DieselSite 6.2 & 6.5 GM Heavy Duty Main Stud Kit | 1983-2000 GM 6.2L / 6.5L

The Heath Heavy Duty Main Stud Kit replaces all 20 main bearing cap bolts with studs. It fits 1997 and earlier 6.5L turbo engines, and 6.2L engines.

For 1997.5 and later vehicles you will want to double check your block casting number to see if its still a 506 block. If it is a 506 block, you need our 506 specific main stud kit. This kit includes 6 10mm studs to replace the bolts in the 506 blocks.

This main stud kit greatly reduces the chances of cracking in the main webbing due to stress risers caused by the bolts, these studs are a must for anyone wanting to make big horsepower numbers. We strongly recommend if you are rebuilding an engine to install these studs in the process.