NGK BR6HS-10 Spark Plug Yamaha F6C F6 CMHS T8 4-Stroke

NGK BR6HS-10 Resistor Spark Plug for Yamaha Outboards

Standard NGK marine spark plug for selected Yamaha 4-stroke outboards. The BR6HS-10 combines a compact 12.7 mm reach, heat range 6 and an integrated resistor to support reliable ignition while reducing electrical interference.

Verified Yamaha Applications

• Yamaha F6C: 6 HP, 1-cylinder, 139 cc, 4-stroke — NGK catalogue application from 2010 onward
• Yamaha F6 CMHS: 6 HP, 4-stroke — selected production variants
• Yamaha T8 OHV High Thrust: 8 HP, 4-stroke — 2001–2005
• Yamaha T8: 8 HP, 4-stroke — 2006–2010

Compatibility note: Yamaha model names and specifications vary by market. Confirm the complete model code, production year and existing plug designation before ordering.

Technical Specifications

Check Before Ordering

1. Locate the Yamaha model code and production year on the outboard ID plate.
2. Confirm BR6HS-10 in the owner's manual or on the plug being replaced.
3. Do not select a plug using horsepower alone.
4. Use the engine manufacturer's tightening procedure and torque specification.

Not a Tohatsu MFS service plug: this listing should not be used for MFS2.5D, MFS3.5A, MFS4D, MFS5D, MFS6D or MFS8D engines. Those Tohatsu 4-stroke families use a different spark-plug specification.

Frequently Asked Questions

Is BR6HS-10 a resistor spark plug?
Yes. The “R” denotes an integrated resistor, which helps suppress ignition-related electrical interference.

Is the electrode gap preset?
NGK specifies a 1.0 mm gap for BR6HS-10. Always compare it with the exact Yamaha service specification before installation.

How many spark plugs are supplied?
One plug is included. The verified Yamaha F6C application is a single-cylinder engine.

Will this fit my Tohatsu MFS outboard?
No. The previously listed MFS compatibility was incorrect; use the plug specified for the exact Tohatsu model instead.