Genuine Denso 4503 PK16TT Platinum Titanium TT Spark Plug 4 Pack

Specifications:
Thread Pitch: 1.25mm
Seat Type: Gasket
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .039" (1.0mm)
Electrode Material: Platinum
Ground Electrode Tip Design: Titanium Enhanced Twin-Tip
Ground Electrode Quantity: 1
Insulator Type: Projected
Material: Nickel
Nominal Gap: 1 mm
Spark Plug Reach: 19 mm
Wrench Diameter: 16 mm
Thread Diameter: 14 mm
Heat Range: 16
Seat Type: Flat