AC Fire Ring 44XLS spark plug 5612406 GM green ring vintage NOS

AC 44XLS Spark Plug NOS

NOS AC 44XLS Spark Plug. Acquired from a closed dealership. See pic.

R45S AC Automotive Spark Plug Made In USA Quantity 1 Piece R45S

NOS AC Fire Ring Spark Plug. 44XLS. SP400.

NOS AC Fire Ring Spark Plug (1) #44XLS, Circa 1970

R84TS AC GM Automotive Spark Plug Quantity 1 Piece Made In USA R84TS

46N AC GM Fire Ring Automotive Spark Plug Made In USA AC 46N