2004.5-2005 LLY Duramax DIY Headgasket Kit
Everything you need to tackle your headgaskets yourself at home. We used our years of experience to assemble what we consider a necessary list of parts to properly install headgaskets at home.
In this kit, you have the option to go with the head gasket alone if you've got gaskets from somewhere else. Or go for the full top-end kit, meaning you can freshen up the whole top end without having to shop around!
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Grade C Left Headgasket
This is a direct replacement gasket for your Duramax. Mahle (1.05mm) Headgaskets are build to meet or exceed OE specifications and are trusted by technicians all over the world.
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In this kit, you have the option to go with the head gasket alone if you've got gaskets from somewhere else. Or go for the full top-end kit, meaning you can freshen up the whole top end without having to shop around!
No Thanks

Grade C Right Headgasket
This is a direct replacement gasket for your Duramax. Mahle (1.05mm) Headgaskets are build to meet or exceed OE specifications and are trusted by technicians all over the world.
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Mahle Gasket sets take the hassle out of sourcing individual gaskets when replacing your headgasket on your Duramax Mahle gaskets are manufactured to meet or exceed OE specifications and are the technicians choice all over the world.
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Upper Engine Gasket Set
Features:
- Complete OE Gasket / Seal Kit
- Does not include Headgasket or Studs
- Meets or Exceeds OE Specifications
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Let's face it, nobody wants to be tearing apart their Duramax to do the headgasket and studs. It's expensive, meticulous, and time-consuming - so if you're already in there, make sure you do the job right with ARP Head Studs. ARP has continually proven themselves to be the only head stud you can trust.
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ARP Head Stud Kit
ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining.
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Aged 625 ARP Head Stud Kit
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