2017-2026 L5P Duramax Up Pipe Bolt Kit

Bolts that will not seize or snap

The L5P uses small 8 mm factory fasteners to hold the up pipes to the exhaust manifolds and turbo pedestal. Wehrli says that in its development work it has often seen those bolts seize or break, even on new, low-mile trucks from rust-free areas.

This kit replaces them with 12 specially chosen high-strength ARP bolts, matched washers and a pack of ARP assembly lube, enough for both up pipes. It is a simple upgrade for stock or modified trucks that makes later service easier.

Who it's for

L5P owners, stock or modified, servicing or upgrading their up pipes.

Key specs (per Wehrli)

What's included

• 12 ARP bolts
• 12 washers
• ARP assembly lube

Fitment notes

• Fits 2017-2026 Chevrolet Silverado / GMC Sierra 2500 HD and 3500 HD with the 6.6L L5P Duramax.
• Torque to 24 ft-lb.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.