M12X1.25X1/2" SPARK PLUG Helical Insert QTY-6 M12 x 1.25 x 1/2" spark plug helical insert qty-6 CHR88034 $7.500/ea
M12X1.25X3/4" SPARK PLUG Helical Insert QTY-6 M12 x 1.25 x 3/4" spark plug helical insert qty-6 CHR88036 $8.300/ea