CMR6H Spark Plug, Small Engine, 5/8 In Hex

The NGK CMR6H is a spark plug for small gasoline engines used in lawn and garden equipment, including STIHL branded tools such as blowers, brushcutters, chainsaws, pole pruners, and hedgetrimmers. This replacement spark plug is designed to deliver reliable ignition for outdoor power tools.

NGK is the largest OE (original equipment) supplier of spark plugs in North America. The CMR6H is engineered to withstand the demanding conditions of small engine operation and represents NGK's commitment to quality and dependability.

Features and Benefits

• Ceramic Insulator with Power Tip Design: The high-grade alumina silicate ceramic construction provides superior insulation and resists dielectric punch-through. The longer insulator nose prevents fouling and loading, ensuring reliable performance even during prolonged idling or low-speed operation.
• Rigorous Quality Testing: Each plug undergoes mechanical vibration and thermal shock testing to guarantee reliability and durability under the varying conditions of small engine use.
• Triple Gasket Sealing: This innovative design virtually eliminates combustion gas leakage, promoting efficient engine operation and consistent spark delivery.
• Trivalent Metal Plating: The protective surface finish requires no anti-seize compound, simplifying installation and reducing maintenance hassle.
• OEM Compatibility: Designed as a direct replacement for STIHL small engines and other lawn and garden equipment brands requiring this spark plug specification.

Specifications

• Brand: NGK
• Model: CMR6H (NGK 3365)
• Spark Gap: 0.028 in
• Thread: M10 x 1
• Hex Size: 5/8 in
• Insulator Material: Ceramic