The GMT800 HD trucks were a massive step forward for GM's truck division. The available engines included the LS-based 6.0L, the big block 8.1L, and the line-topping 6.6L LB7, LLY, or LBZ Duramax diesel. Whether gas or diesel, we have the parts to take your truck to the next level on the street, worksite, or drag strip.

Good Looks, Excellent Quality, Perfect Fit, and Great Price. Whether you are looking to get your radiator hose in just the right direction or maybe you’re just wanting to dress up the ole’ engine, Weiand has you covered.