ARP Head Studs (ARP230-4201) for 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
$879.15
The ARP230-4201 head stud kit is designed for 2001–2016 Duramax engines, including LB7, LLY, LBZ, LMM, and LML platforms. Manufactured from premium 8740 alloy steel, these studs provide superior clamping force and durability compared to factory head bolts. The precision heat treatment and rolled thread design improve fatigue strength and reliability. This kit helps prevent head lift and maintain head gasket sealing in high-horsepower Duramax engines.
ARP Head Studs ARP230-4201 for Duramax
The ARP Head Stud Kit ARP230-4201 provides a stronger head fastening solution for 2001–2016 GM 6.6L Duramax engines. This kit fits LB7, LLY, LBZ, LMM, and LML platforms. Many engine builders choose this kit when increasing boost pressure or horsepower. Stronger studs help keep the cylinder heads sealed under heavy load.
Factory head bolts can stretch when cylinder pressure rises. When this happens, the head gasket can fail. The ARP230-4201 head studs provide much stronger clamping force. As a result, the cylinder heads stay secured even under extreme conditions.
High Strength 8740 Alloy
ARP manufactures these studs from premium 8740 chrome moly alloy steel. This material offers excellent strength and durability. It performs well in high horsepower diesel engines.
Each stud goes through a controlled heat treatment process. ARP performs this process in a vertical fixture. This method ensures consistent heat penetration through the entire stud.
Precision Manufacturing
ARP machines every stud with strict tolerances. After heat treatment, ARP centerless grinds the studs for accurate alignment.
ARP then rolls the threads instead of cutting them. Rolled threads improve metal grain structure and increase durability. This process produces significantly higher fatigue strength compared to conventional fasteners.
Built for Performance Duramax Engines
Performance Duramax engines create high cylinder pressure. Strong head fasteners help prevent head lift and gasket failure.
The ARP Duramax head studs work well in engines with upgraded turbos, increased boost, or custom tuning. Many diesel builders install these studs during engine rebuilds or performance upgrades.
Key Features
Designed for 2001–2016 Duramax LB7, LLY, LBZ, LMM, and LML engines
Manufactured from premium 8740 chrome moly alloy steel
Stronger clamping force compared to factory head bolts
Vertical heat treatment process for consistent strength
Centerless ground for precise alignment
Rolled threads improve fatigue strength and durability
Helps prevent head lift under high cylinder pressure
Popular upgrade for performance and towing Duramax builds
Fitment
2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
Features
- No better cylinder head studs available at any cost
- 8740 alloy is rated better than aircraft quality
- All ARP studs are heat treated and feature rolled threads
- Studs make gasket and cylinder head alignment a snap
- Used by top professional engine builders in all forms of racing
- Need More Lube? – 01-16 Duramax Head Stud & Lube Combo
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