NGK3951 NGK V-Power Spark Plug Heat Range 5 -TR55-

NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching.

• 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 Diameter: 14 mm
Shell Thread Pitch: 1.25 mm
Shell Seat Type: Tapered
Shell Reach: 18 mm(0.709 in)
Shell Hex Size: 5/8 in(16 mm)
Shell Terminal Type: Solid
Shell Overall Height: ISO
Shell Gap: 0.059 in(1.5 mm)
Center Electrode Material: Nickel
Center Electrode Type: V-Cut
Center Electrode Size: 2.5 mm
Center Electrode Projection: Projected
Ground Electrode Material: Nickel
Ground Electrode Type: Standard
Ground Electrode Shape: Taper Cut
Ground Electrode Quantity: 1
Resistor: Yes
Resistor Value: 5 kohm
Heat Range: 5
Torque Specs: Cast Iron: 10.8-18 lb-ft, Aluminum: 7.2-14.5 lb-ft
Longevity: 30 kmile
Fitment: Automotive
Warranty: 60 days