New National Seals Optispark seal for all 95-97 LT1 engines, aka "vented Optispark". This mounts in the timing cover, and is for the Optispark. Fits the following:
95-96 LT1/LT4 Corvette
95-97 LT1 Camaro Z28, SS
95-97 LT1 Firebird Formula, Trans Am, Firehawk
Late 94, 95-96 LT1 Impala SS