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If your Ram 1500 with the 4.7L V8 is running rough, misfiring, or struggling to start, swapping the ignition coils is one of the most direct fixes you can make. The right Ram 1500 4.7L V8 ignition coil restores consistent spark delivery, stabilizes idle, and can stop intermittent misfire codes without other drivetrain work. This guide shortlists the top ignition coils that fit the 4.7L V8 and focuses on the installation- and performance-related details that matter to owners. Below you will find the best-fit options we shortlisted, plus clear evaluation criteria and troubleshooting tips so you can pick the right coil for your repair or DIY tune-up.
Looking for other parts? See all Ram 1500 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | X4XZ UF270 Ignition Coil and 4503 Double Iridium Spark Plug Kit (8-pack) |  |
| Best Quality Built to a higher standard if you want something more solid | ENA Ignition Coil Pack Set (8) for 4.7L V8 |  |
| Best Value The sweet spot between price and what you get | DEAL Ignition Coil Pack Set for 4.7L V8 — Set of 8 |  |
| Best Budget The cheapest option that still gets the job done reliably | A-Premium Engine Ignition Coil Pack (Direct Replacement) |  |
| Highest Rated A top-rated pick with lots of positive feedback | NGK 8-Pack Ignition Coils for Dodge Ram 1500 4.7L V8 (2002–2007) |  |
| Most Popular A crowd favorite that many people choose with confidence | DRIVESTAR Ignition Coil Pack UF270 compatible with 4.7L V8 |  |
| Best Seller A high-volume bestseller chosen again and again | TRQ Ignition Coil Set — 8-Piece Direct-Fit Replacement |  |
X4XZ UF270 Ignition Coil and 4503 Double Iridium Spark Plug Kit (8-pack)
| Compatible engines | 4.7L V8 (listed Ram 1500 years/models) |
|---|---|
| Package contents | 8 ignition coils and 8 double iridium spark plugs |
| Installation type | Screw-In or Bolt-On |
| Connector gender | Male-to-Female |
| Automotive fit type | Vehicle Specific Fit |
This X4XZ kit bundles eight ignition coil packs with eight double-iridium spark plugs to replace worn units on 4.7L V8 Ram 1500 applications. The coils are built with thermoplastic connectors and an internal ferrite suppressor to reduce radio interference and resist heat-related cracking, while the double-iridium plugs are specified for long life and consistent spark delivery. Typical use is a full ignition-system refresh when you have misfires, rough idle, hard starting, or reduced fuel economy. Installation is straightforward for a competent DIYer or mechanic since the parts are vehicle-specific fit and intended to be screw-in or bolt-on replacements. The practical benefits are restored engine smoothness, better cold starts, and potentially improved fuel economy without having to source coils and plugs separately. Limitations are that the kit does not include installation instructions and longevity depends on proper installation and underlying engine condition; buyers should verify fitment for their exact model year and engine accessories before purchase.
Best for: Owners of Ram 1500 4.7L V8s seeking a balanced, cost-effective full ignition-system replacement to eliminate misfires and restore everyday drivability.
Less Ideal for: Drivers who want dealer-original branded parts or prefer professional installation where OEM-branded components are required for warranty or fleet service.
- Complete 8-coil and 8-plug kit for a full ignition system service on 4.7L V8s
- Double-iridium spark plugs offer longer service life and stable spark performance
- Coil design includes ferrite noise suppressor and heat-resistant connector for reliability
- Vehicle-specific fit reduces the chance of compatibility or fit issues when matched to listed years/models
- No printed installation manual included with the package
Verdict: A convenient, vehicle-specific eight-pack that gives Ram 1500 4.7L owners an affordable way to replace all coils and plugs at once and cure misfires.
ENA Ignition Coil Pack Set (8) for 4.7L V8
| Brand | ENA |
|---|---|
| Installation Type | Screw-In |
| Connector Gender | male |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer Part Number | ENAIC136108 |
These ENA ignition coil packs come as a full set of eight designed to replace factory coils on 4.7L V8 Chrysler, Dodge, Jeep, and compatible Mitsubishi applications. They install as screw-in, plug-and-play replacements and are built to match or improve on factory design for straightforward swapouts when diagnosing misfires or restoring performance. In real-world use they eliminate cylinder misfires, smooth out idle, and can help a vehicle regain lost power after old coils weaken; several buyers report quick fixes to P030x codes after replacing all coils. The set is vehicle-specific, so expect consistent fitment across the listed model years and fast installation for a DIYer or tech. Limitations to consider are that this is an aftermarket replacement rather than a branded factory coil and long-term durability will depend on operating conditions; the product listing notes a one-year limited warranty. For someone chasing reliable performance recovery without expensive dealer parts, this kit delivers practical value.
Best for: Buyers who need a performance-minded, cost-effective way to eliminate misfires and restore engine smoothness on a 4.7L V8 and who prioritize quick, complete replacement over sourcing individual OEM coils.
Less Ideal for: Shoppers seeking factory-branded parts with long multi-year warranties or those who prefer purchasing coils one at a time for selective replacement.
- Full set of eight coils for complete system replacement and consistent performance
- Designed to match or improve factory design for plug-and-play installation
- Common vehicle-specific fitment for 4.7L V8 Chrysler/Dodge/Jeep applications reduces fitment guesswork
- Multiple customer reports of resolving misfires and restoring smooth idle and power
- Aftermarket unit with limited one-year warranty rather than extended OEM coverage
- Long-term durability may vary with vehicle conditions and is less certain than factory-branded coils
Verdict: A complete, vehicle-specific eight-coil kit that restores lost power and cures misfires on 4.7L V8 engines without the premium of dealer parts.
DEAL Ignition Coil Pack Set for 4.7L V8 — Set of 8
| Fitment | 4.7L V8 vehicles (listed model years) |
|---|---|
| Piece Count | Set of 8 |
| Installation Type | Bolt-On |
| Manufacturer Part Number | RLJ-RC000030 |
This eight-piece ignition coil pack set replaces the factory coils on 4.7L V8 Dodge Rams, Dakotas, Durangos, Grand Cherokees, Commanders, Raiders and the 2007 Aspen. Each coil is a bolt-on, vehicle-specific fit engineered to match factory replacement specifications and uses German-engineered copper windings intended to improve spark efficiency and durability. In practice the set is used to eliminate misfires, restore smooth idle and improve throttle response and fuel economy compared with worn coils. Installation is straightforward for anyone comfortable swapping coils and plugs since the units are direct replacements and come in a complete set for all cylinders. Notable benefits are the full-vehicle coverage in one purchase and the manufacturer-stated testing and 2-year unlimited mileage guarantee. The main limitation is that these are replacement coils for a specific 4.7L V8 application only, so fitment must match the listed model years exactly and longer-term longevity will depend on vehicle conditions and maintenance.
Best for: Buyers who want a practical, no-frills way to replace all ignition coils on a 4.7L V8 vehicle at once to eliminate misfires and restore drivability while prioritizing value and ease of installation.
Less Ideal for: Those looking for performance-tuned coils, motorsport upgrades, or multi-vehicle fitment should consider other options.
- Complete set of eight coils provides full-vehicle replacement in one purchase
- Direct bolt-on fit engineered to match factory replacement specs for 4.7L V8 applications
- Copper-wound design aimed at improved ignition efficiency and smoother engine operation
- Includes manufacturer-backed 2-year unlimited mileage guarantee
- Fitment limited to specific 4.7L V8 model years and vehicle list
- Long-term durability depends on installation quality and engine condition rather than guaranteed lifespan
Verdict: A practical, full-set direct-fit replacement that gets a 4.7L V8 Ram and similar vehicles running smoothly again without extra complexity.
A-Premium Engine Ignition Coil Pack (Direct Replacement)
| Automotive Fit Type | Vehicle Specific Fit |
|---|---|
| Connector Gender | Male |
| Installation Type | Direct Replacement |
| OEM Equivalent Part Number | 56028138, UF-270, 6735300 |
This A-Premium ignition coil pack is a direct replacement designed to restore spark delivery on affected cylinders for a range of Dodge, Jeep, Ram and Mitsubishi models including Ram 1500 4.7L V8 applications. It installs like a factory-style unit and uses a male connector and vehicle-specific fit to match the factory harness, so installation is straightforward for home mechanics or techs replacing a single bad coil. The part lists multiple equivalent numbers, which helps confirm fitment, and customers report the coil smooths out rough running and resolves misfires when it is the failed component. Practical benefits are lower cost compared with dealer parts and easy swap-in installation with no special tools required. Limitations to note are that long-term durability can vary between aftermarket batches and one reviewer questioned measured resistance, so testing with a meter after purchase is wise if you need to verify specs before installation.
Best for: Buyers looking to fix a misfire or restore engine smoothness on a tight budget who prefer a plug-and-play replacement they can install themselves or have a mechanic swap quickly.
Less Ideal for: Those who prioritize extended warranty coverage or want a branded dealer coil with guaranteed factory testing should consider OEM or premium branded options instead.
- Direct replacement design for vehicle-specific fit and easy installation
- Lists multiple OEM-equivalent part numbers for straightforward cross-referencing
- Lower-cost alternative to factory dealer coil packs
- Uses standard male connector to match factory wiring harness
- Aftermarket quality can vary between production runs which may affect longevity
- Reported variation in measured coil resistance suggests occasional unit-to-unit inconsistency
Verdict: A cost-effective, vehicle-specific direct-replacement coil pack that restores spark and smooths running for budget-focused Ram 1500 4.7L V8 repairs.
NGK 8-Pack Ignition Coils for Dodge Ram 1500 4.7L V8 (2002–2007)
| Brand | NGK |
|---|---|
| Manufacturer Part Number | 4025077058 |
| Compatible Vehicles | Dodge Ram 1500 4.7L V8 2002-2007 |
This eight-piece NGK ignition coil pack is a direct-replacement kit intended to swap all coils on a Dodge Ram 1500 with the 4.7L V8 from 2002 through 2007. It supplies genuine NGK coils in factory-style packaging and includes the hardware needed for installation, so it is suitable for a full shop refresh or when multiple coils are due for replacement. In use the coils restore consistent spark delivery across cylinders, which helps eliminate misfires, rough idle, and poor throttle response caused by failing coils. The main practical benefit is replacing all eight at once to avoid repeat labor and to reset ignition reliability across the engine. Limitations to note are that this is a vehicle-specific kit so fitment must match the listed model and year range, and buyers should confirm connector and mounting details before purchase. Professional or experienced DIY installers will find the set saves time compared with buying individual coils over multiple visits.
Best for: Buyers who prioritize long-term ignition reliability and want to replace all coils in one service to avoid repeated labor and recurring misfires.
Less Ideal for: Someone who only needs a single coil replaced or who needs coils for a different engine or model year should consider single-part options or a correct-fit kit.
- Complete eight-coil set for replacing all cylinders at once
- Genuine NGK coils supplied in factory-style packaging
- Includes original hardware for straightforward installation
- Direct replacement fitment for Ram 1500 4.7L V8 (2002–2007) reduces fitment guesswork
- Fitment limited to specific Ram 1500 years and engine; not universal
- Requires verification of connector/mounting details before installation
Verdict: Replace all eight coils at once with a factory-quality NGK shop pack to restore reliable spark delivery on a Ram 1500 4.7L V8.
DRIVESTAR Ignition Coil Pack UF270 compatible with 4.7L V8
| Model Number | UF270 |
|---|---|
| Automotive Fit Type | Vehicle Specific Fit |
| Connector Gender | Female |
| Installation Type | Bolt-On |
The DRIVESTAR UF270 ignition coil pack is a direct-replacement coil designed for 4.7L V8 applications and similar V6 engines where this part number fits. It replaces factory coils with a bolt-on unit that uses high temperature tolerant wire and corrosion-resistant materials to maintain electrical resistance and deliver a strong spark to the plugs. Typical use is swapping a failed coil to cure misfires, rough idle, or poor acceleration; installation is straightforward for anyone comfortable removing the engine cover and unbolting the old coil. Buyers get practical benefits like a vehicle-specific fit, female connector compatibility, and commonly accepted OEM equivalent part numbers for easy cross-referencing. Trade-offs are that this is an aftermarket alternative rather than factory-brand and longevity can vary with engine conditions and aged spark plugs, so checking and replacing old plugs first improves coil life. For shoppers who prioritize reliable fitment and quick repair, this coil pack provides a cost-effective fix.
Best for: Buyers who want a reliable, vehicle-specific replacement to stop misfires and restore smooth running without paying dealer prices, and who value social proof from many positive user experiences.
Less Ideal for: Anyone seeking an OEM-branded coil with dealer-backed specifications or buyers who prefer to address underlying aged spark plug issues before replacing coils.
- Vehicle-specific bolt-on replacement for 4.7L V8 applications
- Built with high temperature tolerant wire and corrosion-resistant materials
- Matches common OEM equivalent part numbers for easy cross-reference
- Female connector and direct fit reduce installation time
- Aftermarket unit that may not match factory-brand longevity in all cases
Verdict: A cost-effective, vehicle-specific coil pack that reliably restores spark and cures misfires on 4.7L V8s without needing complex installation.
TRQ Ignition Coil Set — 8-Piece Direct-Fit Replacement
| Included Components | 8 Ignition Coils |
|---|---|
| Installation Type | Bolt-On or Screw-In |
| Manufacturer Warranty Description | 2 years |
| Automotive Fit Type | Vehicle Specific Fit |
This TRQ 8-piece ignition coil kit is a direct-fit replacement intended to restore ignition performance on 4.7L V8 Ram 1500 and other compatible trucks. Each coil is built with high-dielectric epoxy and reinforced bobbins to resist electrical breakdown, and the boots use rubber, silicone, or phenolic resin to protect against premature wear. The kit arrives as a complete set so you can replace all cylinders at once and avoid diagnosing intermittent misfires one at a time. Installation is bolt-on or screw-in and meant to match factory connections for a straightforward DIY swap. Real-world feedback shows many users get smooth idle, improved throttle response, and cleared engine codes after installation, while TRQ provides a two-year warranty and installation videos to guide repairs. Expect the typical aftermarket trade-offs: cost savings and broad availability versus occasional early failures reported by some buyers and performance that may differ slightly from long-lived factory coils. For a cautious buyer wanting a full replacement set to eliminate misfires without paying OEM prices, this kit offers a practical balance of fit, features, and support.
Best for: Buyers who prioritize restoring reliable ignition performance affordably and prefer a complete, do-it-yourself replacement with manufacturer guidance and warranty support.
Less Ideal for: Shoppers who only want single-coil replacements or strictly require original factory-brand parts for long-term durability should consider OEM options instead.
- Complete 8-coil kit replaces all cylinders at once to restore smooth running
- Direct-fit, vehicle-specific design requires no modifications for installation on listed 4.7L V8 trucks
- High-dielectric epoxy and reinforced bobbins aimed at longer service life
- Protective boot materials (rubber/silicone/phenolic) reduce premature boot wear
- Manufacturer provides installation videos and a two-year warranty for DIY support
- Some users report early failures on a minority of units compared with factory coils
- Aftermarket build and thermal behavior may differ from original factory parts
Verdict: A full, direct-fit 8-coil kit that restores engine smoothness on 4.7L V8 Ram trucks while keeping cost and DIY friendliness top of mind.
Choosing the Right Ram 1500 4.7L V8 Ignition Coil: Key Factors to Consider
Fitment And Connector Type
Correct fitment is the single most important purchase factor for the Ram 1500 4.7L V8. The coil must match the engine's mounting points, boss geometry, and electrical connector to avoid extra adapters or drilling. A direct-fit coil reduces installation time and the chance of wiring strain or poor electrical contact.
Connector type also affects long-term reliability. OEM-style pins and robust locking tabs ensure the coil stays fully engaged through vibration and thermal cycling. If the replacement uses a different connector shape, you should plan for wiring adapters or professional installation to prevent intermittent faults.
Electrical Specs And Performance
Pay attention to secondary voltage capability, primary coil resistance, and overall energy output. These specs determine how effectively the coil can generate a strong, consistent spark under varying load conditions, such as cold starts or heavy throttle. Incorrect resistance values can throw off the ignition module or PCM sensing and lead to misfires.
Coils with consistent electrical specifications across the set are preferable so each cylinder receives equivalent spark energy. Look for documented test values or factory-matching ratings to ensure predictable engine behavior.
Thermal And Mechanical Durability
The 4.7L V8 operates in a hot engine bay and is subject to vibration during normal driving and towing. Materials and sealing quality matter because heat and moisture intrusion accelerate coil failure. Reinforced housings, silicone high-voltage boots, and well-sealed potting compound help resist cracking and internal shorting.
Mechanical durability also covers the mounting flange and terminal strength. A cracked mounting boss or a sheared stud will create driveability issues and may require additional repairs. Prioritizing proven construction reduces the chance of premature replacement.
Compatibility With Ignition System And Spark Plugs
The coil must work with the Ram 1500's ignition control strategy and the spark plugs you plan to use. Mismatched coil-to-plug gaps or incompatible coil output can cause incomplete combustion or misfire codes. If you are changing plug type or gap, verify that the coil's output is appropriate for the new gap and plug heat range.
Additionally, coils that integrate with factory boots and seals maintain the original spark plug seating and protect against fouling. Consider whether the coil requires different plug torque or seating depth, as those variables affect long-term performance.
Ease Of Installation And Serviceability
Many owners replace coils as a DIY repair, so installation considerations matter. Coils that are easy to access and fit without removing ancillary components reduce the time and complexity of the job. Clear connector orientation and standardized mounting hardware speed up service.
Serviceability also includes whether replacement coils allow reuse of the OEM mounting bolts and whether electrical connectors can be disengaged and reattached without damage. Coils designed for straightforward swaps help avoid accidental damage to the harness or surrounding components.
Warranty And Expected Service Life
Warranty terms and expected life are practical proxies for quality. A longer warranty suggests the manufacturer expects the coil to resist degradation from heat, vibration, and electrical stress. Consider typical mileage expectations for coil failure on the 4.7L V8 and prioritize options that provide clear support in case of early defects.
Keep in mind that warranty handling may require proof of installation and that some warranties exclude failure from preexisting ignition or fuel system problems. Factoring in warranty coverage helps quantify long-term ownership risk.
Common Symptoms And Diagnostic Steps
Knowing the typical symptoms of failing ignition coils helps you decide whether a coil swap is the right fix. Common signs include rough idle, hesitation under acceleration, engine misfire codes, and difficulty starting after the vehicle has been parked. You may also notice reduced fuel economy or a check engine light with cylinder-specific misfire codes.
Start diagnostics by reading stored trouble codes and noting which cylinders are affected. Visual inspection can reveal cracked boots, corrosion at the terminal, or oil contamination. If a particular cylinder shows repeated misfires, the coil on that cylinder is a prime suspect.
Live data and a cylinder balance test can further isolate a weak coil. Observing ignition timing and fuel trim corrections under load helps confirm whether the issue is ignition-related rather than fuel delivery or compression. When in doubt, targeted electrical checks provide clearer confirmation.
- Symptoms to watch: rough idle, hesitation, misfire codes, hard starting
- Begin with OBD-II codes and visual inspection of boots and connectors
- Use cylinder balance or live data to isolate weak coils
How To Test An Ignition Coil Safely
Testing coils on the Ram 1500 4.7L V8 requires some basic tools but can prevent unnecessary replacements. Start by disconnecting the battery and inspecting the high-voltage boot and primary connector for damage. Measure primary resistance across the coil's low-voltage terminals with a digital multimeter and compare to the expected range for the coil type.
Secondary leakage and insulation issues are harder to test without proper equipment. A spark test with a safe grounding method can indicate whether the coil produces a strong spark, but take precautions to avoid shock and ensure no fuel vapors are present. For definitive results, a dedicated coil tester or swap test—installing a known-good coil into the suspect cylinder—gives the clearest indication of failure.
- Use a DMM to measure primary resistance and compare to specs
- Perform a controlled spark test only with safe grounding and fuel precautions
- Swap coils between cylinders to quickly identify a bad unit
DIY Replacement Tips For Ram 1500 Owners
Replacing coils on the 4.7L V8 is a common DIY task, but attention to detail improves outcomes. Work with the engine cool and battery disconnected when loosening connectors or mounting hardware. Label connectors if access is tight so each coil returns to its original cylinder when required by your repair approach.
Use proper torque on mounting bolts and reinstall boots to full seating depth to preserve sealing and electrical contact. Inspect the spark plug wells for oil or debris, and replace spark plugs if they show excessive wear. After installation, clear codes and perform a road test to verify the issue is resolved and no new codes appear.
- Disconnect battery and work on a cool engine
- Label connectors and keep mounting hardware organized
- Check spark plug wells and replace plugs if needed
When To Replace A Single Coil Versus The Whole Set
Deciding between replacing one coil or all coils depends on symptoms and mileage. If only one cylinder shows a persistent misfire and testing confirms a single failed coil, replacing that unit is reasonable. However, if the truck has high mileage or multiple coils show signs of wear, replacing the set reduces the chance of near-term repeat failures and keeps spark energy consistent across cylinders.
Also consider the cause of failure. If one coil failed due to contamination or electrical surge, the others may still be healthy. If failure is from age-related degradation, replacing all coils and the spark plugs at once can be a more reliable long-term solution.
- Replace one coil if failure is isolated and testing confirms it
- Replace the full set if multiple coils show wear or the vehicle has high mileage
- Assess root cause before deciding to avoid repeat repairs
Common Installation Pitfalls To Avoid
Avoid pulling on wiring harnesses or forcing connectors, which can damage terminals and lead to future electrical issues. Ensure connector locking tabs engage fully and that boots are not twisted or pinched during installation. Improper seating can create intermittent misfires that are hard to diagnose.
Do not reuse brittle boots or cracked seals; a new coil with degraded boot material will fail prematurely. Finally, be cautious with dielectric grease: a light dab on the boot lip helps seal and reduce corrosion, but excessive grease can attract dirt and interfere with seating.
- Do not force connectors or pull on harnesses
- Replace cracked boots and seals rather than reusing them
- Use dielectric grease sparingly to aid sealing
Still looking for the perfect fit?
Select your Ram 1500 configuration to see the most relevant Ignition Coils recommendations
How We Chose the Best Ram 1500 4.7L V8 Ignition Coil
We selected coils based on factors that directly affect reliability and fitment for the Ram 1500 4.7L V8. Core evaluation criteria included electrical output and resistance specs to ensure consistent spark under load, manufacturer fitment coverage matching the 4.7L V8 firing order and connector style, and build quality such as coil-pak sealing and high-temperature materials that stand up to under-hood heat. We also considered ease of installation for owners who do DIY swaps, including connector access and whether the coil integrates with the factory boot and spark plug interface. Durability indicators such as corrosion-resistant terminals and reinforced housings were weighted because the 4.7L engine runs hot and vibration-prone. We excluded coils that lacked definitive fitment data for the 4.7L V8 or that required additional hardware to install. Also omitted were units with unclear electrical specifications or poor long-term reliability feedback. Our picks prioritize direct-fit options that minimize modifications while offering documented electrical and mechanical compatibility with the Ram 1500 4.7L V8.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common symptoms of a failing ignition coil on the 4.7L V8?
Common symptoms include rough idle, engine hesitation under load, cylinder-specific misfire codes, difficulty starting, and reduced fuel economy. Visual signs like cracked boots or oil contamination can also indicate coil problems.
Can I test a coil at home without special equipment?
You can perform basic checks with a digital multimeter to measure primary resistance and do a controlled swap test between cylinders. For secondary insulation or precise energy output tests, a dedicated coil tester or professional diagnostics is more reliable.
Should I replace all coils at once or just the bad one?
It depends. Replace a single coil if testing confirms an isolated failure. If multiple coils show wear, the vehicle has high mileage, or you want to minimize repeat repairs, replacing the full set is often justified.
Will replacing coils fix a persistent misfire code?
Replacing a faulty coil can resolve a misfire if ignition is the root cause. However, misfires can also come from fuel delivery, spark plugs, or compression issues, so confirm the diagnosis before replacing coils.
How long do ignition coils typically last on the Ram 1500 4.7L V8?
Coil life varies with operating conditions, but many last tens of thousands of miles. Heat, oil contamination, and electrical stress shorten lifespan, so expect shorter life under heavy towing or if oil leaks into the plug wells.
Final Verdict
For the Ram 1500 4.7L V8, prioritize coils that provide correct fitment, documented electrical specs, and durable construction to resist heat and vibration. Balance the convenience of a direct-fit, easy-to-install unit against long-term durability and warranty support. If a single cylinder fails and testing confirms the coil as the cause, replacing only that coil is often sufficient; for higher-mileage trucks or multiple failing units, replacing the full set gives more consistent performance across all cylinders and reduces the chance of repeat repairs.
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