MBRP UA2005 3-1/2" OD TO 5" ID ALUMINIZED EXHAUST ADAPTER (UNIVERSAL)

MBRP UA2005 is a universal aluminized-steel exhaust adapter that transitions a 3.5" OD pipe to a 5" ID connection. Perfect for custom fab, mix-and-match systems, or replacing a worn reducer/expander in diesel truck exhausts.

• Size: 3.5" OD to 5" ID transition
• Material: Aluminized steel for solid durability
• Use: Universal—couplers, repairs, and custom exhaust work

Fitment

Universal fit. Works anywhere you need to adapt 3.5" OD tubing to a 5" ID connection across diesel pickups and custom systems. Verify your current pipe diameters (OD/ID) before ordering.

Cross-Reference / Alternatives (MBRP-Only)

• MBRP UA2003 — 3.5" ID to 5" OD (aluminized)
• MBRP UA2001 — 4" ID to 5" OD (aluminized)
• MBRP UA2004 — 4" ID to 5" ID (aluminized)
• MBRP UA2007 — 3.5" OD to 4" OD (aluminized)
• MBRP UA1007 — 3.5" ID to 4" OD (stainless)
• MBRP UA9004 — 4" ID to 5" ID (stainless)

Helpful Notes

• “OD” = Outer Diameter; “ID” = Inner Diameter. Match ends to your system correctly.
• Aluminized steel is durable, but stainless options (see UA9004, UA1007) resist corrosion longer in harsh climates.

FAQ

It’s a universal adapter. If one side of your connection is 3.5" OD tubing and the other side is a 5" ID component, UA2005 will physically adapt those sizes.

Aluminized steel—great balance of cost and durability. For maximum corrosion resistance, consider stainless alternatives listed above.

Use quality band or lap-joint clamps sized for your tubing to ensure a leak-free seal. Always check OD/ID before purchasing clamps.