• 4.3L CARB ALPHA/BRAVO - 1A063240 & Up
• 4.3L MPI ALPHA/BRAVO - 0W658583 THRU 0W658583
• 4.3L MPI ALPHA/BRAVO - 1A030368 THRU 1A030369
• 4.3L MPI ALPHA/BRAVO - 1A063240 & Up