Denso Platinum TT spark plugs feature a twin-tip design, allowing for a more efficient combustion, which yields better engine performance in terms of power and fuel economy. 1.1mm platinum tipped center electrode and titanium-enhanced 1.1mm ground electrode. Machine rolled threads prevent seizing or cross threading during installation and removal. 100% pre-fired to assure the highest quality possible. Purified alumina powder insulator provides exceptional strength and thermal conductivity. Five rib insulator prevents flashover. Copper-glass seal bonds center electrode and insulator for a gas-tight seal.

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 19mm (3/4")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .039" (1.0mm)
Center Electrode Material: Platinum
Type: Fine Wire
Size: 1.1mm
Projection: Projected
Ground Electrode Material: Titanium
Type: Fine Wire
Quantity: 1 box

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 16

Torque Specs
Cast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft.