Fel-Pro 61255 is a donut-style exhaust flange gasket built for the 4.2L L6 exhaust connection on GM midsize SUV platforms and related Isuzu and Saab applications from the 2002-2009 era. It helps seal imperfect flange surfaces to cut exhaust noise and leakage, using application-specific composite material with OE-style sizing for dependable service in real-world repairs.

Fel-Pro 61255 Technical Specifications:

• Composite donut-style construction is designed for exhaust pipe flange sealing where heat, movement, and imperfect mating surfaces can challenge a standard repair.
• Inside diameter measures 2.500 in. or 64 mm, outside diameter measures 3.4375 in. or 87 mm, and thickness measures 1 in. or 25 mm.
• Application-specific design meets or exceeds OE specifications for fit and sealing performance on the listed 4.2L L6 applications.
• Material is engineered to resist burning, shrinking, and leaking under demanding exhaust-system operation.

Use when replacing an exhaust flange gasket to address flange leakage, increased exhaust noise, or a compromised seal during exhaust service.

Fits 4.2L L6 applications including Buick Rainier, Chevy Trailblazer and Trailblazer EXT, GMC Envoy, Envoy XL, and Envoy XUV, Isuzu Ascender, Oldsmobile Bravada, and Saab 9-7x within the listed model years.