ARP230-4201 Diesel Head Stud Kit for 01-16 Chevy / GMC
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Select your truck to continue
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from ARP Bolts
Upgrade your 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML with an ARP Diesel Head Stud Kit 230-4201 from XDP. It’s a proven fact that OEM head bolts are the weak link in a diesel engine; especially if the engine has been modified. That’s because most engines are typically assembled from the factory using Torque-To-Yield (TTY) bolts and preloaded to yield and beyond (typically 100-110%). Any increases in combustion pressure can lead to problems like blown head gaskets or catastrophic engine failure. Furthermore, because TTY bolts are yielded by design, they should never be re-used. ARP is the industry leader when it comes to fasteners and offers heavy-duty head studs for a wide variety of popular diesel applications. Using head studs instead of standard head bolts provides your engine with the clamping force required to keep your cylinder heads from lifting and blowing a head gasket due to higher combustion pressures. For the 230-4201 Head Studs, ARP starts with a premium grade ARP2000 alloy that is rated far superior to aircraft quality alloy steels. ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than Chrome Moly 8740. While 8740 and ARP2000 share similar characteristics, ARP2000 is capable of achieving a higher clamp load at 220,000 psi.Each stud is placed vertically into special racks and precisely heat-treated. This procedure ensures complete heat penetration and is far superior to those lower quality studs from other manufacturers who just drop pieces in a basket. ARP head studs then begin a centerless grinding process to ensure that they are perfectly concentric. As many as ten separate machining steps are required to achieve this level of accuracy. The thread rolling operation is also done after the heat-treatment, which gives them about 2000% (that’s 20 times) better fatigue strength than lesser studs that are threaded prior to heat-treat. It costs a lot more to do it this way, because it’s tough on tooling, but the results are worth the additional effort. Fasteners are then shot-peened to remove any surface irregularities and upgrade the overall external integrity. Finally, a metal finishing process is also performed in-house with a durable black oxide coating applied for improved corrosion resistance.There is a good reason that virtually every top professional engine builder relies on ARP head studs for their all-out competition powerplants. Simply put, there’s not a better stud setup on the market today. This head stud kit is a direct-fit for the 6.6L Duramax LB7/LLY/LBZ/LMM/LML engines found in Chevy Silverado and GMC Sierra 2500HD/3500HD pickup trucks and Express/Savana vans.
Features:
Proprietary ARP 2000 MaterialRated At 220,000 Psi Tensile Strength
Includes Chrome Moly Steel 12-Point NutsBlack Oxide Coating For Improved Corrosion ResistanceCenterless Ground To Ensure They Are Perfectly ConcentricImproved Clamping Force Prevents Cylinder Heads From LiftingBroached Stud Ends Install & Make Cylinder Head Removal EasierHeat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue StrengthShot-Peened To Remove Any Surface Irregularities And Upgrade The Overall External IntegrityHardened Parallel Ground Washers For An Even Load Distribution And More Accurate Torque ReadingsComes With 0.5oz Of ARP Fastener Assembly LubricantXDP Thread Cleaning Chasers (Sold Separately):The XDP Thread Cleaning Chasers XD40124TC & XD40128TC are an excellent add-on for the seasoned technician, or the at-home mechanic. Using Thread Cleaning Chasers ensures that you are able to properly clean the threads in your engine block before the installation of this head stud kit. Clean threads will provide you with accurate torque readings which are critical to your head gasket repair, or engine build.
Upgrade your 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML with an ARP Diesel Head Stud Kit 230-4201 from XDP. It’s a proven fact that OEM head bolts are the weak link in a diesel engine; especially if the engine has been modified. That’s because most engines are typically assembled from the factory using Torque-To-Yield (TTY) bolts and preloaded to yield and beyond (typically 100-110%). Any increases in combustion pressure can lead to problems like blown head gaskets or catastrophic engine failure. Furthermore, because TTY bolts are yielded by design, they should never be re-used. ARP is the industry leader when it comes to fasteners and offers heavy-duty head studs for a wide variety of popular diesel applications. Using head studs instead of standard head bolts provides your engine with the clamping force required to keep your cylinder heads from lifting and blowing a head gasket due to higher combustion pressures. For the 230-4201 Head Studs, ARP starts with a premium grade ARP2000 alloy that is rated far superior to aircraft quality alloy steels. ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than Chrome Moly 8740. While 8740 and ARP2000 share similar characteristics, ARP2000 is capable of achieving a higher clamp load at 220,000 psi.Each stud is placed vertically into special racks and precisely heat-treated. This procedure ensures complete heat penetration and is far superior to those lower quality studs from other manufacturers who just drop pieces in a basket. ARP head studs then begin a centerless grinding process to ensure that they are perfectly concentric. As many as ten separate machining steps are required to achieve this level of accuracy. The thread rolling operation is also done after the heat-treatment, which gives them about 2000% (that’s 20 times) better fatigue strength than lesser studs that are threaded prior to heat-treat. It costs a lot more to do it this way, because it’s tough on tooling, but the results are worth the additional effort. Fasteners are then shot-peened to remove any surface irregularities and upgrade the overall external integrity. Finally, a metal finishing process is also performed in-house with a durable black oxide coating applied for improved corrosion resistance.There is a good reason that virtually every top professional engine builder relies on ARP head studs for their all-out competition powerplants. Simply put, there’s not a better stud setup on the market today. This head stud kit is a direct-fit for the 6.6L Duramax LB7/LLY/LBZ/LMM/LML engines found in Chevy Silverado and GMC Sierra 2500HD/3500HD pickup trucks and Express/Savana vans.
Features:
Proprietary ARP 2000 MaterialRated At 220,000 Psi Tensile Strength
Includes Chrome Moly Steel 12-Point NutsBlack Oxide Coating For Improved Corrosion ResistanceCenterless Ground To Ensure They Are Perfectly ConcentricImproved Clamping Force Prevents Cylinder Heads From LiftingBroached Stud Ends Install & Make Cylinder Head Removal EasierHeat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue StrengthShot-Peened To Remove Any Surface Irregularities And Upgrade The Overall External IntegrityHardened Parallel Ground Washers For An Even Load Distribution And More Accurate Torque ReadingsComes With 0.5oz Of ARP Fastener Assembly LubricantXDP Thread Cleaning Chasers (Sold Separately):The XDP Thread Cleaning Chasers XD40124TC & XD40128TC are an excellent add-on for the seasoned technician, or the at-home mechanic. Using Thread Cleaning Chasers ensures that you are able to properly clean the threads in your engine block before the installation of this head stud kit. Clean threads will provide you with accurate torque readings which are critical to your head gasket repair, or engine build.
HSP offers a limited lifetime warranty to the original purchaser on eligible HSP products. Underhood powder coating has separate two-year limited coverage. Non-HSP brands follow their own manufacturer warranties. Discontinued products and customer/installer damage are excluded. Claim authorization is required; customer pays inbound shipping for ordinary claims.
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
HSP Diesel warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what HSP Diesel offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Professional installation is recommended.
- Return eligibility
- HSP states returns must be postmarked within 30 days of purchase, new and unused with original tags and packaging, with an approved RMA. A 15% restocking fee and customer-paid return shipping apply. Special orders, non-HSP dropship products, apparel, used items and custom colors are excluded. Based on what HSP Diesel offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- HSP Diesel
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- HSP Diesel
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.