2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Glow Plugs

If one or more of the factory glow plugs on your 2001-2004 GM 6.6L Duramax has burned out, your engine will become progressively harder to start as temperatures begin to drop. When you start to 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. Check out our selection of Turbo Upgrades to further your diesels performance!  GM Duramax Fitments: 2001, 2002, 2003, 2004 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.