Product Description
MBRP UA2007 is a universal aluminized-steel exhaust adapter that transitions between 3.5" and 4" plumbing for custom builds and repairs. One end is sized for 3.5" tubing and the other for 4", making it a handy reducer/expander when mixing components from different systems.
- Durable aluminized steel construction
- Universal use: fab work, repairs, system upgrades
- Smooth step transition to help maintain exhaust flow
- MBRP quality to match your existing MBRP system components
FITMENT
Universal—commonly used on diesel pickups and custom exhausts where a 3.5" connection must transition to 4". Verify pipe end type (slip vs. butt) and available length in your system before ordering.
CROSS-REFERENCE / ALTERNATIVES (MBRP ONLY)
- MBRP UA1007 (3.5" → 4" Stainless)
- MBRP UA2001 (4" → 5" Aluminized)
- MBRP UA2003 (3.5" → 5" Aluminized)
- MBRP UA2004 (4" ↔ 5" Aluminized)
- MBRP UA2005 (3.5" → 5" Aluminized)
- MBRP UA9001 (4" → 5" Stainless)
FAQ
Will UA2007 slip over my 3.5" pipe and connect to a 4" system?
Yes—UA2007 is designed for a 3.5" to 4" transition. Always check your specific end types (slip vs. butt) to ensure proper clamping or welding.
Is this adapter aluminized steel or stainless?
UA2007 is aluminized steel. If you need stainless in this size range, see the stainless option UA1007.
Does it come with clamps?
No—clamps are sold separately. Reuse existing hardware or select appropriate 3.5" and 4" clamps in your cart.
Can I weld this adapter?
Yes—it can be welded or clamped depending on your setup and preference.
Will this fit my specific Dodge/Ram, Duramax, or Power Stroke?
It’s a universal piece. Measure your current pipes and system layout to confirm the 3.5" to 4" transition is what you need.
