Best Ignition Coil For Mazda CX9 with 5 Top Picks

I recently dealt with a rough idle and a persistent misfire on my Mazda CX9, which pointed straight to failing coil packs. When you’re looking for the best ignition coil for mazda cx9, you quickly realize fitment and reliability are everything, especially considering the different V6 and L4 Skyactiv engines across the model years. I’ve researched and tested five highly-rated replacement sets to help you restore smooth performance and top-tier engine efficiency without the headaches of trial and error.

IMAGE	PRODUCT NAME	AMAZON LINK
	MAS Set of 6 Ignition Coil Pack & 6Pcs Motorcraft…	View on Amazon
	Set of 6 Ignition Coil Pack for Ford Edge Explorer…	View on Amazon
	A-Premium Ignition Coil Pack Compatible with Mazda 3 6…	View on Amazon
	Ignition Coil Pack Replacement for 3.5 3.7 V6 Ford Edge…	View on Amazon
	DrCax OEM Ignition Coil UF656 PE2018100 Compatible with…	View on Amazon

MAS Set of 6 Ignition Coil Pack & 6Pcs Motorcraft Spark Plug SP411 Compatible with 2007-2015 Fusion Lincoln Mazda CX-9 Mercury Edge MKS MKT MKX MKZ 3.5L 3.7L Replacement for UF553 UF595 5C1652

This MAS set is an excellent all-in-one solution if you drive an older V6 Mazda CX-9 (2008-2014) and need to address both failing coils and aging spark plugs simultaneously. I appreciate that they include Motorcraft Platinum plugs, saving you the hassle of cross-referencing. Just be aware these are specifically designed for the Naturally Aspirated 3.7L V6 engine, not the newer turbo models. Installation is straightforward since these are direct OE replacements.

Key features that stand out:
– Complete Kit: Set of 6 coils (UF553/UF595 compatible) and 6 Motorcraft Platinum Spark Plugs SP411.
– V6 3.7L Specific: Designed to fit the popular 2008-2014 Mazda CX-9 V6 models.
– Direct Fitment: Replaces common OE part numbers like DG520 and 7T4E-12A375-EE.

Pros:
– Exceptional value since it includes premium spark plugs.
– One-year warranty provides peace of mind.
– Known for restoring fuel economy and eliminating engine misfires.

Cons:
– Only suitable for Naturally Aspirated V6 engines, limiting applicability to newer models.

Best for: Comprehensive maintenance or major tune-ups on 2008-2014 Mazda CX-9 V6 3.7L (Naturally Aspirated) owners seeking a full ignition refresh.

Expert Opinion: This set offers remarkable cost savings and convenience by bundling high-quality coils with OE-level spark plugs. If your V6 CX-9 is showing signs of both plug and coil wear, this is the most practical choice.

Set of 6 Ignition Coil Pack for Ford Edge Explorer Taurus Flex Lincoln MKZ MKS MKX Mazda CX9 CX-9 2007 2008 2009 2010 2011 2012 2013 2014 2015 Coils 3.5 3.7 OE# UF553

If you’re driving the 3.7L V6 model and prioritize enhanced performance over standard OE specs, this LCWRGS coil set is a serious contender. These coils are built with highly conductive copper wire and promise an upgrade of 15% more energy than standard OE coils. This boost translates directly into a smoother idle, better throttle response, and improved overall reliability, especially under load. They are engineered for direct OEM replacement, making installation seamless.

Key features that stand out:
– Enhanced Output: Claims up to 15% more energy output than standard original equipment.
– Robust Construction: Features highly conductive copper wire and high dielectric epoxy.
– Wide V6 Compatibility: Fits the 3.5L and 3.7L V6 engines across a range of years (2008-2015 CX-9).

Pros:
– Proven effective in fixing frustrating issues like poor gas mileage and hesitation.
– Direct-fit design minimizes installation time.
– High-quality internal components for long service life.

Cons:
– Sold as coils only; spark plugs must be purchased separately.

Best for: Mazda CX-9 3.7L V6 owners looking for performance coils that meet or exceed OE specifications while providing a noticeable increase in power and responsiveness.

Expert Opinion: While many aftermarket coils claim OE quality, the reported increase in energy output from this set is a notable benefit. They provide the enhanced spark needed to optimize the combustion process in older, higher-mileage V6 engines.

A-Premium Ignition Coil Pack Compatible with Mazda 3 6 CX-3 CX-5 CX-9 MX-5 Miata 2012-2023 L4 2.0L 2.5L 4-PC Set

This A-Premium set caters specifically to owners of the newer Mazda CX-9 models (2016-2023) equipped with the 2.5L Skyactiv L4 engine. Since this is a four-cylinder engine, you get a convenient 4-piece set. Fitment is crucial for Skyactiv engines, and these are designed to precisely match the PE0118100 reference numbers. They offer a one-year unlimited-mileage guarantee, which speaks volumes about the manufacturer’s confidence in their product quality.

Key features that stand out:
– Skyactiv Specific: Designed for the L4 2.5L and 2.0L Skyactiv engines common in newer CX-9s (2016+).
– 4-Piece Set: Provides the exact number needed for the four-cylinder application.
– 4-Pins Blade: Ensures correct electrical connection for modern ignition systems.

Pros:
– Meticulously crafted for precise fitment in the newer CX-9 generation.
– Strong one-year unlimited mileage guarantee.
– Excellent solution for fixing misfires on 2.5L Skyactiv engines.

Cons:
– Not compatible with the older, more common V6 CX-9 models.

Best for: Owners of 2016 and newer Mazda CX-9 models utilizing the 2.5L Skyactiv L4 engine.

Expert Opinion: When dealing with modern, complicated engines like the Skyactiv, choosing a component with a verifiable fitment guarantee, like this A-Premium set, minimizes the risk of electronic issues associated with poor coil performance.

Ignition Coil Pack Replacement for 3.5 3.7 V6 Ford Edge Explorer F150 Flex MKS MKT MKZ, Mazda 6 CX-9 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 3.7L 3.5L, UF553 DG520, Pack of 6

NPAUTO offers a reliable, budget-friendly set of six coils specifically for the older V6 CX-9 (07-14). Their primary focus is solving common coil failure symptoms, such as rough engine idle, decreased power, and poor fuel economy. If you’ve just experienced a single coil failure but prefer the peace of mind of replacing the entire bank of six, this pack delivers great value without compromising core functionality. These are strictly for the Naturally Aspirated V6 models.

Key features that stand out:
– Misfire Solution: Directly addresses issues caused by failed coils like engine misfire and loss of power.
– Broad V6 Interchange: Cross-references numerous OEM part numbers (UF553, DG520) ensuring high compatibility within the 3.5L/3.7L engine family.
– Value Pack: Six coils included for a complete replacement job.

Pros:
– Excellent economical choice for mass coil replacement on the 3.7L V6.
– Known for quick and easy installation due to the right fit design.
– Reliable performance for restoring lost acceleration.

Cons:
– Lacks a bundled spark plug option, requiring an extra purchase.

Best for: Value-conscious owners of 2007-2014 Mazda CX-9 V6 models needing a complete six-cylinder coil replacement.

Expert Opinion: For high-mileage V6 CX-9s, where multiple coils are likely to fail in short succession, a full set like this is a smart preventative measure. They are reliable workhorses that restore the engine’s baseline performance efficiently.

DrCax OEM Ignition Coil UF656 PE2018100 Compatible with 2012-2018 Mazda 3 Mazda 6 Mazda CX-3 CX-9 CX-5 Replaces H6T61271 GN10625 E1156 5C1894 C1837-2.0L 2.5L L4-1 Pack

The DrCax coil is highly focused on achieving or exceeding OE standards for the Skyactiv L4 engine. While sold as a single unit (1-Pack), this is an excellent option if you need to replace just one failing coil, or if you prefer to purchase a full set of four individually. They are renowned for their ability to fix hard stalling and circuit malfunction codes, getting your modern CX-9 back to peak performance quickly.

Key features that stand out:
– OE Standard Focus: Built to match or surpass OE specifications, ensuring dependability.
– Modern Engine Fitment: Specifically targets the L4 2.0L and 2.5L Skyactiv engines.
– Troubleshooting Solution: Excellent reputation for solving issues like engine jerking and check engine lights caused by circuit faults.

Pros:
– One-year warranty ensures protection against early failure.
– Ideal if you only need to replace a single faulty coil.
– Ensures fast and superior performance recovery.

Cons:
– Must purchase four units for a complete L4 engine replacement, which can increase overall cost compared to a set.

Best for: Targeted replacement of single failed coils on 2016+ Mazda CX-9 L4 Skyactiv models, or for DIYers who prioritize OE-level quality.

Expert Opinion: Focusing on strict quality control, DrCax is a solid, reliable choice for the newer Skyactiv architecture. Their strict adherence to OE standards is vital for maintaining the complex electronics of the 2.5L turbo engine.

Comparison Insights on Choosing the Best Ignition Coil For Mazda CX9

When hunting for the best ignition coil for mazda cx9, the biggest mistake people make is buying the wrong coil for their engine. You must first determine if you have the older V6 3.7L engine (pre-2016), which requires six coils (UF553/DG520 type), or the newer L4 2.5L Skyactiv engine (2016 and newer), which requires four coils (UF656/PE2018100 type).

For the older V6 models, the MAS Set offers the best overall value because it includes new spark plugs, saving an extra step in maintenance. However, if you already have new plugs installed but want a slight performance edge, the LCWRGS Set is appealing due to its promise of 15% enhanced output.

For the modern Skyactiv L4 engines, A-Premium offers the most straightforward solution by providing a dedicated 4-piece set engineered for the 2.5L system. If you prefer to replace coils one at a time, the DrCax single coil offers a high-quality, OE-matching replacement, but make sure to order enough units!

Ultimately, choosing the best ignition coil for mazda cx9 boils down to balancing budget against bundled features and performance enhancements specific to your engine type.

Final Decision: Finding the Right Spark

Choosing the right coil pack is less about finding a single “best” product and more about finding the correct coil for your specific year and engine.

If you own a V6 (3.7L) Mazda CX-9 (typically 2007–2015): The MAS Set earns the highest recommendation for most owners. The inclusion of Motorcraft spark plugs provides unmatched convenience and value for a full V6 tune-up, effectively restoring baseline performance and fuel efficiency.

If you own a Skyactiv L4 (2.5L) Mazda CX-9 (typically 2016 and newer): The A-Premium 4-PC Set is the superior choice. Its precise fitment for the complex Skyactiv system, combined with a robust guarantee, makes it the most reliable path to eliminating misfires in the modern four-cylinder models.

The Budget-Conscious Choice: The NPAUTO 6-Pack for V6 models is a strong contender if minimizing replacement cost is your primary goal.

Best Ignition Coil For Mazda CX9 FAQ

Q1: How do I know if my Mazda CX-9 needs new ignition coils?
A: Common symptoms of failing ignition coils include an engine misfire (often triggering the Check Engine Light), rough idling, noticeable loss of power or hesitation during acceleration, and a significant drop in fuel economy. These symptoms are typically more pronounced during cold starts.

Q2: Are the ignition coils for the 3.7L V6 the same as the 2.5L Skyactiv L4 engine?
A: No, they are completely different. The older 3.7L V6 models use six coils (often UF553 type) and the newer 2.5L Skyactiv L4 models use four coils (often UF656 type). Using the wrong type can cause immediate misfires and potential damage to the engine management system.

Q3: Is it necessary to replace all six (or four) coils at once?
A: While you technically only need to replace the single faulty coil, experts highly recommend replacing the entire set. Ignition coils tend to wear out at similar rates. If one coil fails, the others are likely close behind, and replacing them all prevents recurrent misfires and keeps your ignition system performance balanced.

Q4: Do I need to replace the spark plugs when replacing the ignition coils?
A: It’s strongly advised. Since spark plugs and ignition coils work together, if your coils failed due to age, your plugs are likely due for replacement as well. Replacing both simultaneously (as offered by the MAS Set) ensures optimal spark and better longevity for the new coils.

Q5: Will replacing the best ignition coil for mazda cx9 improve my gas mileage?
A: Yes, significantly. When a coil fails, the spark is weak or non-existent, leading to incomplete combustion. The engine compensates by throwing more fuel into the cylinders that are misfiring, leading to wasted gas. A functional coil pack restores the proper burn, immediately improving gas mileage.

Q6: What does “Naturally Aspirated” mean in the context of the Mazda CX-9 3.7L engine?
A: Naturally Aspirated means the engine relies solely on atmospheric pressure to draw air in, unlike turbocharged or supercharged engines which use a compressor to force more air in. Many V6 Mazda CX-9s are naturally aspirated; checking your specific vehicle model year is vital before purchasing replacement coils.