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Dirty Hooker Diesel 01-04 GM LB7 6.6L Duramax DHD Stainless Steel Up Pipe Set - OE Length

Kit includes Gaskets and Hardware!
Stainless Duramax Up Pipe Set
Best FIT! Best Value!

These full featured OEM length up pipes are an excellent value! These are brand new and include all the high flow, high quality features your looking for at half of new GM LB7 up-pipes.

DHD has taken OEM replacement to a new level. This stock replacement up pipe set allows 53% greater flow than stock and is a direct bolt-on to your factory manifolds. Unlike factory parts, their up pipe is manufactured from 11 gauge 304 stainless steel and includes DHD's HD 304 stainless steel, internally-sleeved bellow that can take the abuse of high temperature and high pressures. Each up pipe outweighs the competition by nearly a pound and features internal and external flange TIG welds!


  • Inner and Outer TIG welded Steel Flanges (Not cast like competitor)
  • Stainless steel 11-gauge .120-inch wall, 2-inch OD Up-Pipe
  • Direct bolt-on replacement to factory exhaust manifolds 
  • Significant reduction in exhaust back-pressure
  • Lower exhaust temperatures 
  • Free-flowing stainless steel inner liner bellows

Kit Includes:

  • Stainless Multi-layer Up Pipe Gaskets (2 Upper, 2 Lower)
  • (12) 12PT Coated M10 12.9 Up-Pipe Bolts


  • 2001-2004 LB7 GM 6.6L Duramax 2500HD/3500HD

Compare to:

  • PPE 116120000

DHD: 300-124

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