Looking for a high-quality replacement for your Duramax cylinder head bolts? Look no further than the Mahle GS33504 Cylinder Head Bolts. These bolts are made to meet or exceed OE specs, and come with a 1 year limited warranty. That means you can be confident that they'll hold up under pressure. Plus, the set includes 18 bolts, so you'll have everything you need to get the job done right.