Denso W16PR-U 3037 Spark Plug Standard Replaces 067700-2921
Denso W16EP-U 3018 Spark Plug Standard Replaces 067600-7231
4275 by AUTOLITE - Copper Non-Resistor Spark Plug
Denso 3036 W16P-U Nickel U-Groove Spark Plug
4275 by AUTOLITE - Copper Non-Resistor Spark Plug
Original U-Groove