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Head Studs & Fasteners
ARP Valve Cover Bolt Kits are rated at 170,000 PSI tensile strength which is substantially stronger than grade 8 hardware. Offered for all Duramax engines these kits are offered in Hex or 12-Point Heads.
Features:
170,000 PSI Tensile Strength
Black Oxide Coating
Hex and 12-Point Heads Available
The ARP 129-2503 Balancer Bolt Kit for your 2001-2018 GM 6.6L Duramax is optimized for enhanced reliability and increased strength. Each kit includes Pro Series balancer bolts that are rated at 200,000 psi tensile strength, and 8740 parallel ground washers. ARP bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining and designed to exceed the OEM fasteners in strength and durability. Optimum design, enhanced reliability and increased strength are the main attributes of ARPs Pro Series balancer bolt kits.
Features:
Increased Strength
Increased Reliability
200,000 PSI Tensile Strength
The ARP 200-8793 Harmonic Balancer Washer for your 2001-2015 GM 6.6L Duramax is optimized for enhanced reliability and increased strength. Each 8740 parallel ground washer is cold forged to ensure molecular integrity, heat treated prior machining and designed to exceed the OEM hardware in strength and durability. Optimum design, enhanced reliability and increased strength are the main attributes of ARPs Pro Series balancer bolt kits.
Features:
Washer Only
Increased Strength
Increased Reliability
ARP Valve Cover Bolt Kits are rated at 170,000 PSI tensile strength which is substantially stronger than grade 8 hardware. Offered for all Duramax engines these kits are offered in Hex or 12-Point Heads.
Features:
170,000 PSI Tensile Strength
Rust-Free Stainless Steel
Hex and 12-Point Heads Available
The ARP Diesel Custom Age 625+ Head Stud Kit 230-4202 is the ultimate head stud kit for high horsepower 2001-2015 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 force required to keep cylinder heads from lifting due to exceptionally high combustion pressures and horsepower levels.
The studs are manufactured in ARPs Santa Paula, CA plant, with threads rolled after heat-treating to provide optimum fatigue strength. They are centerless ground to assure perfect concentricity. The ends of the studs are broached to acilitate easy installation. This feature also enables the cylinder head to be removed in tight quarters. Fits LB7, LLY, LBZ, LMM, LML engines.
Features:
ARP 625+ Material
260,000 PSI Tensile Strength
The ARP Diesel Head Stud Kit 230-4201 is a must have in any high performance 2001-2016 GM 6.6L Duramax. To overcome head gasket failures that can occur in diesel engines in these high performance applications, industry leader ARP has introduced extra heavy-duty head studs for the popular GM LB7, LLY, LBZ, LMM, LML Duramax powerplants. These ARP studs are rated at 220,000 psi tensile strength, and provide the clamping force required to keep cylinder heads from lifting due to higher combustion pressures.
The studs are manufactured in ARP's Santa Paula, CA plant from proprietary ARP 2000 material, with threads rolled after heat-treat to provide optimum fatigue strength. They are centerless ground to assure perfect concentricity. The ends of the studs are broached to facilitate easy installation. This feature also enables the cylinder head to be removed in tight quarters. Also included in each kit are heat-treated, chrome-moly steel 12-point nuts and parallel-ground washers. They are black oxide finished for extra durability.
Features:
ARP 2000 Material
220,000 PSI Tensile Strength
Chrome-moly Steel, 12-Point Nuts
Parallel-Ground Washers
The GM 11610681 Cylinder Head Bolt is an OE replacement for the factory installed head bolts in your 2001-2015 GM 6.6L Duramax.
The factory bolts are torque-to-yield and are not intended to be re-used. Bolts are sold individually. You will need 18 per side, 36 per engine.
Features:
OEM Replacement
Sold Individually