NGK Racing Spark Plug R7437-9

NGK racing spark plugs are built to withstand the severe mechanical and thermal shock associated with high-revving, high-compression engines. NGK racing plugs feature special electrode materials—precious metals like platinum, iridium, and ruthenium—for greater durability and low voltage requirements. Fine-wire center and ground electrodes provide better sparking and enhanced ignitability. And, the unique arrangement of insulator noses improves throttle response! Whether you're a weekend warrior or an expert racer, rocket your way to victory with racing spark plugs from NGK—the people who spark winners!
 
NGK Racing Series Plugs are Engineered to Withstand the Harshest Engine Conditions.
•Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark
•Iridium Alloy has an Extremely High Melting Point, Perfect for Today's High-Tech, High Performance Engines
•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
Specifications:
Shell
Thread Size:  14mm
Thread Pitch:  1.25mm
Seat Type:  Gasket
Resistor:  Yes
Resistor Value:  5K Ohm
Reach:  26.5mm (1.04")
Hex Size:  5/8" (16mm)
Terminal Type:  Solid
Overall Height:  ISO
Gap:  .028" (0.7mm)

Center Electrode
Material:  Iridium
Type:  Fine Wire
Size:  0.6mm
Projection:  Projected

Ground Electrode
Material:  Nickel
Type:  Standard
Shape:  Taper Cut
Quantity:  1
Torque Specs: 
Cast Iron: 18-25.3 lb. ft.
Aluminum: 18-21.6 lb. ft.
Brand:  NGK
Heat Range:  9