2001-2016 Duramax Custom Age 625+ Head Stud Kit (230-4202)2001 2016 Duramax Custom Age 625+ Head Stud Kit (230 4202) The ARP Diesel Custom Age 625+ Head Stud Kit 230 4202 is the ultimate head stud kit for high horsepower 2001 2016 GM 6. 6L Duramax engines. ARP has provided an extra measure of security in the form of extra strong head studs manufactured from the firm's proprietary Custom Age 625+ material that has a minimum rating of 260,000 psi tensile strength. They are engineered to provide the clamping

Whether you're looking to restore your engine's performance or upgrade to a more powerful setup

Standard • HO (High Output) • NON HO (Non High Output)

Comes with all latest revisions

ARP uses a premium grade 8740 alloy that is rated far superior to 'aircraft' quality

9L Mahle Set of 6 Pistons w/ Rings - Standard (224-3354WR)

Dodge 89-93 First Gen Injector Set: With proper supporting modifications injectors will support up to 350 RWHP

Some light idle haze may be present and depending on the modifications to the vehicle

Cooler EGT's

This can be hard on a turbo and motor and is not recommended

This is our go-to EGR delete for the 2017-2019 Ford 6

9L Nozzle Set: Stage 1

This socket takes a standard 1/2-inch drive or a 1 1/4-inch (32mm) socket