2001-2007 Duramax 4" Downpipe (10111)

Fits

The Flo-Pro 4" Downpipe allows you to get rid of the restrictive OE downpipe on your 6.6L LB7, LLY, Or LBZ and replace it with a high-flow 4" pipe. With this downpipe, you can expect to see lower EGT's, increased performance, and improved flow!

Part Number: 10111

• Free Flowing 4" downpipe
• Utilizes OEM hangers
  
• No Bungs
• Reduces EGT's & Increases Mileage

Don't see your question? Ask us anything about this product.

• ?

  will it fit with a 4 inch mbrp straight pipe?

  It is designed to connect to a 4 exhaust system.

• ?

  Is it aluminized steel, or stainless steel

  Aluminized.

• ?

  Will this fit onto a stock 2005 lly duramax exhaust. And delete the cat and fit onto the stock 3.5” pipe from the down pipe

  No.

• ?

  Does this work with a stock turbo?

  Yes.

• ?

  Is this a downpipe from the turbo to cat? Based on the photo it looks like a pipe that replaces the catalytic converter ( between downpipe and cat-back exhaust ). Let me know, thanks

  You are correct! If you are looking to replace the downpipe off of the turbo, we have the PPE, DDC, and MBRP kits available.