STIHL NGK BPMR7A Spark Plug features a 5-Rib insulator design to prevent flashover and are also treated with corrosion-resistant plating to ensure ease of installation and removal. Cold rolled threads prevent damage to cylinder head.
- Preset Gap (mm): 0.7mm
- Hex Size: 3/4″
- Seat: Flat
- Thread Size: 14mm
- Tip Material: Nickel
- Approximate Resistor Value: 10K Ohm
- Center Electrode Core Material: Copper
- Ground Configuration: Standard
- Ground Electrode Core Material: Nickel
- Ground Electrode Tip Design: Standard
- Insulator Height: 40mm
- Number Of Ground Electrodes: 1
- Heat Range: 7
- Resistor Plug: Yes
- Thread Diameter: 0.551″
- Thread Reach: 3/8″
- Thread Reach: 9.5mm
- Type Of Resistor: Standard
