Finding the best ignition coils for Acura TL is not simply a matter of choosing the most expensive coil pack or the product with the biggest compatibility list. The Acura TL was produced with several different V6 engines, and the correct ignition coil depends heavily on the model year, engine displacement, and original coil design.
A weak or failing ignition coil can make an otherwise healthy TL feel surprisingly rough. Typical symptoms include a shaky idle, hesitation during acceleration, intermittent misfires, reduced fuel economy, hard starting, loss of power, and a flashing or steady check-engine light. Because the TL uses a coil-on-plug ignition system, one failing coil can affect a single cylinder while the remaining cylinders continue operating normally.
For owners of 1999–2008 Acura TL models, my first choice is the ENA Set of 6 UF242 Ignition Coil Pack. It offers a complete six-coil replacement set, broad compatibility with the 3.2L TL and applicable 3.5L Type-S models, and strong buyer feedback relative to many aftermarket alternatives.
Owners of a 2009–2014 Acura TL who prioritize OE-style quality should look closely at the Astemo/Hitachi IGC0056 Ignition Coil. It is designed for the later TL ignition system and is an especially appealing choice when replacing one or several individual coils rather than installing a budget six-pack.
For older TL owners who prefer an established OE-level automotive supplier, the DENSO 673-2310 Direct Ignition Coil is another solid choice. It fits applicable 1999–2008 Acura TL applications and is particularly attractive when you want to replace a confirmed failed coil individually instead of changing the entire set.
Important: Always confirm the exact year, engine, connector, and OE part number before ordering. The 1999–2008 and 2009–2014 Acura TL generations do not use the same ignition-coil family.
3 Best Ignition Coils for Acura TL for Smooth Performance
| Image | Product Name | Check Price |
|---|---|---|
Best Choice | ENA Set of 6 UF242 Ignition Coil Pack | Check Price |
Second Best | Astemo/Hitachi IGC0056 Ignition Coil | Check Price |
Third Choice | DENSO 673-2310 Direct Ignition Coil | Check Price |
1. ENA Set of 6 UF242 Ignition Coil Pack
Key Features
- Complete set of six ignition coils
- Designed for coil-on-plug V6 ignition systems
- Compatible with applicable 1999–2008 Acura TL 3.2L models
- Also fits applicable 2007–2008 TL 3.5L applications
- Replaces common UF242-family coil numbers
- Bolt-on installation
- Useful for replacing an aging complete coil set
- Strong combination of price and widespread owner feedback
The ENA UF242 set earns the top position because it addresses one of the biggest problems faced by owners of older Acura TLs: replacing multiple aging coils without spending heavily on six individual premium units.
Compatibility information for this set includes the 1999–2008 Acura TL 3.2L V6 as well as applicable 2007–2008 TL 3.5L V6 configurations. Common interchange numbers include UF242 and several related OE references.
That makes it particularly relevant to second- and third-generation TL owners dealing with high mileage. Even if only one coil has triggered a misfire code, an older vehicle may have several original coils that have experienced roughly the same number of heat cycles and operating hours.
Replacing all six at the same time can therefore make sense when the existing coils are original, the vehicle has considerable mileage, or several cylinders have experienced intermittent ignition problems.
One of the advantages of the ENA kit is simplicity. You receive six matching coils rather than combining several different brands or generations of replacement parts. Consistent coils across all cylinders can also simplify future troubleshooting because you know when the entire set was installed.
Installation is relatively straightforward for someone comfortable with basic engine maintenance. The ignition coils sit directly above the spark plugs, and they are designed as bolt-on replacements. However, access to rear-bank cylinders can be tighter than access to the front cylinders, so patience is important.
The strongest argument for choosing ENA is value rather than claiming that it automatically outperforms every OE-grade alternative. Premium individual coils from established OE suppliers can offer excellent long-term reliability, but purchasing six of them can become expensive.
For a daily-driven older Acura TL where the objective is to eliminate misfires and refresh the ignition system without creating an oversized repair bill, this six-pack occupies an attractive middle ground.
Owner feedback also shows why proper diagnosis matters. Many users report improvement after replacing aging coils, while aftermarket ignition components can occasionally produce premature failures or inconsistent results. The sensible approach is to verify spark-plug condition, wiring, connectors, and diagnostic trouble codes instead of assuming every rough-running condition originates with the coils.
What I Like
The biggest advantage is the complete six-coil package. On a high-mileage TL, replacing every old coil simultaneously can be more practical than waiting for each unit to fail independently.
I also like the wide relevant fitment range. The UF242 family covers many older Acura TL applications, making this a convenient option for owners of the 3.2L V6 and certain 3.5L Type-S models.
Price-to-coverage is another strong point. Getting six coils in one package can substantially reduce the cost of a full ignition refresh compared with purchasing six premium individual coils.
The straightforward bolt-on design is useful for DIY maintenance as well. No performance modification should be required when the correct fitment is selected.
What I Do Not Like
The biggest compromise is that this is a value-focused aftermarket set rather than the premium OE-style choice I would prioritize when maximum long-term service life is the only concern.
Quality consistency can also matter with inexpensive complete sets. I would inspect every coil, boot, terminal, and connector carefully before installation.
It is also easy to order the wrong coil based only on the words “Acura TL.” This UF242 set should not be treated as the correct choice for every TL ever manufactured.
Verdict
The ENA UF242 six-pack is my best overall choice for most 1999–2008 Acura TL owners who want to replace a complete aging ignition-coil set at a reasonable cost.
It makes the most sense for a stock or near-stock daily driver where dependable operation, convenient installation, and overall value matter more than paying a premium for six individual OE-oriented coils.
If your TL is a 2009 or newer model, however, move to a later-generation coil such as the Astemo/Hitachi option below rather than assuming the UF242 design will fit.
2. Astemo/Hitachi IGC0056 Ignition Coil
Key Features
- Designed for later Honda/Acura V6 applications
- Fits applicable 2009–2014 Acura TL models
- OE-equivalent references include 30520-R70-A01 and related numbers
- Vehicle-specific bolt-on fit
- Sold individually
- Strong option for targeted coil replacement
- Suitable for 3.5L and 3.7L TL applications when listed for the exact vehicle
- OE-oriented construction
The Astemo/Hitachi IGC0056 is the option I would consider first for many 2009–2014 Acura TL owners.
That distinction is important because fourth-generation TL models use a different ignition-coil family from earlier cars. Product compatibility information specifically lists the IGC0056 for 2009–2014 Acura TL applications and references OE number 30520-R70-A01.
For owners of a 3.5L front-wheel-drive TL or 3.7L SH-AWD model, using a coil designed for the later engine family is much more important than simply purchasing a product marketed broadly toward Acura vehicles.
What makes the IGC0056 especially appealing is its OE-oriented approach. When diagnosing a single-cylinder misfire on an otherwise healthy engine, installing one quality replacement coil can be more sensible than discarding five functioning factory coils just to install a complete inexpensive aftermarket set.
Suppose the engine shows a P0304 misfire code and testing confirms that cylinder four has a failing coil. Moving the suspected coil to another cylinder and seeing the misfire follow it is one common diagnostic technique. Once the fault is confirmed, replacing that individual coil with a quality unit is a logical repair.
This strategy is particularly attractive when your remaining factory coils are still operating properly.
The IGC0056 also receives favorable long-term feedback from owners using the same coil architecture across compatible Honda and Acura V6 applications. Current product information lists hundreds of customer ratings, while owner reports include examples of high accumulated mileage after replacement.
That does not guarantee identical service life in every TL. Heat, plug condition, electrical-system health, driving conditions, and installation quality all influence ignition-coil lifespan.
Still, when I am choosing between an unknown inexpensive single coil and an established OE-oriented supplier for a newer TL, I would normally spend the difference on the better-known component.
What I Like
The greatest advantage is generation-correct compatibility for the 2009–2014 Acura TL.
I also prefer its individual-coil format when only one cylinder has a confirmed failure. Replacing a single faulty component prevents unnecessary removal of functioning original coils.
The OE-oriented design is another reason this coil stands out. Acura’s J-series V6 engines are generally very smooth when the ignition system is healthy, and maintaining consistent ignition behavior is more valuable than chasing exaggerated aftermarket performance claims.
I also appreciate that the relevant OE reference numbers are clearly documented, which makes fitment verification easier.
What I Do Not Like
Buying six individual units can become expensive if you want to refresh the entire ignition system.
That means this product is not automatically the economical choice for someone with an older high-mileage car experiencing failures across several cylinders.
Owners must also confirm the precise engine and year rather than relying on appearance alone. Several Honda/Acura coils look similar but have different electrical and physical specifications.
Verdict
For a 2009–2014 Acura TL, the Astemo/Hitachi IGC0056 is my favorite option when quality and OE-style replacement are higher priorities than getting six coils for the lowest possible price.
It is especially well suited to diagnosing and repairing one or two confirmed coil failures while leaving healthy original components in place.
For a well-maintained fourth-generation TL that you intend to keep for years, this is the type of ignition component I would feel comfortable installing.
3. DENSO 673-2310 Direct Ignition Coil
Key Features
- Direct ignition coil
- Fits applicable 1999–2008 Acura TL models
- Coil-on-plug design
- 12-volt specification
- Cross-references UF242 and related OE numbers
- Sold individually
- Bolt-on replacement
- Established ignition-component manufacturer
- Good option for replacing an isolated failed coil
The DENSO 673-2310 is another compelling choice for owners of older Acura TL models who prefer to replace only the failed coil.
Fitment information lists the 673-2310 for the 1999–2008 Acura TL, with additional references to OE part numbers and the UF242 family.
DENSO has extensive experience with ignition components, and that matters because an ignition coil operates in an unusually demanding environment. It must repeatedly transform the vehicle’s low-voltage electrical supply into the high voltage required to fire a spark plug while being exposed to engine heat, vibration, moisture, and thousands of thermal cycles.
This is why I would not judge ignition coils exclusively on their initial purchase price.
A cheap coil that works perfectly for three months but fails prematurely can be more frustrating and ultimately more expensive than installing a quality part once.
For a 2004–2008 TL, access to the front bank of cylinders is relatively simple. Rear-bank work can be more awkward because of the engine layout, making repeat repairs undesirable. A dependable coil is therefore particularly valuable when replacing a component in a less convenient location.
Another good use case is a TL with mostly healthy factory coils. If five original coils remain stable and testing identifies one defective unit, replacing that one unit with a reputable individual coil is entirely reasonable.
You do not automatically need to replace all six coils every time one fails.
A full-set replacement is more attractive when several coils are deteriorating, the entire set is extremely old, or you want to establish a common maintenance baseline.
What I Like
I like the DENSO 673-2310 primarily because it gives older TL owners a quality-focused individual replacement option.
The documented 1999–2008 TL fitment also makes it directly relevant to the most common older TL generations.
Its UF242-family interchange information makes part-number verification easier when comparing the replacement with the original coil.
Another advantage is flexibility. You can replace one confirmed failed coil today without committing to a full six-coil purchase.
What I Do Not Like
A complete set of six can cost considerably more than a budget aftermarket six-pack.
The product is therefore less attractive for a high-mileage TL where several coils are already producing intermittent problems.
The fact that it is a recognized automotive brand should also not replace proper fitment checking. Always compare year, engine, original part number, connector design, and application data before installation.
Verdict
The DENSO 673-2310 is a strong option for 1999–2008 Acura TL owners who want an OE-oriented individual replacement coil.
I would choose it over a complete inexpensive set when only one coil has definitively failed and the remaining factory coils continue to operate correctly.
It may cost more per cylinder, but avoiding repeated ignition repairs can justify the difference for owners who prioritize long-term reliability.
Best Ignition Coils for Acura TL Comparison
| Product | Best For | Typical TL Fitment | Package | Main Advantage |
| ENA UF242 Ignition Coil Pack | Best overall value | 1999–2008 TL | Set of 6 | Complete replacement at a reasonable cost |
| Astemo/Hitachi IGC0056 | Best for newer TL models | 2009–2014 TL | Single coil | OE-style design and strong durability reputation |
| DENSO 673-2310 | Best premium option for older TL | 1999–2008 TL | Single coil | OE-oriented engineering and precise fit |
Understanding Acura TL Ignition Coil Fitment
The most important buying rule for an Acura TL is simple:
Do not buy ignition coils based only on the vehicle name.
The TL went through several generations and engine configurations.
1999–2003 Acura TL
These models primarily use a 3.2L V6. Applicable versions commonly use the UF242-style coil family.
The 2002–2003 TL Type-S also uses a higher-output 3.2L V6, so exact fitment should still be confirmed by year and engine.
2004–2006 Acura TL
These third-generation models use the 3.2L J-series V6 and are among the common applications for UF242-type replacement coils.
Both complete six-packs and individual replacement coils are readily available for these vehicles.
2007–2008 Acura TL
This period requires additional attention because the regular TL uses a 3.2L engine while the TL Type-S uses a 3.5L V6.
The ENA UF242 listing specifically includes applicable 2007–2008 3.5L TL configurations in addition to the 3.2L cars.
Even so, checking the original part number before ordering remains the safest approach.
2009–2014 Acura TL
The fourth-generation TL moved to later 3.5L and 3.7L V6 configurations.
These cars should not automatically receive the same UF242 coils used in earlier TL models.
The Astemo/Hitachi IGC0056 is specifically listed for 2009–2014 Acura TL applications.
Signs Your Acura TL Ignition Coils May Be Failing
Engine Misfire
A misfire is one of the most recognizable ignition-coil symptoms.
You may notice the engine stumbling during acceleration, shaking at idle, or briefly losing power.
Misfire-related diagnostic codes commonly fall within the P0300–P0306 range.
A cylinder-specific code does not automatically prove the coil is defective, however. Spark plugs, injectors, compression problems, wiring, vacuum leaks, and other faults can produce similar symptoms.
Rough Idle
A healthy Acura V6 should idle relatively smoothly.
If the steering wheel, seat, or vehicle body suddenly begins vibrating noticeably at a stop, one cylinder may not be contributing properly.
Weak ignition is one possible cause.
Hesitation Under Acceleration
Ignition coils are frequently stressed most heavily when cylinder pressure rises under load.
A marginal coil may therefore seem acceptable at idle but begin misfiring when you accelerate onto a highway or climb a hill.
Check Engine Light
A failing ignition system may trigger the check-engine light.
A flashing check-engine light deserves immediate attention because an active severe misfire can send unburned fuel into the catalytic converter and cause expensive damage.
Reduced Fuel Economy
Incomplete combustion can reduce efficiency.
However, declining MPG alone is far too broad a symptom to diagnose an ignition coil. Tire pressure, oxygen sensors, fuel trims, driving conditions, brake drag, and many other variables can influence consumption.
Hard Starting
A weak spark can contribute to difficult starting, especially when several ignition components are deteriorating.
Before replacing coils, battery voltage, fuel delivery, spark plugs, and other starting-system factors should also be evaluated.
Should You Replace One Acura TL Ignition Coil or All Six?
There is no universal rule.
If your TL is relatively well maintained, the other five coils are functioning correctly, and diagnostic testing confirms one isolated failure, replacing only the failed coil is perfectly reasonable.
That is where products such as the Astemo/Hitachi IGC0056 and DENSO 673-2310 make sense.
Replacing all six becomes more appealing when:
- The coils are original and very old
- The vehicle has high mileage
- Two or more coils have recently failed
- Several cylinders intermittently misfire
- You want to establish a fresh maintenance baseline
- You are already replacing all six spark plugs
- A quality complete set is available within your budget
A complete replacement does not automatically mean the engine will gain horsepower. Healthy original coils already provide sufficient spark energy for a stock engine.
The real objective is restoring consistent combustion.
Ignition Coils vs. Spark Plugs: Which One Is Causing the Misfire?
One of the most common repair mistakes is replacing ignition coils without inspecting the spark plugs.
A worn plug can demand more voltage from the coil because the electrode gap has increased over time. That additional electrical stress can contribute to coil failure.
Meanwhile, a damaged or contaminated plug can produce a misfire that looks almost identical to a bad coil.
When diagnosing your Acura TL, inspect both.
Look for:
- Excessive plug gap
- Oil contamination
- Cracked ceramic
- Heavy deposits
- Damaged ignition-coil boots
- Corrosion inside connectors
- Moisture in the spark-plug tube
- Carbon tracking
If your plugs are already due for replacement, servicing them while the coils are removed can save labor.
How to Choose the Best Ignition Coils for Acura TL
Confirm the Model Year First
This is the most important step.
A coil intended for a 2006 TL may not be appropriate for a 2012 TL even though both vehicles have six-cylinder engines.
Verify Engine Size
Check whether your vehicle has the 3.2L, 3.5L, or 3.7L V6.
This becomes particularly important with Type-S and SH-AWD configurations.
Compare the OE Part Number
OE-number matching is one of the strongest ways to narrow down compatibility.
For older TL models, UF242 and related references appear frequently.
Later TL applications use different numbers such as 30520-R70-A01-family references.
Decide Between Individual Coils and a Complete Set
Choose individual premium coils when only one or two have failed.
Consider a complete kit when the entire original set is aging or multiple failures have occurred.
Prioritize Heat Resistance
Ignition coils operate directly on the engine, where temperatures cycle dramatically.
Quality insulation, winding construction, boot material, and internal electronics all influence long-term reliability.
Avoid Performance Hype
A replacement coil normally does not create large horsepower gains in a stock Acura TL.
If your existing ignition system is weak, new coils may restore lost throttle response and smoothness. That can feel like a performance upgrade, but it is primarily restoring the engine to proper operation.
Pay Attention to the Spark Plugs
New ignition coils installed over severely worn plugs may experience unnecessary stress.
A proper ignition refresh considers both components.
How Long Do Acura TL Ignition Coils Last?
There is no fixed mileage at which every ignition coil fails.
Some factory coils can last well beyond 100,000 miles, while others may fail considerably earlier.
Heat is a major factor. Ignition coils live through thousands of hot-and-cold cycles during the vehicle’s life.
Spark-plug condition also matters. Excessive plug gaps can increase the voltage demand placed on the coil.
Electrical issues, oil or moisture contamination, manufacturing quality, and driving conditions can further affect lifespan.
Instead of automatically changing ignition coils at a specific mileage, monitor engine behavior and perform proper diagnosis when symptoms occur.
Can Bad Ignition Coils Damage an Acura TL?
They can indirectly contribute to more expensive problems if a severe misfire is ignored.
When a cylinder does not burn its air-fuel mixture properly, unburned fuel may enter the exhaust.
The catalytic converter can overheat as it attempts to process that fuel.
A relatively inexpensive ignition problem can therefore develop into a much larger repair bill.
If the check-engine light begins flashing and the engine is clearly misfiring, avoid continuing to drive aggressively.
Acura TL Ignition Coil Replacement Tips
Allow the engine to cool before beginning.
Disconnect electrical connectors carefully because plastic connectors become brittle with age and repeated exposure to heat.
Remove the coil retaining bolt and pull the coil upward without excessive side loading.
Before installing the new component, inspect the spark-plug tube for oil or moisture.
Check the coil boot for evidence of carbon tracking.
If you are changing spark plugs simultaneously, use the correct plug specification and torque procedure for your exact engine.
Do not coat electrical contacts randomly with grease. If dielectric grease is used, apply it appropriately to the insulating boot area rather than treating it as an electrical conductor.
Finally, clear diagnostic codes only after completing the repair, then road-test the vehicle and rescan for pending or returning misfires.
Frequently Asked Questions
What are the best ignition coils for an Acura TL?
For many 1999–2008 models, the ENA UF242 six-pack offers an appealing combination of fitment, value, and complete-set convenience.
For 2009–2014 TL models, the Astemo/Hitachi IGC0056 is my preferred OE-oriented individual replacement.
The DENSO 673-2310 is another strong individual-coil option for applicable 1999–2008 TL models.
How many ignition coils does an Acura TL have?
The V6 Acura TL uses six coil-on-plug ignition coils—one for each cylinder.
Should I replace all six coils at once?
Not necessarily.
If testing identifies one defective coil and the remaining five are healthy, replacing one is acceptable.
Replacing all six can make more sense on a high-mileage vehicle with original coils or a history of repeated coil failures.
What ignition coil fits a 2004 Acura TL?
The 2004 Acura TL 3.2L is commonly associated with the UF242 coil family. Both the ENA UF242 set and DENSO 673-2310 are listed for applicable older TL applications.
Always confirm the vehicle and OE number before purchase.
What ignition coil fits a 2007 Acura TL?
Fitment depends partly on whether you own the regular 3.2L TL or 3.5L Type-S.
The ENA UF242 product information lists applicable 2007–2008 TL 3.5L models in addition to 1999–2008 TL 3.2L applications.
What ignition coil fits a 2012 Acura TL?
The 2012 TL belongs to the fourth generation and uses the later ignition-coil design.
The Astemo/Hitachi IGC0056 is listed for 2009–2014 Acura TL applications.
Can a bad coil cause poor acceleration?
Yes.
An ignition coil that cannot generate a reliable spark under load can produce hesitation, misfiring, and noticeable power loss during acceleration.
Can ignition coils improve gas mileage?
New coils can restore efficiency if weak or failing coils were causing incomplete combustion.
Replacing perfectly healthy coils is unlikely to create a meaningful fuel-economy improvement.
Are expensive ignition coils always better?
No.
Price alone does not guarantee durability or correct performance.
Fitment, materials, manufacturing consistency, electrical design, heat resistance, and quality control matter more.
Can I replace Acura TL ignition coils myself?
Many mechanically inclined owners can.
The basic procedure involves disconnecting the coil connector, removing the retaining bolt, pulling the coil from the spark-plug well, and installing the replacement.
Rear-cylinder access can be more awkward, and anyone uncomfortable diagnosing misfires or working around engine electronics should use a qualified technician.
Final Thoughts
Choosing the best ignition coils for Acura TL begins with identifying the exact generation rather than choosing one universal coil for every TL.
For 1999–2008 Acura TL models, the ENA UF242 six-pack is my overall value pick. It makes the most sense when several original coils are aging and you want to replace the complete set in one service.
For a 2009–2014 Acura TL, I would choose the Astemo/Hitachi IGC0056 when reliability and OE-style construction are priorities.
For an older TL with one confirmed failed coil, the DENSO 673-2310 provides another quality-focused alternative without requiring replacement of all six units.
Most importantly, diagnose the vehicle before purchasing parts. A misfire can originate from a coil, spark plug, injector, wiring issue, vacuum leak, or mechanical problem. Confirming the cause and matching the replacement to the exact TL year and engine will produce a much better repair than simply installing whichever coil pack appears first in a search.
For most owners replacing a full set on an older TL, ENA is the practical value choice. For owners who want an individual, OE-oriented replacement—particularly on a later-generation TL—Astemo/Hitachi is the stronger premium choice.