Genuine Champion replacement part. Thread Size: 14mm, Seat Type: Gasket, Resistor Type: Inductive, Reach: 19mm (3/4"). Hex Size: 5/8" (16mm), Terminal Type: Solid, Gap:.028" (0.7mm). Material: Platinum, Type: Standard, Size: 2.0mm, Projection: Extended Projection. Platinum tipped center electrode and platinum pad on ground electrode provide long life and minimal wear.