Genuine Mazda Spark Plug Set of 4 – NGK BKR6E-11 • BPY3-18-110

Genuine Mazda BPY3-18-110 Spark Plug Set of 4 – NGK BKR6E-11

Complete set of four Genuine Mazda-supplied NGK spark plugs for Mazda MX-5 Mk1 / NA, Mk2 / NB and Mk2.5 / NB-FL models with 1.6L and 1.8L petrol engines from 1990 to 2005 listed in the compatibility table.

Each spark plug creates the electrical spark that ignites the compressed air-fuel mixture within its cylinder. Correct plug condition, heat range and electrode gap are essential for reliable starting, stable idling, efficient combustion and consistent engine performance.

Worn, fouled or damaged spark plugs can contribute to difficult starting, hesitation, misfires, rough running, reduced fuel economy, loss of performance or increased exhaust emissions.

This listing supplies a complete set of four spark plugs, sufficient to service one four-cylinder Mazda MX-5 engine.

• Part type: Spark plug set
• Manufacturer: NGK for Mazda
• NGK specification: BKR6E-11
• Primary use: Ignites the air-fuel mixture within each engine cylinder
• System: Engine ignition
• Vehicle application: Mazda MX-5 Mk1, Mk2 and Mk2.5
• Engine applications: 1.6L and 1.8L petrol
• Thread size: M14 × 1.25
• Thread reach: Approximately 19 mm
• Spanner / socket size: 16 mm
• Nominal electrode gap: 1.1 mm
• Quantity per engine: Four
• Quantity supplied: Four spark plugs
• Brand: Genuine Mazda
• Part No. supplied: BPY3-18-110
• Current Mazda superseding reference: BP14-18-110
• Also referenced as: BPY318110 and BP1418110

Fitment advice: Suitable for the standard normally aspirated 1.6L and 1.8L MX-5 applications listed. Modified, turbocharged, supercharged or competition vehicles may require a different spark-plug heat range or electrode gap according to their engine specification and tuner requirements.

Other items to consider: When servicing the ignition system, you may also want to consider purchasing ignition leads, coil-pack components, dielectric grease and air, oil and fuel filters where a complete service is being performed.

Useful tools / consumables: 16 mm spark-plug socket, suitable extension, ratchet, compressed air or a soft brush, feeler gauge, dielectric grease for the plug boots and a calibrated torque wrench.

Difficulty guide: DIY Difficulty: Easy to Moderate. Access is generally straightforward, but care is required to avoid cross-threading the aluminium cylinder head or overtightening the plugs.

Why Genuine Mazda? Genuine Mazda spark plugs are selected for the intended engine combustion characteristics, thread dimensions, heat range and ignition-system requirements. Using the correct OE-specified plug supports reliable fitment and consistent engine operation.

What’s in the box: Four Genuine Mazda-supplied NGK BKR6E-11 spark plugs under Mazda part number BPY3-18-110. Ignition leads, coils and installation tools are not included unless specifically shown or stated separately.

Installation notes: Allow the engine to cool fully before removing the original plugs. Clean around each plug well before removal to prevent debris entering the cylinders. Start each replacement plug by hand to avoid cross-threading, then tighten to the applicable Mazda or spark-plug manufacturer specification. Refit the ignition leads or coil connections securely in their original positions.