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Home > ARP > ARP Chevy Main Stud Kit
ARP main stud kit 250-5801
free shipping special with no handling fees
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ARP Chevy Main Stud Kit

01-05 6.6L Duramax (LB7/LLY)
06-10 6.6L Duramax (LBZ/LMM)
Oldsmobile 5.7L, 350 cid

There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 2000% stronger than others.
Package Deals
Product Description
Price Order
01-05 Duramax 6.6L LB7/LLY
Mfg # 230-5401
free shipping special with no handling fees
06-10 Duramax 6.6L LBZ/LMM
Mfg # 230-5402
free shipping special with no handling fees
Oldsmobile 5.7L, 350 cid
Mfg # 184-5402
free shipping special with no handling fees
ARP recommends the use of main studs over bolts whenever possible for several key reasons. First is the ability to obtain more accurate torque readings because studs don't "twist" into the block. All clamping forces are on one axis. By the same token, there is less force exerted on the block threads, which contributes to improved block life (very critical on aluminum blocks). Finally, there are factors of easier engine assembly and proper alignment of caps every time.
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