Autolite Platinum Spark Plugs Are An Ideal Upgrade For Vehicles Originally Equipped With Copper Spark Plugs;
For Use In Vehicles Originally Equipped With Platinum Spark Plugs;
Platinum Spark Plugs Provide Better Performance And More Durability - When Compared To Copper Spark Plugs; Provide Optimal Engine Performance And Fuel Efficiency When Compared To Copper Spark PlugsBR>Spark Plug Hex Size: 13/16 in.
Spark Plug Reach: .468 in.
Spark Plug Seat Type: Tapered
Spark Plug Thread Size: 18 mm