-original 1/2 x 14 N.P.T.F.-, V8, 300 & 340 C.I. Note: Requires a single 56... see more-original 1/2 x 14 N.P.T.F.-, V8, 300 & 340 C.I. Note: Requires a single 56 series female terminal connection
-original 1/2 x 14 N.P.T.F.-, V8, 400 C.I. Note: Requires a double 56 series female... see more-original 1/2 x 14 N.P.T.F.-, V8, 400 C.I. Note: Requires a double 56 series female terminal connection