Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
If your Acura TSX is hesitating on start, running rough, or showing intermittent misfire codes, the ignition coil is a likely place to inspect. Choosing the right ignition coil matters because fitment and consistent electrical output directly affect starting reliability, idle smoothness, and emissions. This guide presents seven shortlisted ignition coils that meet common durability and performance expectations for the Acura TSX. We evaluated each option for fitment accuracy and output consistency, and the summary below will help you narrow choices based on your priorities.
Looking for other parts? See all Acura TSX parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | BDFHYK Ignition Coil Pack UF602 — Set of 4 |  |
| Most Popular A crowd favorite that many people choose with confidence | TRQ Ignition Coil Set, 4-Piece Direct-Fit |  |
| Best Quality Built to a higher standard if you want something more solid | X4XZ UF603 Ignition Coil and 97390 Double Iridium Spark Plug Kit |  |
| Best Budget The cheapest option that still gets the job done reliably | GPMMWPG UF602 Ignition Coil Pack, set of 4 |  |
| Most Sold A high-volume bestseller chosen again and again | ENA Ignition Coil Pack (Set of 6) for 3.5L/3.7L V6 Honda/Acura applications |  |
| Best Value for Money The sweet spot between price and what you get | KAX Ignition Coils and Double Iridium Spark Plug Set (4-Pack) — Compatible with Acura TSX 2009–2014 2.4L |  |
| Best Overall The best all-around choice for most situations | KAX Ignition Coil and Iridium Spark Plug Kit with Magnetic Socket |  |
1. BDFHYK Ignition Coil Pack UF602 — Set of 4
| Compatible OEM Part Numbers | UF602, C1662, 5C1719, E1102, 30520-R40-007 |
|---|---|
| Vehicle Fit Type | Vehicle Specific Fit |
| Connector Gender | Male |
| Installation Type | Screw-In or Bolt-On |
This BDFHYK coil pack set is a direct-fit replacement for UF602-equipped Acura TSX models and is intended to restore consistent spark and eliminate misfires. Installation is straightforward for a DIYer or tech familiar with the TSX ignition coils since the parts are vehicle-specific and bolt into the factory locations. The listing highlights use of PBT and PPO plastics and an original-style control chip for improved heat and corrosion resistance, which helps maintain ignition timing under typical driving conditions. In real-world use buyers report smoother idle, reduced crank time and modest fuel economy improvements after replacing all four coils. The main limitation is that these are aftermarket budget coils rather than OEM-brand units, so long-term durability may not match factory replacements under heavy duty or high-mileage use. Also confirm the UF602 OEM number before installing to ensure fitment. For routine repairs and restoring normal operation on an Acura TSX, these provide a cost-effective option.
Best for: Reliability-focused owners who prioritize restoring smooth, consistent operation on an Acura TSX without paying dealer prices and who prefer a straightforward repair they can install or have installed quickly.
Less Ideal for: Owners seeking guaranteed factory-brand longevity or those planning high-performance or extended high-mileage use should consider dealer or premium-brand replacements instead.
- Vehicle-specific direct replacement for UF602-equipped Acura TSX for straightforward fitment
- Set of four covers all cylinders to restore even performance when replacing coils as a group
- Built with heat- and corrosion-resistant PBT and PPO materials to help reliability under engine temperatures
- Includes original-style control chip design to match factory ignition behavior
- Aftermarket budget unit so long-term durability may be lower than factory-quality coils
- No explicit long-term lifespan data or manufacturer warranty details provided
Verdict A budget-friendly, vehicle-specific coil pack set that reliably restores spark and fixes misfires on Acura TSX models, but may not match OEM longevity.
2. TRQ Ignition Coil Set, 4-Piece Direct-Fit
| Kit contents | 4 Ignition Coils |
|---|---|
| Installation Type | Screw-In or Bolt-On |
| Connector Gender | Male |
| Automotive Fit Type | Vehicle Specific Fit |
This TRQ four-piece ignition coil set replaces worn coils on compatible Acura and Honda engines with direct-fit, pre-assembled units intended to match factory mounting and connectors. Typical use is swapping failed or aging coils during routine ignition service or when diagnosing misfires and rough idle on affected cylinders. Notable features include vehicle-specific design that requires no modifications, a molded rubber/silicone or phenolic shell to protect the boot, and pre-assembled connectors for faster installation. In practice the kit simplifies DIY work and shop repairs by reducing fitment guesswork and offering step-by-step installation resources. Buyers should expect improved engine smoothness and fewer misfire codes when coils are the root cause. Important limitations are mixed long-term reliability reports across different vehicle applications and occasional connector fitment differences that can require minor adjustment; this means replacement performance may vary by engine and driving conditions.
Best for: Convenience-driven buyers who prioritize an easy, fast replacement process and clear installation guidance when restoring engine smoothness.
Less Ideal for: Drivers seeking a premium lifetime solution for high-mileage or heavy-duty use should consider higher-end branded coils tested for extended longevity.
- Direct-fit, vehicle-specific design that removes the need for modifications
- Pre-assembled units speed up DIY or shop installation
- Protective rubber/silicone or phenolic boot to reduce premature wear
- Manufacturer provides installation videos and fitment guidance
- Some users report inconsistent long-term durability across different vehicles
- Occasional connector locking/tab fitment issues that may require minor adjustment
Verdict A convenient, direct-fit coil set that makes replacing faulty coils simple, but expect variable long-term durability depending on vehicle and use.
3. X4XZ UF603 Ignition Coil and 97390 Double Iridium Spark Plug Kit
| Compatible vehicles | Acura TSX 2010-2014 3.5L V6 |
|---|---|
| Package contents | Ignition Coil Packs x6, Double Iridium Spark Plug x6 |
| Installation type | Screw-In or Bolt-On |
| Connector gender | Female |
| Manufacturer | X4XZ |
This kit combines six UF603-style ignition coils with six 97390 double-iridium spark plugs to replace the factory ignition components in compatible V6 engines. For an Acura TSX owner looking to restore throttle response and eliminate misfires, the coils are designed as direct-fit replacements and the plugs use iridium tips for longer life and more consistent spark energy. Installation is straightforward for a DIYer with basic tools since the parts are vehicle-specific fit and plug-and-play in most cases. Practical benefits include improved cold starts, smoother idle, and the potential for steadier fuel combustion thanks to the iridium plugs and molded coil connectors that resist heat-related cracking. Limitations to note are that this is an aftermarket kit rather than a branded factory unit and the seller provides a one-year product service; long-term durability can vary compared with higher-end OEM or premium aftermarket nameplates. Also no printed installation manual is included, so novices should follow a service manual or online guide for the TSX.
Best for: Performance-oriented owners who want a single purchase to refresh all ignition components on their Acura TSX and prioritize improved throttle response and reliable spark delivery.
Less Ideal for: Buyers looking for factory-branded replacement parts or extended manufacturer-backed warranties should consider OEM or premium branded alternatives instead.
- Complete six-cylinder kit includes both ignition coils and double-iridium spark plugs for a full replacement
- Direct-fit vehicle-specific design intended for easy plug-and-play installation
- Iridium spark plugs offer longer service life and more consistent spark for improved combustion
- Coil connector and internal suppressor design aim to resist heat damage and reduce radio frequency interference
- Aftermarket part rather than a factory-branded replacement so long-term consistency may vary
- No printed installation manual included, requiring external instructions for novice installers
Verdict A convenient full six-cylinder coil-and-plug kit that can restore TSX V6 performance affordably, but remember it is an aftermarket option with limited long-term assurances.
4. GPMMWPG UF602 Ignition Coil Pack, set of 4
| Model | UF602 Ignition Coil Pack |
|---|---|
| Manufacturer Part Number | GPMM2123 |
| OEM Part Number | UF602 UF-602 C1662 5C1719 E1102 099700-147 099700147 099700148 30520RL5A01 |
| Position | Front Inner |
These GPMMWPG UF602 ignition coils are a direct replacement set intended for the Acura TSX 2.4L (model years listed). They install in place of the factory coils and are used to restore reliable spark delivery when original coils are failing. The pack is built to match factory fit and connector geometry so installation is straightforward for a DIYer or shop. The listing highlights upgraded copper windings and improved insulation aimed at stronger spark energy, which in practical use can reduce misfires and help the engine run smoother after replacement. Buyers should expect a cost-effective alternative to factory units that can revive throttle response and combustion consistency. Limitations are typical for budget aftermarket coils: long-term durability and exact performance parity with factory or premium branded coils are not guaranteed, and benefits like improved fuel economy or power will be noticeable mainly when replacing faulty originals rather than as an upgrade to a healthy system.
Best for: Budget-conscious owners looking for an affordable, straightforward replacement to restore reliable ignition on an Acura TSX 2.4L and who prioritize cost and fitment over a premium upgrade.
Less Ideal for: Drivers seeking a long-term performance upgrade or guaranteed longevity beyond factory-level service should consider higher-end branded coils instead.
- Direct-fit design for easy replacement on Acura TSX 2.4L engines
- Set of four covers all cylinders for a complete service
- Claims upgraded copper windings and insulation for stronger spark energy
- Compatible connector and positioning to match factory installation
- Long-term durability versus premium branded coils is uncertain
- Performance gains are limited if the original coils were not failing
Verdict A wallet-friendly, direct-fit replacement for Acura TSX 2.4L owners who need to replace failing coils but not a premium longevity or performance upgrade.
5. ENA Ignition Coil Pack (Set of 6) for 3.5L/3.7L V6 Honda/Acura applications
| Vehicle Service Type | Car |
|---|---|
| Installation Type | Bolt-On |
| Mounting Location | Valve Cover |
| Voltage | 12V |
| Package Contents | Set of 6 Coil Packs |
This ENA set supplies six plug-and-play ignition coils intended to replace factory coils on compatible 3.5L and 3.7L V6 engines. For Acura TSX owners with the V6 3.5L who need a full-bank replacement, the kit is installed on the valve cover and uses the factory electrical connector for a straightforward bolt-on swap. The product emphasizes consistent spark output and a 12V design, which in practice restores smooth idle and corrects misfire-related drivability problems when paired with good spark plugs. Users report fitment that matches factory parts and simple installation for a backyard mechanic. The pack offers strong value compared with individual dealer coils, but a minority of buyers have reported occasional bad units out of the set, so checking each coil before installation is prudent. The kit comes with a 12-month warranty but does not include spark plugs or diagnostic guidance, so budget for those if you are refreshing the ignition system fully.
Best for: Risk-averse mainstream buyers who prefer a budget-friendly, direct-replacement kit that restores reliable day-to-day drivability without performance modifications.
Less Ideal for: Drivers seeking performance-tuned coils, long-term fleet service parts, or those who want a complete ignition service kit with spark plugs and extended warranty included should look elsewhere.
- Full set of six coils covers the entire V6 bank for one installation event
- Plug-and-play, bolt-on design uses factory connector and mounting location for easy installation
- Consistent spark output aimed to resolve misfires and improve idle smoothness
- Much lower cost than buying individual dealer coils, good value for a full replacement
- Some buyers report occasional defective units within a pack requiring replacement
- No spark plugs included so full ignition refresh requires extra parts or labor
- Manufacturer warranty is limited to 12 months which may be shorter than some alternatives
Verdict A budget-friendly full-bank coil pack kit that restores reliable ignition on V6 TSX engines but inspect units on arrival and plan to buy spark plugs separately.
6. KAX Ignition Coils and Double Iridium Spark Plug Set (4-Pack) — Compatible with Acura TSX 2009–2014 2.4L
| Vehicle fitment | Acura TSX 2009–2014 2.4L |
|---|---|
| Installation type | Bolt-On |
| Includes | 4 ignition coils + 4 double iridium spark plugs |
| Position | Front Inside |
This kit pairs four KAX ignition coils with matching double iridium spark plugs to replace the front inside coils on Acura TSX 2.4L engines. Installation is straightforward for most mechanically inclined owners since the coils are bolt-on and intended to match factory fitment for a plug-and-play swap. The listing emphasizes fast ignition response and high-voltage output for smoother idle and reduced hesitation, and customer reports commonly note cleared misfires and immediate improvement after replacement. The included plugs are double iridium, which typically offer longer life and stable performance versus basic copper plugs, but some users recommend checking and adjusting the gap before installation. The product is presented as a budget-friendly alternative to dealer parts that performs like a factory replacement in day-to-day driving. Limitations include a service-life claim measured in thousands rather than tens of thousands of miles and occasional reports that packaging and component finish feel utilitarian rather than premium. Expect reliable mid-term service at a better value than brand-name dealer parts, with basic prep and gap checking advised for optimal results.
Best for: Practical optimizers who prioritize cost-effectiveness and reliable, DIY-friendly maintenance for their Acura TSX 2.4L and want a matched coil-and-plug kit to restore engine smoothness without paying dealer prices.
Less Ideal for: Buyers seeking longest-possible warranty coverage or the highest-end, dealer-grade parts for extended longevity should consider OEM replacements instead.
- Vehicle-specific direct-fit design for Acura TSX 2009–2014 2.4L for straightforward replacement
- Includes both ignition coils and double iridium spark plugs for a matched service interval
- Bolt-on installation reduces tools and labor compared with more invasive repairs
- Higher-voltage output and fast ignition response aimed at smoother idle and reduced hesitation
- Service life claim is modest and shorter than premium OEM replacements
- Some users report basic packaging and a less-refined finish compared with factory parts
Verdict A budget-focused, direct-fit coil-and-plug kit that restores smooth running on Acura TSX 2.4L models while offering good immediate value compared with dealer parts.
7. KAX Ignition Coil and Iridium Spark Plug Kit with Magnetic Socket
| Compatible engine | 3.5L (TSX) |
|---|---|
| Drive size (socket) | 3/8" |
| Installation type | Bolt-On |
| Position | Front Inside |
This KAX kit supplies replacement ignition coils and iridium spark plugs tailored for the Acura TSX 3.5L, and it ships with a magnetic 3/8" drive socket to speed plug changes. In use it functions as a direct-fit replacement: coils are stated to provide fast firing and RF interference protection while the plugs offer a long service life. The magnetic socket and anti-slip hex design make removing and fitting plugs simpler and reduce the chance of dropping a plug down the bore, which is helpful when working in tight engine bays. Buyers will appreciate that the coils are described as bolt-on vehicle-specific fit for quick swapouts and that installation is straightforward for a DIYer or tech. Limitations to expect are the usual risks of aftermarket ignition parts: fit and long-term durability can vary from factory-quality units and some users may prefer OEM-branded plugs. Also the listing bundles parts for multiple engines and model years so confirm the TSX 3.5L compatibility before installation.
Best for: A balanced all-round buyer who wants a complete, do-it-yourself-friendly replacement for their Acura TSX 3.5L and values convenience and a straightforward install.
Less Ideal for: Drivers who prioritize guaranteed factory-brand parts or those who need verified long-term OEM-equivalent durability should consider sourcing OEM coils and plugs instead.
- Vehicle-specific fit for Acura TSX 3.5L for a straightforward replacement
- Includes a magnetic 3/8" drive spark plug socket to hold plugs during install
- Claims RF interference protection and fast ignition response for smoother running
- Iridium spark plugs intended for longer service life compared with basic plugs
- Aftermarket parts can differ from factory-quality components in long-term durability
- Plug brand in the kit may not match OEM-branded plugs some buyers prefer
Verdict A practical, complete coil-and-plug kit with a helpful magnetic socket that makes replacing ignition components on an Acura TSX 3.5L easier, though buyers seeking strict factory-brand parity may prefer OEM parts.
Choosing the Right Acura TSX Ignition Coil: Key Factors to Consider
Fitment and Connector Type
Correct physical fit and matching connector type are essential because coils that do not align with the TSX mounting points or wiring harness can cause poor contacts, vibration issues, and premature failure. Ensure the coil’s mounting bracket, bolt pattern, and electrical plug match the vehicle to avoid modifications that can introduce reliability problems.
A matching connector reduces the risk of loose pins, corrosion, and intermittent faults. Verifying fitment also helps keep installation straightforward and minimizes time spent on adjustments or additional wiring adapters.
Electrical Output and Resistance
Electrical output characteristics, including primary and secondary resistance and peak voltage capability, determine whether a coil can deliver the spark energy required under various engine loads. Coils with inconsistent or out-of-spec resistance can cause weak sparks, misfires, or increased fuel consumption.
Look for documented electrical specs or test data. Matching the coil’s output profile to the TSX ignition requirements helps maintain combustion stability across idle, cruising, and high-load conditions.
Durability and Environmental Sealing
Ignition coils sit in a harsh under-hood environment where heat, vibration, and moisture are constant threats. Materials and sealing quality matter because poor sealing can allow moisture intrusion that leads to arcing and coil failure. Robust housings and high-temperature materials resist cracking and insulation breakdown over time.
Consider coils with enhanced moisture barriers, thicker insulation, and vibration-resistant designs to extend service life and reduce the likelihood of intermittent faults caused by environmental stressors.
Compatibility With Ignition System Controls
Modern ignition systems rely on engine control signals to time and shape the spark. A replacement coil should be electrically compatible with the vehicle’s control unit so it responds correctly to dwell and timing commands. Mismatched impedance or slow response can affect timing accuracy and trigger diagnostic trouble codes.
Verify manufacturers provide electrical compatibility information or that the coil is specified for the Acura TSX ignition system to avoid drivability issues.
Ease of Installation and Serviceability
How easy a coil is to install affects both DIYers and technicians. Coils designed to drop into existing mounts without modification reduce install time and the risk of damage to adjacent components. Clear access to bolts and connectors and the use of standard fasteners simplify replacement.
Serviceability also includes whether coils are simple to test in-place and whether replacement requires additional parts like boots or seals. Choosing a unit that is straightforward to access and replace reduces labor and potential for installation errors.
Warranty and Replacement Support
Warranty terms and manufacturer support provide a safety net if a coil fails prematurely. A clear warranty indicates the maker’s confidence in materials and manufacturing. Warranty coverage can vary in duration and conditions, so understanding what is covered helps set expectations for long-term ownership.
Also consider availability of technical support and documented installation guidance, which can be useful if you encounter fitment questions or need to troubleshoot installation issues.
FAQ
What are common symptoms of a failing ignition coil in an Acura TSX?
Common signs include engine misfires, rough idle, hard starting, reduced fuel economy, and an illuminated check engine light. You may notice intermittent power loss under acceleration or a persistent misfire code from the engine control module. Symptoms often vary with load and temperature.
Can I test an ignition coil myself before replacing it?
Yes, you can perform basic checks such as measuring primary and secondary resistance with a multimeter and inspecting for obvious cracks or corrosion. Load and output tests require specific tools and procedures, so if readings are borderline or you lack test gear, consult a professional for more definitive diagnostics.
Is it better to replace all coils at once or just the failed one?
It often depends on the age and condition of the vehicle. Replacing only the failed coil can be cost effective if others show healthy performance and similar service life, but replacing multiple coils can reduce the chance of near-term failures and save time later. Evaluate condition, mileage, and maintenance history when deciding.
What should I check before installing a new coil in my TSX?
Confirm correct fitment and connector compatibility, inspect spark plug condition and gap, and ensure mounting surfaces and harness connectors are clean and undamaged. Also verify that any rubber boots or seals are properly seated to prevent moisture ingress and arcing after installation.
How long do ignition coils typically last in a vehicle like the Acura TSX?
Coil life varies based on operating conditions, maintenance, and environmental exposure. Many last well beyond 60,000 miles, while some may fail earlier due to heat, moisture, or electrical stress. Regular inspection and addressing spark plug wear can help prolong coil life.
What troubleshooting steps help confirm an ignition coil issue?
Start with scanning for diagnostic trouble codes and visually inspecting coils and boots for damage. Measure coil resistances and compare them to the expected ranges, swap coils between cylinders if practical to see if a misfire follows the coil, and check related components like spark plugs and wiring for faults.
How We Chose the Best Acura TSX Ignition Coil
To assemble this list we applied a focused set of editorial filters that reflect real-world needs for Acura TSX owners. Primary criteria included precise OEM-equivalent fitment to the TSX ignition system and verified electrical output specifications such as secondary voltage and resistance ranges. We also prioritized build quality factors like insulation materials and connector robustness that affect long-term reliability under engine-heat conditions. Durability indicators such as coil housing design and moisture resistance were considered to reduce failure risk in wet or high-humidity environments. Installation practicality was another factor, including whether the coil uses standard mounts and plug-style connectors that match stock harnesses. We excluded any options lacking clear fitment data for the Acura TSX or without measured electrical specs, and we omitted generic, unverified units with no documented testing. The result is a concise set of top candidates that meet fitment, electrical performance, durability, and installation expectations for TSX owners.
Our full evaluation process is outlined in our review methodology.
Conclusion
Selecting the right ignition coil for an Acura TSX comes down to matching fitment and electrical characteristics to the vehicle’s ignition system while considering durability and installation ease. Prioritize coils with documented resistance and output specs, solid environmental sealing, and straightforward compatibility with the TSX harness.Balance the desire for long-term reliability against installation practicality and available support. Paying attention to these factors will reduce the likelihood of repeat failures and help restore consistent starting and combustion performance.
Explore More:
- Check out all Acura TSX parts & accessories
- Explore Ignition Coils Maintenance & Repair Guides
- Explore Engine
- Browse all Auto Parts
