NGK CMR7A Spark Plug 7543

NGK standard plugs are constructed for longer life and optimum performance.

• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
• Corrugated ribs prevent flashover
• Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
• Copper core aids in heat removal
• Triple seals prevent leakage

Shell:

• Thread Size: 10mm
• Thread Pitch: 1.0mm
• Seat Type: Gasket
• Resistor Value: 10K Ohm
• Reach: 9.5mm (3/8")
• Hex Size: 5/8" (16mm)
• Terminal Type: Solid
• Overall Height: Bantam
• Gap: .028" (0.7mm)

Center Electrode:

• Material: Nickel
• Type: Standard
• Size: 2.5mm
• Projection: Non-Projected

Ground Electrode:

• Material: Nickel
• Type: Standard
• Quantity: 1

Specifications:

• Torque Specs: Cast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft.
• Heat Range: 7
• Longevity: 30k Miles
• Resistor: Yes