The NGK CMR6H Spark Plug is a premium resistor-type replacement designed specifically for modern high-performance outdoor power equipment. As a direct OEM-quality alternative to STIHL part number 0000 400 7011, this plug is engineered to withstand the intense heat and high-RPM demands of 4-MIX® and professional 2-stroke engines. Whether you are maintaining a professional chainsaw, backpack blower, or trimmer, the CMR6H ensures reliable ignition and consistent engine performance.
Constructed with a pure copper core, this spark plug provides superior heat dissipation, preventing the engine from overheating during prolonged use. The trivalent metal plating offers excellent anti-corrosion and anti-seizing properties, making future spark plug changes easier. Pre-gapped to 0.028" (0.7mm), it is ready for immediate installation in most STIHL handheld tools.
Maintenance Tip: To maintain peak fuel efficiency and easy starting, it is recommended to inspect your spark plug every 25 hours of use and replace it annually as part of a full engine tune-up.
Key Features & Benefits
Reliable Ignition & Performance
- Trivalent Metal Plating: Superior anti-corrosion properties ensure the plug won't seize in the cylinder head, even in high-moisture environments.
- Corrugated Ribs: Designed to prevent "flashover" (electrical leakage), ensuring a strong, consistent spark every time you pull the starter rope.
- Triple Gasket Seal: Eliminates the possibility of combustion gas leakage, maintaining full engine compression and power.
Advanced Engineering
- Copper Core: Aids in heat removal, which is critical for the high-operating temperatures of modern low-emission engines.
- High-Alumina Ceramic Insulator: Provides better insulation and heat transfer to prevent electrode fouling and pre-ignition.
- Resistor Design: Reduces electromagnetic interference (EMI) to protect the ignition module and nearby electronic devices.
Broad STIHL Compatibility
- Multi-Tool Fitment: The standard plug for the most popular STIHL models, including the BR 600/700/800 blowers, FS 91/111/131 trimmers, and MS 201/251/500i chainsaws.
- OEM Specification: Matches the exact heat range and thread reach required by the manufacturer to prevent engine damage.
Technical Specifications & Compatibility
| Brand / Model | NGK CMR6H (Stock #3365) |
| Thread Diameter | 10 mm |
| Thread Reach | 12.7 mm (1/2") |
| Hex Size | 5/8" (16 mm) |
| Factory Gap | 0.028" (0.7 mm) |
| STIHL Cross-Ref | 0000 400 7011 |
| Compatible STIHL Models | Blowers & Shredder Vacs: BG 56, BG 66, BG 86, SH 56, SH 86, BR 200, BR 500, BR 550, BR 600, BR 700, and BR 800 series. Trimmers & Brushcutters: FS 40, FS 50, FS 56, FS 70, FS 87, FS 90, FS 91, FS 94, FS 100, FS 110, FS 111, FS 130, FS 131, and FS 310. Chainsaws: MS 150, MS 151, MS 171, MS 181, MS 192, MS 193, MS 194, MS 201, MS 211, MS 231, MS 241, MS 251, MS 462, and the MS 500i. KombiSystem & MultiSystem: KM 56, KM 90, KM 91, KM 110, KM 111, KM 130, KM 131, and HT 100/101/130/131 pole pruners. |