2001-2004 Duramax 2" Passenger Side Up-Pipe (031-1-HSP)

Upgrade your restrictive factory up-pipe and eliminate the dreaded cracked EGR bellow. Increase horsepower and torque, as well as, reduce your EGTs and increase spool up. Heavy wall 304 stainless steel tubing along with heavy-duty sleeved bellows allows you to push our up-pipe far beyond the capability of a factory up-pipe. 

Part Number: 031-1-HSP

• Increased Reliability
• Increased Power
• Lower EGT’s
• Increased Spool-up
• Stainless Steel Design
• Gaskets Included
• Heavy-Duty Sleeved Bellow

Includes:

• 1x 2" Stock Replacement Up-Pipe (Passenger)
• 1x Up-Pipe Gasket (Manifold)
• 1x Up-Pipe Gasket (Turbo)

• LB7: 01-04 VIN Code 1
• Engine code is dictated by the 8th character of the VIN number. The 10th character is the year of the truck.

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