NOS Big Block Chevy Oil Pan Dipstick Mount 396 402 427 454This is a NOS piece that was in the factory while the oil pans were being made by General Motors. These mounts for the dipsticks were spot welded into the oil pan. You can see that these are NOS and the dimples for locating the spot weld are there. Fits all Chevrolet Big Block 396 427 454 502 engines. NOS Camaro Nova Chevelle Impala Caprice--If you are repairing an original rare oil pan from your car this is almost a must for a correct restoration. listing is for 1 - I have 10 available