BDFHYK UF408 ignition coil and 7090 spark plug set for Mazda Miata

BDFHYK UF408 ignition coil OE-style replacement for Mazda Miata 1.8L

BDFHYK 7090 iridium spark plugs with UF408 ignition coil set

BDFHYK Mazda Miata 1.8L ignition coil and spark plug kit

BDFHYK UF408 coil connector and body detail for Mazda Miata

BDFHYK ignition coils and spark plugs for Mazda Miata service

BDFHYK OE-style Mazda Miata ignition coil and plug set

BDFHYK 2 Ignition Coil UF408 and 4 Iridium Spark Plug 7090 for Mazda Miata 1.8L L4 2001-2005

$52.99

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-11343-CK
OE Number For Coil: 1788481, 230253, 521707, 5C1202, 72932012, 9212060, B201, B298, BP6D18100A, BP6D18100A9U, C1339, E428, EBC1495, GN10437, IC528SB, UF408
OE Number For Spark plug:7090

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Technical Specifications

Brand & Model	BDFHYK UF408 Ignition Coil & 7090 Iridium Spark Plug Set
Package Includes	2x BDFHYK ignition coils (UF408) + 4x iridium spark plugs (7090)
Replacement Type	OE-style aftermarket ignition coil and spark plug service kit
Ignition Coil OE	UF408, GN10437, IC528SB, C1339, E428, BP6D18100A, BP6D18100A9U, 5C1202, B201, B298, 1788481, 230253, 521707, 72932012, 9212060, EBC1495
Spark Plug OE	7090
Mazda Miata Fitment	Mazda Miata 2001-2005 1.8L L4 listed applications; confirm engine, UF408-style coil, connector shape, mounting points, and 7090 plug reference before ordering
Engine Compatibility	Listed Mazda 1.8L L4 gasoline engine applications only
Common Symptoms	Engine misfire, rough idle, hard start, hesitation, poor acceleration, poor fuel economy, check engine light
Pre-Installation Check	Inspect spark plug condition, plug gap, coil connector, wiring, ground, fuel delivery, vacuum leaks, and diagnostic trouble codes before replacement
Critical Note	Do not order by model name alone. Year, engine, coil reference, spark plug reference, connector, and mounting style must match
Important Note	This is not a factory-branded Mazda part. Compare with the original parts and follow vehicle-specific service procedures

UF408 Ignition Coil and 7090 Spark Plug Set for Mazda Miata 1.8L

This BDFHYK UF408 ignition coil and 7090 iridium spark plug set is designed for the listed Mazda Miata 1.8L L4 application. It is intended for ignition service when the original coils or plugs have been diagnosed as worn, damaged, or contributing to misfire-related drivability issues.

Vehicle Fitment for This Mazda Miata Ignition Kit

Make	Model	Year	Engine	Fitment Check
Mazda	Miata	2001-2005	1.8L L4	Confirm UF408-style ignition coil, 7090 spark plug reference, connector shape, mounting points, and original ignition layout.

Fitment note: Do not order by Miata model name alone. Year, engine, coil reference, spark plug reference, connector shape, and mounting design must match the original parts.

When Ignition Coils and Spark Plugs May Need Replacement

Weak ignition coils and spark plugs can be related to hard starting, rough idle, hesitation, poor acceleration, poor fuel economy, or a check engine light. Because similar symptoms may come from fuel, air, sensor, wiring, or compression faults, confirm the issue before ordering parts. If a coil circuit code appears, review P0351-P0354 codes during diagnosis.

UF408 and 7090 Reference Checks

Compare UF408, GN10437, IC528SB, C1339, E428, BP6D18100A, BP6D18100A9U, 5C1202, B201, and B298 with the original coil.
Compare spark plug reference 7090 with the plug required by your Mazda Miata engine.
Confirm that 2 ignition coils and 4 iridium spark plugs match the repair quantity.

Service Notes for Mazda Miata Ignition Coils and Spark Plugs

When replacing ignition coils and spark plugs together, inspect plug condition, plug gap, coil connectors, wiring, and stored misfire codes before installation. For a step-by-step overview, read the guide to ignition coils and spark plugs. This BDFHYK set is an OE-style aftermarket replacement, not a factory-branded Mazda part.

Q: Will this UF408 ignition coil and spark plug set fit my Mazda Miata?

A: It is listed for 2001-2005 Mazda Miata 1.8L L4 applications. Confirm year, engine, original coil reference, connector shape, and 7090 plug reference before ordering.

Q: What is included in this Mazda Miata ignition kit?

A: The package includes 2 ignition coils and 4 iridium spark plugs. Confirm this quantity matches your repair plan.

Q: Which coil references should I compare?

A: Compare UF408, GN10437, IC528SB, C1339, E428, BP6D18100A, BP6D18100A9U, 5C1202, B201, B298, and related references with the original coil.

Q: Can this help with P0351-P0354 style codes?

A: It may help only when the ignition coil or spark plugs have been diagnosed as faulty. Circuit codes can also involve wiring, connectors, or control signal issues.

Q: Should I replace coils and plugs together?

A: They are commonly inspected together because worn plugs can increase coil load. Replace based on diagnosis, condition, and service interval.

Q: Is this a factory Mazda part?

A: No. This is a BDFHYK OE-style aftermarket replacement, not a factory-branded Mazda part.

Returns & Refunds

We accept returns within 30 days of delivery for eligible items. If the product is unused and in original condition, you may request a return according to our refund policy. Full policy details: View Refund Policy . We recommend contacting our support team before initiating a return to ensure the fastest resolution.

Customer Support

If you purchased the wrong part, received an incompatible item, or need installation assistance, please contact us directly.

Email: service@bdfhyk.com

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Before vs After Replacement

Replacing worn ignition coils and spark plugs helps restore stable ignition and smoother engine performance.

BEFORE

Rough Idle & Engine Vibration Noticeable engine shaking while idling. Irregular exhaust flow may indicate unstable ignition performance.

AFTER

Fast Start & Stable Idle IMore consistent spark delivery reduces misfires and stabilizes idle speed.

BEFORE

Sluggish Acceleration Weak throttle response at lower RPM. Vehicle may feel underpowered.

AFTER

Enhanced Power Response Improved throttle response and smoother acceleration

BEFORE

Increased Fuel Consumption Poor combustion can lead to higher fuel usage.

AFTER

Improved Fuel Efficiency Optimized ignition supports more efficient combustion.

Performance improvements may vary depending on vehicle condition.