Description: This BD 1043800 up - pipes kit is a great fit for 2001 - 2004 GMC/Chevrolet vehicles with 6.6L Duramax engines. It replaces the factory exhaust up - pipes that often leak due to deterioration. These BD up - pipes are designed to reduce turbo restriction with internally shielded expansion bellows. They're a long - lasting solution to a common problem and are ideal for upgrades during engine or transmission repairs. Part Number: 1043800. Features: 304 stainless steel precision cast mounting flanges prevent exhaust tubing blowouts and ensure a perfect fit. 304L 2 - inch stainless tubing retains heat energy and won't corrode like other types of steel. The internally shielded 304 stainless bellows are a great addition. It boosts turbo response and lowers EGTs. Note that you need an aftermarket downpipe as it doesn't work with the OE downpipe.

Using this up - pipes kit is straightforward. First, make sure you have an aftermarket downpipe as the kit won't fit with the original one. When installing, follow the general exhaust system installation steps for your 2001 - 2004 GMC/Chevrolet with a 6.6L Duramax engine. As for maintenance, check the mounting flanges regularly to ensure they're tight and there are no signs of exhaust leakage. The stainless steel construction is durable, but keep an eye out for any external damage. If you notice any issues like unusual noises or decreased performance, it might be time to inspect the kit thoroughly.