NGK Racing Spark Plug 4901 R7437-8

NGK Racing Series plugs are engineered to withstand the harshest engine conditions. Fine wire iridium tipped center electrode improves ignitability, increases durability and enhances anti fouling capabilities. Special insulator nose configurations improve throttle response. 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.

Specifications

Spark Plug - NGK Racing - 14 mm Thread - 26.5 mm Reach - Gasket Seat - Stock Number 4901 - Resistor - Each

• Thread Diameter: 14mm
• Thread Pitch: 1.25mm
• Seat Type: Gasket
• Reach: 26.5mm (1.04")
• Hex Size: 5/8" (16mm)
• Terminal Type: Solid
• Overall Height: ISO
• Gap: .028" (0.7mm)

• Material: Iridium
• Type: Fine Wire
• Size: 0.6mm
• Projection: Projected

• Material: Nickel
• Type: Standard
• Shape: Taper Cut
• Quantity: 1

• Resistor: Yes
• Resistor Value: 5k Ohm
• Heat Range: 8
• Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

• Brand: NGK/NTK
• Warranty: 1 Year
• MPN: R7437-8