BDFHYK UF343 ignition coil and 2647 iridium spark plug kit for 1999-2000 Mazda Miata 1.8L

UF343 ignition coil and 2647 iridium spark plugs for Mazda Miata 1.8L L4 ignition service

BDFHYK UF343 coil with four 2647 iridium spark plugs for 1999-2000 Miata 1.8L

UF343 ignition coil replacement kit for Mazda Miata 1.8L with 2647 spark plugs

Mazda Miata 1999-2000 1.8L UF343 ignition coil and 2647 spark plug kit

UF343 coil reference BP4W1810X with 2647 iridium spark plug kit for Mazda Miata

BDFHYK one UF343 ignition coil and four 2647 iridium spark plugs for Miata 1.8L

BDFHYK 1 Ignition Coil UF343 and 4 Iridium Spark Plug 2647 For Mazda Miata 1999-2000 1.8L L4

$74.49

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-11312-CK
OE Number For Coil: BP4W1810X, BP4W1810XA, BP4W1810XB, BP4W1810XB9U, UF343
OE Number For Spark plug:2647

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Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil + Spark Plug Kit
Primary Coil Reference	UF343
Spark Plug Reference	2647
Spark Plug Construction	Iridium electrode with ceramic insulator
Package Quantity	1 Ignition Coil + 4 Iridium Spark Plugs
Includes	1 Ignition Coil + 4 Iridium Spark Plugs
Ignition Coil Construction	Silicon steel core, high-temperature rubber and varnished copper wire
Engine	1.8L L4
Listed Vehicle Fitment	Mazda Miata 1999-2000 1.8L L4
OE / Interchange References	UF343, BP4W1810X, BP4W1810XA, BP4W1810XB, BP4W1810XB9U
Fitment Checks	Confirm exact year, 1.8L L4 engine, connector shape, mounting points, coil body and UF343 / 2647 references before ordering
Important Note	This kit contains 1 ignition coil and 4 spark plugs; it is not a four-coil set.

UF343 Ignition Coil & 2647 Iridium Spark Plug Kit for 1999-2000 Mazda Miata 1.8L

Misfire, rough idle, hard starting or hesitation can involve worn ignition components, but the same symptoms may also come from wiring, fuel delivery, intake leaks, sensors or mechanical faults. This BDFHYK UF343 ignition coil and 2647 iridium spark plug kit is an OE-style aftermarket replacement option for listed 1999-2000 Mazda Miata 1.8L L4 applications. Confirm the original coil design, connector and reference numbers before ordering.

UF343 / 2647 Fitment for Mazda Miata 1.8L

Mazda Miata 1999-2000 — 1.8L L4

Package note: This is a mixed-quantity ignition service kit containing 1 ignition coil and 4 spark plugs. It is not a four-coil set.

What Is Included in the UF343 / 2647 Miata Kit?

1 ignition coil
4 iridium spark plugs, reference 2647

UF343 Ignition Coil Reference Numbers

UF343, BP4W1810X, BP4W1810XA, BP4W1810XB, BP4W1810XB9U

Common Ignition Service Scenarios

Misfire or unstable idle after diagnostic inspection
Hard starting or hesitation with worn ignition components
Scheduled spark plug service combined with a diagnosed coil replacement

How to Confirm UF343 / 2647 Fitment Before Ordering

Confirm 1999-2000 Mazda Miata with the 1.8L L4 engine.
Compare the connector shape, mounting points, coil body and printed reference numbers with the original coil.
Confirm spark plug reference 2647 for the exact engine.
Verify that the service requires 1 coil and 4 spark plugs rather than a multi-coil set.
Follow the vehicle service information for spark plug gap and torque; do not use a generic value.

Diagnostic note: A misfire DTC does not by itself prove the ignition coil has failed. Inspect wiring, connectors, injectors, fuel delivery, intake or vacuum leaks, compression and mechanical timing as applicable.

Q: Will the UF343 and 2647 kit fit my Mazda Miata?
A: It is listed for 1999-2000 Mazda Miata 1.8L L4 applications. Confirm the engine, original coil design and references before ordering.

Q: What is included in this kit?
A: The package includes 1 UF343-style ignition coil and 4 iridium spark plugs with reference 2647.

Q: Why does the kit include one coil but four spark plugs?
A: The listed Miata ignition service package combines one replacement coil with a four-plug set. It is not a four-coil package.

Q: Which ignition coil references should I compare?
A: Compare UF343, BP4W1810X, BP4W1810XA, BP4W1810XB and BP4W1810XB9U with the original part where applicable.

Q: Which spark plug reference is included?
A: The listed spark plug reference is 2647, with an iridium electrode and ceramic insulator.

Q: Does a misfire code prove the ignition coil is bad?
A: No. Wiring, connectors, injectors, fuel delivery, intake leaks, sensors, compression or mechanical issues can also cause a misfire.

Q: Should the spark plugs be inspected when replacing the coil?
A: Yes. Check plug condition, contamination and the service interval so the ignition system is evaluated as a complete system.

Q: Can I use a generic spark plug gap or torque value?
A: No. Follow the exact Mazda 1.8L engine service specification for gap and torque.

Q: What should I compare on the original ignition coil?
A: Compare connector shape and keying, mounting points, coil body, boot condition and printed reference numbers.

Q: What should be checked during installation?
A: Inspect wiring, connectors and plug wells for damage, corrosion, oil or moisture and make sure the coil and plugs are installed to vehicle service procedures.

Q: What if the engine still misfires after replacement?
A: Continue diagnosis of wiring, injectors, fuel delivery, intake or vacuum leaks, sensors, compression and mechanical timing as applicable.

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.

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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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Mon–Fri 19:00–04:00 (UTC−6 / CST)

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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.