UF656 Ignition Coils Pack & 93501 Iridium Spark Plugs Compatible

In this review the UF656 ignition coils pack paired with 93501 iridium spark plugs is evaluated as a direct replacement option for a range of Mazda 2.0L and 2.5L engines. The bottom line: for owners of Mazda 3, Mazda 6, CX models and MX-5 Miata within the listed years who want a straightforward, cost-effective tune-up, this combo stands out because it restores consistent spark delivery and improved combustion without complex installation. The review focuses on fitment, build quality, and real-world effect on idle smoothness and driveability.

Key Features

• Compatibility: Fits many Mazda models and years so buyers can replace coils and plugs with confidence that the parts match factory fitment.
• Stable high-voltage output: The coils deliver consistent spark energy which promotes more complete fuel combustion and fewer misfires under normal driving.
• Durable materials: Copper windings and a ceramic insulator resist heat and help the coil maintain performance in engine bay conditions.
• Iridium spark plugs: The included 93501 iridium plugs provide a longer life electrode and a reliable spark for steady throttle response.
• Easy installation: Designed for straightforward swap-in replacement without specialized tools, saving time and service expense.
• Replaces factory numbers: Cross-references common OEM part numbers so technicians can verify compatibility quickly.

Who It's For

This kit is best for DIY mechanics and independent shops working on Mazda 3 2.0L and 2.5L, Mazda 6 2.5L, CX-3, CX-5, CX-30, CX-50 and MX-5 Miata engines in the model years listed who need a reliable ignition coil and plug combination to restore engine smoothness and responsiveness.

It is less appropriate for vehicles outside the stated fitment, for owners who require OEM-brand warranty documentation from the original manufacturer, or for high-performance builds that need upgraded coils with specialty tuning; those buyers should seek purpose-built performance parts or dealer-sourced components.

Pros & Cons

Pros

• Good fitment across many Mazda models, reducing installation guesswork for compatible cars.
• Improved ignition stability and combustion that many users report translates to smoother idle and better throttle response.
• Quality materials such as copper windings and ceramic insulation that suggest respectable durability in everyday use.
• Simple installation means most owners can perform the swap without expensive shop time.

Cons

• Not an OEM-branded part, so buyers seeking factory-branded packaging or direct dealer support may prefer original equipment sources.
• Limited to the listed vehicle applications; incorrect fitment outside those years or engine variants will require verification.

Specifications

Product Type	Ignition coil pack and iridium spark plugs set (4)
Compatible Models	Mazda 3, Mazda 6, CX-3, CX-5, CX-30, CX-50, MX-5 Miata (listed years)
Engine Sizes	2.0L and 2.5L engines where specified
Replaces Part Numbers	UF656, PE2018100, 5C1894, C1837 and similar OEM codes
Key Materials	Copper windings and ceramic insulator (coils); iridium electrode (plugs)
Installation	Direct fit replacement, no special tools required

Our Verdict

The UF656 ignition coils pack with 93501 iridium spark plugs is a practical value choice for Mazda owners needing to cure misfires, rough idle, or diminished throttle response. It offers solid build materials, clear cross-reference to OEM numbers, and easy installation, making it a sensible alternative to dealer parts for routine tune-ups. For routine street use and most repair budgets, this kit delivers reliable performance and good value.

Frequently Asked Questions

Will these coils and plugs fit my Mazda 3?
They fit Mazda 3 2.0L (2012-2022) and 2.5L (2014-2023) when the engine variant matches the listed applications; always verify with your VIN or part cross-reference.

Do the spark plugs require special gapping?
The 93501 iridium plugs are supplied pre-gapped to typical factory specification, but checking the gap before installation is recommended.

Can I install these myself?
Yes. The kit is designed for straightforward installation without specialized tools; basic hand tools and standard precautions are sufficient for most competent DIYers.