INSTALL INSTRUCTIONS MBRP GM8424 Instructions 3" Down Pipe, Chevy/GMC 6.6L Duramax 2004.5 - 2010 Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. While the search for more power for your LLY, LBZ or LMM Duramax powered vehicle usually leads you down the path of exhaust, intake and tuner, one item that is often overlooked is the factory restrictive turbo direct pipe. MBRP has addressed this restrictive component of the factory exhaust with our new turbo direct pipe replacement that mounts between your factory turbo and your exhaust system. Featuring full 16 gauge mandrel bent tubing for maximum flow, and an extremely durable high temperature ceramic coating, these pipes deepen the sound of your V8 diesel engine while lowering EGT's and providing quicker throttle response. Fits Mid to Late 2004-10 Models. LLY,LBZ,LMM Duramax engines.Not to be sold in California MBRP Warranty and Terms Installer Series: Three (3) Years warranty on Aluminized SteelXP Series: Lifetime warranty on 409 Stainless SteelPLM Series: Limited One (1) Year warrantyPro Series: Lifetime warranty on 304 Stainless SteelBlack Series: One (1) Year warranty on the coating and a three (3) Years Warranty on the exhaust componentsPerformance Series: Two (2) Years warranty on Aluminized Steel Powersports Sports Series: 1 Year WarrantyPerformance Series: 1 Year WarrantyTrail Series: 2 Year WarrantyRace Series: 2 Year Warranty Warranty Information: The MBRP Inc. warranty applies only to defects in material & workmanship of MBRP Inc. products to the original purchaser on record, providing that installation was completed on the original vehicle for which it was designed and tested for. MBRP Inc. will not warranty the cost of removal or re-installation of this product nor does the warranty apply if the product has been damaged by accident, abuse, misuse or misapplication. The sole obligation of MBRP Inc. will be to repair or replace at its discretion.