4-bolt flat exhaust flange for 3.50" OD tubing, cut from .375" (3/8") mild steel. This is the flange used at the downpipe connection on 2017-and-newer Chevy/GMC 6.6L Duramax L5P trucks, so it's the one you need for L5P downpipes, delete pipes and custom diesel exhaust. Weld it on to make a bolt-together joint.
- Fits tube OD: 3.50"
- Style: 4-bolt flat
- Common use: 2017+ Chevy/GMC Duramax L5P downpipe connection
- Material: mild steel
- Thickness: .375" (3/8")
- Center opening: 3.60"
- Bolt holes: (4) 0.52" (for 1/2" bolts)
- Bolt spacing: 4.36" x 2.57" center to center
- Overall size: 5.32" x 4.75"
Check the dimension drawing to confirm it matches your mating flange. Uncoated mild steel is easy to weld; paint or coat it for rust protection.
Need more than we show in stock? Call 541-330-5931 for bulk pricing and availability.