2004.5-2005 GM 2500HD/3500HD 6.6L LLY Duramax Glow Plugs

If one or more of the factory glow plugs on your 2004.5-2005 GM 6.6L Duramax has burned out, your engine will become progressively harder to start as temperatures begin to drop. When you start t notice it's not as easy to start your truck as it once was, it's best to stay ahead of the problem and replace the OEM glow plugs with a premium aftermarket upgrade. What's more, these glow plugs are a cost-effective upgrade for most diesel trucks, so we're confident you'll find exactly what you need, right here at Alligator Performance. 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.