Product Description
The ARP 247-4204 Head Stud Kit 625 Series is engineered for serious 5.9L and 6.7L Cummins performance builds that demand superior clamping strength under extreme cylinder pressure. Built from premium Custom Age 625+ material, this kit delivers substantially higher tensile strength than standard ARP 2000 fasteners, making it ideal for high-boost towing, competition, sled pulling, drag racing, and street performance applications.
Designed specifically for 1998.5-2024 Dodge Ram 5.9L and 6.7L Cummins 24V engines, the ARP 625 Series kit helps maintain head gasket integrity under elevated boost and combustion pressure where factory fasteners commonly fail.
FEATURES
- Custom Age 625+ material construction
- Higher tensile strength than ARP2000 studs
- Excellent head gasket retention under extreme boost
- Precision centerless-ground studs
- Heat-treated washers included
- Ideal for towing, racing, and high horsepower builds
- Reusable fastener design
- Designed for 24V 5.9L and 6.7L Cummins engines
FITMENT
- 1998.5-2002 Dodge Ram 2500/3500 5.9L Cummins 24V
- 2003-2007 Dodge Ram 2500/3500 5.9L Cummins
- 2007.5-2024 Ram 2500/3500 6.7L Cummins
WHAT'S INCLUDED
- ARP Custom Age 625+ head studs
- ARP nuts
- Hardened washers
- ARP Ultra-Torque fastener lubricant
- Installation instructions
CROSS-REFERENCE & RELATED PRODUCTS
- ARP 247-4202 Cummins Head Stud Kit
- Cummins OEM Head Gasket
- Fleece Performance Cooling Products
- Hamilton Cams Valve Train Components
WHY UPGRADE TO ARP 625 HEAD STUDS?
High-performance Cummins engines running upgraded turbochargers, aggressive tuning, nitrous, or heavy towing loads generate substantially more cylinder pressure than stock hardware was designed to handle. ARP 625 studs provide superior clamping force and fatigue resistance to help prevent blown head gaskets and cylinder head lift under extreme operating conditions.
SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | ARP |
| Part Number | 247-4204 |
| Material | Custom Age 625+ |
| Engine Compatibility | 5.9L & 6.7L Cummins 24V |
| Application | Performance, towing, racing, high boost |
| UPC | 672036046777 |
FAQ
What makes ARP 625 studs better than ARP2000?
Custom Age 625+ material offers substantially greater tensile strength and fatigue resistance than ARP2000 hardware, making it ideal for extreme horsepower and boost applications.
Are ARP 625 studs required for high horsepower Cummins builds?
For aggressive tuning, upgraded turbochargers, competition use, or heavy towing under elevated boost pressure, ARP 625 studs are strongly recommended to maintain head gasket sealing.
Can these studs be reused?
Yes. ARP head studs are reusable when properly inspected and installed according to ARP specifications.
Will this fit both 5.9L and 6.7L Cummins engines?
Yes. This kit is designed for 1998.5-2024 24-valve 5.9L and 6.7L Cummins applications.
