This is for a brand new set of TWO (2) Autolite XST4265 Xtreme Start Iridium Enhanced Spark Plugs
Includes (2) XST4265DP Spark Plugs. Thread Size: 14mm, Thread Pitch: 1.25mm, Seat Type: Gasket, Reach: 19mm (3/4"). Hex Size: 13/16" (21mm), Terminal Type: Removable Nut. Material: Iridium-Platinum, Type: Fine Wire, Size: 0.6mm, Projection: Non-Projected. Iridium and platinum electrodes provide the durability of double platinum plugs with virtually no gap erosion, longer life, and top fuel efficiency over the life of the plug. Fine wire electrodes provide increased ignitability. .
Replaces: Champion: RN12YC, 8810, 8812 and NGK: GR4, GR4VX