Gator Fasteners Heavy Duty Up-Pipe Bolt Kit for Chevy/GMC (2001-16) 6.6L Duramax Diesel

Upgrade your 2001–2016 Chevy/GMC 6.6L Duramax Diesel (LB7, LLY, LBZ, LMM, LML) with the Gator Fasteners HD220 Heavy Duty Up-Pipe Bolt Kit (UPBK66L5P). Manufactured from Gator’s exclusive HD220 alloy, these bolts deliver an industry-leading 220,000+ PSI tensile strength-far surpassing standard OE hardware as well as 10.9, 12.9, and 8740 Chromoly. This ensures your up-pipe connections remain secure and leak-free, even under the extreme heat, vibration, and thermal cycling of diesel engines.

This comprehensive kit includes all the bolts required for both the up-pipe to exhaust manifold and the up-pipe to turbo connections, providing a complete hardware solution for exhaust upgrades or repairs. The corrosion-resistant black oxide finish ensures long-lasting protection against rust and exhaust byproducts, while precision machining guarantees a perfect fit every time.

Vehicle Compatibility: Fits 2001–2016 Chevy Silverado and GMC Sierra 2500/3500 HD trucks equipped with the 6.6L Duramax Diesel engine (LB7, LLY, LBZ, LMM, LML).

• HD220 High-Strength Material – Proprietary alloy delivers 220,000+ PSI tensile strength, far exceeding OE hardware as well as standard 10.9/12.9 and 8740 Chromoly
• Complete Up-Pipe Hardware – Includes all bolts needed for both up-pipe to exhaust manifold and up-pipe to turbo connections
• Engineered for Duramax Generations – Direct fit for 2001–2016 LB7, LLY, LBZ, LMM, and LML 6.6L Duramax engines
• Corrosion Resistant – Black oxide finish protects against rust and exhaust byproducts
• Long-Lasting Performance – Maintains a secure, leak-free seal under high heat, vibration, and thermal cycling
• Gator Fasteners Quality – Backed by Gator Fasteners’ commitment to premium strength and reliability – Nothing Bites Like Gator