GMC Sierra 2500 Valve Seal Set - COMP Cams - Viton, 7mm Valves, 0.426 Inch Guide Diameter - `01-`05
GMC Sierra 2500 Valve Seal Set - COMP Cams - Viton, 7mm Valves, 0.426 Inch Guide Diameter - `01-`05
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GMC Sierra 2500 Valve Seal Set by COMP Cams — Viton, 7 mm valves, 0.426 in guide diameter (2001–2005). A complete set of 32 valve stem oil seals engineered for precise oil control on your 6.6L Duramax.
Viton construction resists heat, fuel, and oil, while positive sealing on 7 mm stems and 0.426 in guides helps cut oil consumption and carbon. Built for turbo-diesel duty, they promote clean chambers and consistent valvetrain control. Direct fit for 2001–2005 GM 6.6L Duramax in Sierra 2500/3500 when the guide size matches.
Features
- 2001–2005 GM 6.6L Duramax (Sierra 2500/3500)
- 7 mm valve stems; 0.426 in guide diameter
- Durable Viton material
- Set of 32, COMP Cams
- Aims to reduce oil use and deposits
Need help with compatibility or installation? Call us. We provide installation and customization at our Austin, Texas and Los Angeles, California area locations. Texas: 512-982-9393. California: 562-981-6800.
Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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