2004.5-2005 GM 2500HD/3500HD 6.6L LLY Duramax Exhaust Brakes

Heavy hauling in your 2004.5-2005 GM 6.6L Duramax LLY means it's going to take a lot more time and distance to get your truck to a complete stop. In order to greatly shorten your truck's overall braking distance, pick up one of the premium exhaust brakes we offer right here at Alligator Performance! With an exhaust brake installed, your Sierra or Silverado 2500/3500HD will experience controlled downhill speed, reduced brake heat and wear, and less stress on your truck's factory braking system for a better overall driving experience on a day-to-day basis. GM Duramax Fitments: 2004, 2005 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.