Reinforce Your Bottom End with Unmatched Strength The Gator Fasteners Heavy Duty Main Stud Kit (MSK6265) is engineered to provide maximum strength and reliability for your Chevy/GMC 6.2L & 6.5L Diesel engine (1982-97).

Whether you're towing, hauling, or pushing high performance, this kit reinforces your main bearing caps, reducing the risk of main webbing cracks and ensuring long-term durability under extreme conditions.
Compatibility Note:
Fits 1997 and earlier 6.5L turbo, 6.5L non-turbo, and 6.2L engines.

• For 1997.5 and later engines, check your block casting number. If it's a 599 block, this kit will work. Does not fit 506 blocks, which require (6) 10mm studs.
• Upgrade with Confidence
• Designed for those who demand maximum durability and performance, the Gator Fasteners MSK6265 is a must-have for any 6.2L or 6.5L diesel rebuild. Protect your bottom end and eliminate weak points before they become a problem.

Because Nothing Bites Like Gator!

• HD220 Material - Higher strength and durability compared to standard 8740 Chromoly used by competitors.
• 220,000 PSI Tensile Strength - Provides superior clamping force to keep the bottom end secure.
• Reinforces Main Caps - Reduces the chances of main webbing cracks, ensuring long-term reliability.
• Precision Machined & Heat Treated - Guarantees an exact fit and maximum performance.
• Corrosion Resistant - Built to withstand harsh environments and extreme operating conditions.
• Straightforward Installation - Designed for an easy install while ensuring a perfect fit.
• Rolled Threads After Heat Treating - Increases strength and fatigue resistance for maximum durability.

What's Included?

• (20) 12mm Studs
• (20) 12mm 12-Point Nuts
• (20) 12mm Washers