PPE 117000600 High-Flow 304 Stainless Steel Down Pipe 2011-2015 LML Duramax

The factory LML down pipe makes an abrupt directional change immediately after the turbine flange, which restricts exhaust flow and impedes performance. The indentations in the piping can further impede exhaust flow.

Upgrade your Duramax with the PPE Free-Flow Downpipe and eliminate the rusted, restrictive factory design. The PPE Down Pipe highlights unrestricted 3-inch diameter flow path all-along, fully machined and TIG welded upper and lower flanges, and three-inch 304 stainless steel piping. It ensures smooth transitions for unobstructed exhaust flow. To further enhance performance, it comes with a woven titanium sleeve that effectively insulates heat, protecting the engine bay.

Duramax High-Flow 304 Stainless Steel Down Pipe

Note: Only compatible with 2011-2015 LML trucks that uses a clamp at the connection to the exhaust pipe.

OEM P/N REFERENCE: GM 12643610

Features:
- 304 Stainless steel construction for durability and corrosion resistance
- Lower EGT, better turbo efficiency and response
- TIG welded flanges for leak-free, robust connections
- Smooth transitions and free-flowing design     
- Woven titanium heat sleeve
- Compatible with factory or PPE Up-Pipes
- Retains factory sensor/injection ports (2x M20-1.5 and 1x M14-1.5)