Replace the restrictive crushed factory turbo down pipe / exhaust front pipe on the 6.6L Duramax Diesel V8 found in the 2004.5 - 2010 Chevrolet Silverado / GMC Sierra 2500 / 3500 HD truck with this high flow, heat wrapped, full 3" Stainless steel down pipe. For use with OEM or factory style drop in turbocharger. No tuning required. - - Replaces the following GM Part Numbers: 98050150
