Product Description
The MBRP UA2001 universal exhaust adapter transitions from 4" ID to 5" OD for clean, leak-free connections on custom and replacement exhaust work. Built from aluminized steel for budget-friendly durability, it’s a go-to piece for 4" systems stepping up to 5" tubing.
Fitment
- Universal use on trucks and custom exhaust projects requiring a 4" inner-diameter to 5" outer-diameter transition.
- Compatible with typical diesel platforms (Cummins, Duramax, Power Stroke) when sizes match your pipes and components.
- End types: slip/overlap fitment; verify clamp/weld style before installation.
Cross-Reference / Alternatives (MBRP Only)
- Stainless alternative: MBRP UA9001 (4" ID → 5" OD, T409 Stainless)
- Other sizes:
Helpful Notes
- Aluminized steel is a solid value choice; consider stainless (UA9001) for harsh climates or max corrosion resistance.
- Use proper 4" / 5" clamps or weld as needed. Check mating ends (slip vs. butt) to avoid leaks.
FAQ
Will UA2001 connect a 4" system to 5" tailpipe or tip?Yes—UA2001 is designed to step from a 4" inner-diameter pipe to a 5" outer-diameter pipe. Confirm your clamp/weld method before install.
Is UA2001 aluminized or stainless?
UA2001 is aluminized steel for budget-friendly durability. For stainless in the same size, see UA9001.
Does it include clamps?
Clamps are not included. Choose appropriate 4" and 5" clamps based on your connection style, or weld in place.
What vehicles does this fit?
Universal. If your exhaust uses 4" ID on one side and 5" OD on the other, UA2001 can bridge the sizes—common on many diesel truck upgrades.
