Original: $640.29
-70%$640.29
$192.09The Story
ARP Pro Series Head Stud Kit
For Chevy/GMC 6.6L Duramax Diesel (2001–Present)
Ensure your Duramax engine can handle the pressure. Whether you are rebuilding a classic LB7 or pushing high-boost numbers on a modern LLY, the factory head bolts are a known weak point. Under high combustion pressure, OEM bolts can stretch, leading to blown head gaskets and costly engine damage.
The ARP Pro Series Head Stud Kit is the industry standard for preventing cylinder head lifting and ensuring a permanent combustion seal.
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Key Features & Benefits
-
Superior Clamping Force: Unlike "torque-to-yield" factory bolts that permanently stretch during installation, these studs provide a much more consistent and higher clamping load.
-
Premium Material: Manufactured from 8740 chrome moly steel, heat-treated in-house to a tensile strength of 200,000 psi.
-
Precision Engineering: Threads are rolled after heat treatment, which gives them about 2000% (20x) better fatigue strength than studs with threads cut before heat treatment.
-
Ease of Maintenance: Using studs makes head installation much easier, as the studs help align the head and gasket perfectly every time.
-
Complete Kit: Includes all necessary heavy-duty ground washers, 12-point nuts, and ARP Ultra-Torque fastener assembly lubricant.
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Why Upgrade to ARP?
In a diesel engine, cylinder pressures are immense. When you add a tuner, larger injectors, or a bigger turbo, those pressures skyrocket. Factory bolts act like springs; they stretch, allowing the head to lift slightly off the block.
ARP studs do not stretch. By switching to a stud-and-nut configuration, you ensure that the head stays clamped tight against the block, even under extreme racing or heavy towing conditions.
Pro Tip: Always use the included ARP Ultra-Torque assembly lube during installation to ensure you achieve the correct preload and prevent "galling" during the torquing process.
Description
ARP Pro Series Head Stud Kit
For Chevy/GMC 6.6L Duramax Diesel (2001–Present)
Ensure your Duramax engine can handle the pressure. Whether you are rebuilding a classic LB7 or pushing high-boost numbers on a modern LLY, the factory head bolts are a known weak point. Under high combustion pressure, OEM bolts can stretch, leading to blown head gaskets and costly engine damage.
The ARP Pro Series Head Stud Kit is the industry standard for preventing cylinder head lifting and ensuring a permanent combustion seal.
Â
Key Features & Benefits
-
Superior Clamping Force: Unlike "torque-to-yield" factory bolts that permanently stretch during installation, these studs provide a much more consistent and higher clamping load.
-
Premium Material: Manufactured from 8740 chrome moly steel, heat-treated in-house to a tensile strength of 200,000 psi.
-
Precision Engineering: Threads are rolled after heat treatment, which gives them about 2000% (20x) better fatigue strength than studs with threads cut before heat treatment.
-
Ease of Maintenance: Using studs makes head installation much easier, as the studs help align the head and gasket perfectly every time.
-
Complete Kit: Includes all necessary heavy-duty ground washers, 12-point nuts, and ARP Ultra-Torque fastener assembly lubricant.
Â
Why Upgrade to ARP?
In a diesel engine, cylinder pressures are immense. When you add a tuner, larger injectors, or a bigger turbo, those pressures skyrocket. Factory bolts act like springs; they stretch, allowing the head to lift slightly off the block.
ARP studs do not stretch. By switching to a stud-and-nut configuration, you ensure that the head stays clamped tight against the block, even under extreme racing or heavy towing conditions.
Pro Tip: Always use the included ARP Ultra-Torque assembly lube during installation to ensure you achieve the correct preload and prevent "galling" during the torquing process.
