NGK SPARK PLUG NGK-YR5

The NGK YR5 is a genuine NGK V-Power resistor spark plug, also identified by stock number 7052. It is designed to deliver reliable ignition performance with NGK’s V-groove center electrode design and is used in selected marine and other engine applications where the exact plug specification is required.

Key Features

• Genuine NGK YR5 spark plug
• NGK stock number 7052
• V-Power design for improved ignitability
• Resistor spark plug
• Common supportable specifications include 14 mm thread, 0.460 in. reach, and tapered seat

Engine Compatibility

Used in selected marine and other engine applications. Exact compatibility depends on the engine manufacturer’s required spark plug specification, so this plug should be matched by application, engine model, and engine serial number where applicable.

Serial Number Fitment Notice

Spark plug fitment can vary by engine family, cylinder-head design, seat style, and ignition specification. Always confirm compatibility by engine model, serial number, and the manufacturer’s recommended spark plug reference before ordering.

When This Part Needs Replacement

Replace this spark plug during scheduled tune-up intervals, when misfire symptoms appear, when starting becomes harder than normal, or when inspection shows fouling, worn electrodes, or inconsistent spark performance.

Installation Notes

Install only after confirming the correct plug specification for the application. Because this plug is commonly referenced as a resistor, tapered-seat design with specific thread and reach dimensions, it should be matched carefully to the engine’s required plug type before installation.

Alternate/Superseded Part Numbers

Current references identify this plug as YR5, with NGK stock number 7052.

Parts Desk Insight

Spark plugs are easy to treat as generic, but small differences in reach, seat style, and heat range matter. Matching the exact plug code is the easiest way to avoid rough running, hard starts, and repeat tune-up work.

Shipping: Ships same or next day for fast Canada wide shipping.