Wehrli Custom Fabrication 100199 L5P Duramax Up Pipe Bolt Kit

The Wehrli Custom Fabrication 100199 Up Pipe Bolt Kit is a high-performance upgrade designed to replace the failure-prone factory fasteners on 2017-2025 GM 6.6L Duramax L5P engines. This comprehensive kit addresses a common weak point in these engines where the smaller 8mm OEM bolts are known to seize or break, even in brand-new, low-mileage vehicles operating in rust-free environments.

Key Features:

• 12 specially selected high-strength ARP fasteners for superior durability
• 12 matched ARP washers for proper load distribution
• Includes ARP assembly lube for easy installation and corrosion protection
• Direct replacement for factory 8mm OEM up pipe fasteners
• Secures up pipes to exhaust manifolds and turbocharger pedestal
• Complete kit for installing both driver and passenger side up pipes
• Recommended torque specification: 24 ft-lbs

This cost-effective upgrade provides peace of mind and significantly improves serviceability for both stock and modified diesel trucks. The high-strength ARP bolts resist seizure and breakage, ensuring your exhaust system connections remain secure and reliable. Made in the USA by Wehrli Custom Fabrication, this kit represents a simple yet essential upgrade for L5P Duramax owners who demand reliability and performance.