BDFHYK Ignition Coils for Mazda 3/6 CX-3 CX-5 CX-9 MX-5 Miata — Set of 4, Direct-Fit High-Heat Durable Replacement

BDFHYK ignition coil pack replaces worn coils on many Mazda 3, Mazda 6, CX-3, CX-5, CX-9 and MX-5 Miata models for reliable spark delivery and smoother running.

If your Mazda shows rough idle, intermittent misfires, slow starts or reduced fuel efficiency, worn ignition coils are a common suspect. This set of four BDFHYK coils is engineered as a direct-fit replacement for OE numbers such as UF656, UF805, PE0118100 and others, and is built using high-grade PBT and PPO materials with the original-style control chip to improve durability under heat and vibration.

Which Mazda models and engines will these coils fit?

These coils are designed for multiple Mazda platforms with inline-four engines. Always cross-check your vehicle year, engine displacement and the OE part number before ordering to confirm fitment.

• Mazda 3 (2012–2023) and Mazda 3 Sport (select years)
• Mazda 6 (2014–2021), CX-3 (2016–2023), CX-5 (2013–2020)
• Mazda CX-9 (2016–2019) and MX-5 Miata (2016–2018)
• Compatible with OE numbers UF656, UF805, PE0118100, UF656T, C857 and equivalents

How do these coils improve engine performance?

By restoring reliable high-voltage spark delivery, fresh coils help the engine ignite fuel more consistently, which reduces misfires and can improve throttle response and fuel use. BDFHYK uses quality materials and the original-style chip to match factory timing and resistance.

• Reduces chance of misfire-related rough running
• Helps shorten engine cranking time
• May stabilize idle and restore low-end power
• Designed for heat and corrosion resistance to extend life

Is installation straightforward for a home mechanic?

Yes — these coils are built as direct replacements and the package includes a coil installation guide. Basic hand tools and standard precautions (disconnect battery, mark wiring) are usually all that’s needed for removal and replacement.

• Direct-fit design for the listed Mazda models
• Includes installation manual in the box
• No special programming required; uses original-style chip
• Recommended: inspect and replace spark plugs if aged

What are the features that make these coils durable?

BDFHYK constructs the coils using PBT from Germany and PPO-grade materials from the U.S., paired with factory-equivalent internal electronics to resist heat, wear and corrosion. These design choices aim to reduce premature failure when compared to lower-quality aftermarket coils.

• High-grade polymer housings for thermal and chemical resistance
• Original-spec control chip for stable electrical performance
• Manufactured with automotive production standards and testing
• Packaged as a set of four for a complete bank refresh

Who is this for: This four-coil pack is intended for Mazda owners and DIY mechanics who need a reliable, OE-compatible replacement for worn ignition coils on 2.0L, 2.2L and 2.5L inline-four engines. It’s also suitable for repair shops looking for a cost-effective, well-built coil option that matches common Mazda part numbers. Verify compatibility with your vehicle’s year, engine, and OE part number before purchase to ensure correct fitment.