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The Gibson single-exit cat-back exhaust for 2007–2010 Hummer H3 (3.7L) offers a straight-back polished stainless tip and aluminized mandrel-bent tubing for durability. It installs with included hardware and factory-style hangers for a bolt-on fit, with a baffled/chambered muffler to keep interior drone minimal. Drivers typically see 5–10 horsepower gains while retaining a refined exhaust note.
Gibson 07-10 Hummer H3 Base 3.7L 2.5in Cat-Back Single Exhaust - Aluminized
