Product Description
MBRP UA9001 is a universal 7-inch adapter that transitions a 4" ID pipe to a 5" OD pipe. Built from T409 stainless steel for corrosion resistance and durability, it’s ideal for custom exhaust work on diesel trucks and performance builds.
- Material: T409 stainless steel
- Size: 4" Inner Diameter (ID) to 5" Outer Diameter (OD)
- Length: ~7"
- Use: Universal—couplers, transitions, custom exhaust fab
Fitment
Universal fit for vehicles requiring a 4" ID to 5" OD transition. Verify measured pipe sizes (ID vs. OD) before ordering to ensure proper slip fitment in your system.
Cross-Reference / Alternatives (MBRP Only)
- MBRP UA2001 — 4" ID to 5" OD (Aluminized)
- MBRP UA2004 — 4" ID to 5" ID (Aluminized)
- MBRP UA1007 — 3.5" ID to 4" OD (Stainless)
- MBRP UA2003 — 3.5" ID to 5" OD (Aluminized)
- MBRP UA2005 — 3.5" OD to 5" ID (Aluminized)
- MBRP UA2007 — 3.5" ID to 4" OD (Aluminized)
Helpful Notes
- “ID” slides over pipe; “OD” slides into the next component—measure carefully.
- Use quality clamps or welds for a leak-free seal.
FAQ
Is UA9001 stainless or aluminized?
UA9001 is T409 stainless steel for enhanced corrosion resistance.
Will this fit my truck?
It’s universal. If your system needs a 4" ID to 5" OD transition and has room for a ~7" adapter, it will work.
Do I need clamps or welding?
Either works. For serviceability, use high-quality band clamps; for permanent installs, weld for best seal.
What’s the difference between 5" OD and 5" ID adapters?
OD adapters fit into 5" ID components; ID adapters slide over 5" OD pipe. Choose based on the parts you’re connecting.
