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Motivated by the desire to always offer the best in an ever-evolving aftermarket, MagnaFlow has stayed at the cutting edge for 30 years and now offers hard-hitting performance gains and improved exhaust sound with its 2007-2018 exhaust systems. Confidence in their components’ quality leads MagnaFlow to provide a lifetime warranty on all their exhaust systems. 409 or in some cases 304 stainless steel is the material of choice for MagnaFlow’s 2007-2013 cat-back exhausts, in order to prevent rust-through and extending the life of the exhaust system. Generating a throaty, loud rumble of exhaust sound on the exterior without making the interior overly noisy, the company’s 2014-2018 cat-back exhaust systems (and those of other years) feature mandrel bent tubing and other construction details intended to hasten exhaust fumes’ departure from the engine system and thus a sizzling boost to horsepower, torque, and fuel mileage. These are all-American products, too, engineered and manufactured in the USA.

Fitment Includes

  • Classic, Nevada Edition, SL, Z71, Denali, SLE, 1500, and SLT Sierras
  • Engines: 4.3L Vortec V6, 4.8L Vortec V8, 5.3L Vortec V8, 5.3L Flex-Fuel Vortec V8 6.2L VVT Vortec V8, 4.3L EcoTec3 V6, 5.3L EcoTec3 V8, 6.2L EcoTec3 V8 Sierras

*Please see Sierra parts pages for any exceptions.

MagnaFlow Sierra Parts

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