V6 Wrangler models from the covered years and who prefer a component that is marketed as a direct-fit, DIY-friendly swap.
Less Ideal for: Those who need guaranteed factory-brand parts or extended dealer-backed warranties should consider OEM-branded coils or dealer replacements instead.
- Sold as a complete 6-coil kit for replacing all cylinders at once
- Marketed as vehicle-specific fit for 3.6L V6 Chrysler/Dodge/Jeep/Ram models in the listed years
- Materials and sealing designed to resist heat and voltage stress for improved durability
- Includes installation guide and comes with housing for straightforward DIY or shop fitment
- Some user reports of premature failure or engine issues on a small number of vehicles, so results may vary
Verdict: If you need an affordable, full-bank direct-fit replacement to fix misfires and hesitation on 3.6L V6 Wrangler models, this 6-pack offers a DIY-ready option with solid value.
7. autoexact Ignition Coil Pack and Iridium Spark Plugs Kit (UF807) for 3.6L V6
| Included components | 6 ignition coils, 6 iridium spark plugs |
|---|---|
| Fitment | Vehicle specific for 3.6L V6 (UF807 interchange) |
| Installation type | Coil-on-plug |
| Manufacturer warranty | 2-Year Manufacturer Warranty |
This kit pairs six ignition coils with six pre-gapped iridium spark plugs designed to replace the factory units on 3.6L V6 engines. It is intended for plug-and-play coil-on-plug installation, so mechanics and experienced DIYers can swap the set without modifying wiring or mounts. The coils are epoxy-potted for improved heat resistance and the iridium plugs promise a longer service life and more consistent sparks, which can reduce misfires, smooth idle, and help restore throttle response and fuel economy. The set is sold specifically to match the UF807 interchange numbers, and the manufacturer recommends replacing all coils and plugs together to balance performance. Limitations to consider are that longevity claims depend on driving conditions and maintenance, and this aftermarket kit is an alternative to factory parts rather than the vehicle maker’s own branded components.
Best for: Buyers who want a low-risk, factory-style replacement to fix misfires, rough idle, or loss of power on 3.6L V6 Wranglers and prefer a complete kit to restore balanced ignition performance quickly.
Less Ideal for: Those looking for performance-tuned ignition upgrades or specialty racing parts should consider high-performance coils or tuning options instead.
- Complete set of six coils and six pre-gapped iridium spark plugs for one-step replacement
- Designed as vehicle-specific, plug-and-play coil-on-plug units to match factory fit and connectors
- Epoxy-potted coils and fine-wire iridium plugs aimed at improved heat tolerance and longer service life
- Includes parts that cross-reference common OEM part numbers for easier fitment verification
- Service life and performance can vary with driving conditions so mileage estimates are not guaranteed
- Aftermarket supplier rather than vehicle manufacturer branded part, which may concern strictly factory-preferring buyers
Verdict: A ready-to-install, vehicle-specific coil and iridium plug kit that provides a straightforward, lower-risk way to restore smooth ignition and address misfires on 3.6L V6 Jeep Wranglers.
Choosing the Right 2018-Present Jeep Wrangler Ignition Coil: Key Factors to Consider
Fitment and Connector Compatibility
Correct mechanical fit and matching electrical connectors are essential for a hassle-free installation. The 2018-present Jeep Wrangler uses specific coil mounting points and plug shapes; a coil that mirrors those dimensions reduces the chance of loose connections or stress on the wiring harness. Connector compatibility also affects diagnostic clarity. A properly mating connector preserves the ECU's ability to monitor coil performance and report misfire codes accurately. When fitment is uncertain, owners often face additional labor to adapt brackets or replace wiring, so prioritizing direct-fit coils saves both time and reduces failure risk.
Thermal Durability and Insulation
Under-hood heat, particularly near the exhaust and turbocharger on certain engines, accelerates insulation breakdown and internal arcing. Good ignition coils use high-temperature resins and robust insulation to maintain dielectric strength over many heat cycles. Thermal durability influences both lifespan and consistent spark energy. Coils rated for higher temperature ranges are less likely to develop internal shorts or cracked housings, which are common failure modes on Wranglers used for trail driving or extended idling.
Electrical Specs and Output Consistency
Primary and secondary resistance values, as well as coil induction characteristics, determine the voltage available at the spark plug. Coils that stay within the OEM-specified electrical range deliver predictable spark energy and reduce the risk of misfires, rough running, or triggered fault codes. Consistency from coil to coil matters when replacing multiple units. Variations in output between cylinders can cause uneven combustion and complicate troubleshooting. For multi-coil replacement, matching electrical specs across all installed coils contributes to smoother running and easier diagnostics.
Moisture and Vibration Resistance
Wranglers often see wet, dusty, and vibratory environments. Coils with sealed housings and vibration-resistant internals are less likely to suffer water ingress or wire separation. Silicone boots, gasketing, and potting compounds that resist moisture help maintain insulation and prevent corrosion at the terminals. Vibration resistance reduces the chance of cracked windings or loose internal components over time. When coils fail from vibration-induced fatigue, symptoms can be intermittent and hard to trace, so choosing coils engineered for harsh conditions pays off for off-road and daily drivers alike.
Serviceability and Documentation
Clear installation instructions, labeled connectors, and replacement part numbers streamline both DIY and professional swaps. Coils that provide accessible technical specs and follow common torque and routing recommendations reduce the risk of install errors that can create new failures. Serviceability also includes availability of individual coils versus only full sets. For owners replacing a single failed coil, the ability to buy a single unit with the correct part number avoids unnecessary cost and waste. Good documentation also helps when testing and diagnosing ignition-related trouble codes.
Warranty and Long-Term Support
Warranty coverage is an indicator of manufacturer confidence and provides practical protection against early-life failures. Look for terms that cover typical failure modes such as internal short, cracking of the housing, or connector failure. Beyond the warranty, accessible customer support and clear return policies matter when a coil arrives with incorrect fitment or a defect. Warranty and support are not substitutes for proper fitment, but they reduce the risk of being stuck with a bad part after purchase.
Common Symptoms of a Failing Ignition Coil on the Wrangler (JL and JLU Notes)
A failing ignition coil on a 2018-present Jeep Wrangler often presents as rough idle, poor fuel economy, reduced power, or a check engine light with misfire codes. In JL and JLU-series vehicles, intermittent coil failure can be especially noticeable during low-speed maneuvers or immediately after starting from cold when the ignition system is under slightly different load conditions.
Modern Wranglers may set diagnostic trouble codes that point to a misfiring cylinder. Owners should pay attention to when symptoms occur. Heat-soak failures typically appear after extended driving or when the vehicle sits in hot conditions, while cracked boots or moisture-related faults often show up after exposure to rain or deep water crossings.
- Rough or uneven idle
- Reduced throttle response and power
- Check engine light with P030x misfire codes
- Stalling during low-speed driving
- Intermittent misfires that clear after cooling
How to Test an Ignition Coil Safely
Start with non-invasive checks. Scan the vehicle for active fault codes and note which cylinder is misfiring. Swap diagnostic data between cylinders only if safe and practical to see whether the misfire follows the coil. Visual inspection of the boot and connector can reveal cracked insulation, carbon tracking, or corrosion.
For bench measurements, measure primary and secondary resistance with a multimeter and compare readings to the OEM range. Use a dedicated ignition coil tester or a noid-style test method designed for coil-on-plug systems if available. Take precautions: avoid live testing with the ignition on the engine without proper tools, and disconnect batteries when performing insulation or continuity checks to prevent accidental shorts.
- Scan for misfire codes first
- Visually inspect boots and connectors
- Measure resistance and compare to specs
- Use specialized coil testers when possible
- Avoid live spark testing without proper equipment
DIY Replacement Tips for Wrangler Owners
Prepare the work area by letting the engine cool and disconnecting the negative battery terminal. Label or photograph connector positions to ensure correct reassembly. Remove intake components only as needed for access; on many 2018-present Wranglers the coils are accessible with modest disassembly.
When installing new coils, seat the boot fully on the spark plug, torque mounting fasteners to specification, and route the wiring to avoid contact with hot surfaces. After installation, clear any stored misfire codes and perform a short test drive to confirm the fault does not return.
If you are replacing a single coil, inspect surrounding components such as spark plugs and wiring. A failing plug can prematurely stress a new coil. Clean connectors and apply dielectric grease sparingly on terminals if recommended by the coil documentation.
- Let the engine cool and disconnect battery
- Document connector positions before removal
- Torque fasteners to spec and seat boots fully
- Clear codes and test drive after replacement
- Inspect spark plugs and wiring when replacing one coil
Part Numbers, Identification, and Ordering Tips
Locating the correct part number for the 2018-present Wrangler ignition coil starts with the vehicle VIN and engine code. OE part numbers can change between engines and model years within the 2018-present range, so verify the number against your engine variant before ordering.
When comparing part numbers, prefer listings that include matching connector images and dimensional drawings. Avoid options that require splicing or adapter harnesses unless you plan to modify the wiring. If you keep a record of the coil part number after purchase, it simplifies future maintenance and ensures you buy the exact replacement needed.
- Use VIN and engine code to confirm part number
- Verify connector images and dimensions
- Avoid parts that require wiring splices
- Keep a record of the purchased part number for future service
Addressing Misfire Codes and Diagnostic Strategy
A structured approach helps isolate ignition coil faults from fuel or compression issues. Start by recording the exact trouble codes, live data such as fuel trims and misfire counts, and compare cylinder-specific parameters. If a misfire follows a coil when you swap coil outputs between cylinders, that points strongly to a coil issue.
Also consider spark plugs and fuel delivery. High long-term fuel trim or lean readings can place extra stress on ignition components. When codes are intermittent, pay attention to environmental triggers such as temperature or moisture that often indicate coil housing or boot failures rather than plug wear.
- Record trouble codes and live data
- Swap coil signals carefully to isolate faults
- Check spark plugs and fuel trims as part of diagnosis
- Note environmental triggers for intermittent faults
Still looking for the perfect fit?
Select your Jeep Wrangler configuration to see the most relevant Ignition Coils recommendations
How We Chose the Best 2018-Present Jeep Wrangler Ignition Coil
Our selection focused on reliability, correct fitment for the 2018-present Jeep Wrangler lineup, and serviceability under real-world conditions. We prioritized coils that match the OEM electrical connectors and mounting points used across the JL and JLU-generation and later chassis, since secure fitment prevents wiring strain and misfires. Thermal performance and insulation quality were assessed because under-hood temperatures influence coil lifespan on off-road duty. Other evaluation criteria included coil primary and secondary impedance ranges, resistance to moisture and vibration, and the availability of clear installation documentation. We also considered quality-control indicators such as consistent manufacturing tolerances and positive feedback on long-term durability. Products that required wiring modification or lacked clear fitment information were excluded, as were options with known fitment gaps for the 2018-present Wrangler. The result is a shortlist that balances plug-and-play compatibility, durability, and serviceability for owners who expect reliable ignition under both daily driving and light off-road use.
Our full evaluation process is outlined in our review methodology.
FAQ
What are the first symptoms that indicate an ignition coil is failing on my 2018-present Wrangler?
Typical early signs include a rough idle, hesitation under acceleration, decreased fuel economy, and an illuminated check engine light with a misfire code. Intermittent issues that clear after cooling often point to coil heat-related failure.
Can I test a coil at home with a multimeter?
Yes, you can measure primary and secondary resistance with a multimeter to see if values fall within expected ranges. However, resistance checks do not always reveal internal intermittent faults, so additional dynamic testing or swapping may be required for a definitive diagnosis.
Is it okay to replace only the failed ignition coil or should I replace all of them at once?
Replacing only the failed coil is common and cost effective, especially if the others show normal electrical values and no symptoms. If the vehicle has high mileage or multiple coils show wear, replacing the set can reduce future downtime and ensure consistent output across cylinders.
How long does an ignition coil typically last on the Wrangler?
Lifespan varies widely with use and environment. Many coils last well beyond 60,000 miles under normal driving, but heat, contamination, and vibration can shorten service life. Regular inspection and attention to symptoms helps catch failures early.
Will a bad ignition coil cause the Wrangler to stall or not start?
A severely degraded or failed coil can cause hard starting, stalling, or a complete no-start condition for the affected cylinder. Intermittent coil faults can make the engine run poorly without preventing startup entirely.
Final Verdict
For the 2018-present Jeep Wrangler, prioritize coils that offer direct-fit compatibility, strong thermal and moisture resistance, and consistent electrical output. Those features reduce the chance of intermittent misfires and simplify diagnostics. When replacing a single coil, inspect spark plugs and wiring to avoid repeating the failure. For high-mileage or harsh-use Wranglers, consider coils with higher temperature ratings and robust sealing to extend service life and maintain smooth combustion across cylinders.
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