ARP Main Stud Kit

This is a complete ARP main stud kit for 1986–1987 Buick Grand National and Turbo Buick applications, designed to strengthen the bottom end by securely clamping the main caps to the block under high horsepower and boost conditions.

Included with the Kit:
Complete set of ARP main studs
Hardened washers
ARP nuts
ARP Ultra-Torque assembly lubricant

Here’s what’s not included with the kit (at this exact moment):
Main bearings
Installation tools

This kit gives you a serious foundation upgrade for your short block, helping maintain main cap alignment and crankshaft stability when power levels climb.

🟦 New Part – Engine Bottom End Upgrade (86–87 Turbo Buick)

Why You Want It
Because main cap movement kills blocks. Factory bolts stretch and lose clamping force once power and cylinder pressure increase. ARP main studs provide consistent, repeatable torque and superior clamping strength to keep your mains locked in place. This improves crankshaft stability, bearing life, and overall block integrity. If you’re building for boost or longevity, main studs are not optional — they’re cheap insurance that protects everything rotating inside your engine.

All parts are sold as-is with no returns, refunds, or exchanges. Buyer is responsible for verifying fitment for their specific application prior to purchase. Turbo 6 Parts makes no performance guarantees. All sales are final.