Product Description
The ARP 247-4205 Head Stud Set 625 Series is the premium fastener upgrade for 1994-1998 Dodge Ram 5.9L Cummins 12V engines that demand maximum head gasket sealing under extreme cylinder pressure. Built from Custom Age 625+ material, this kit is designed for high-boost, high-horsepower, towing, sled pulling, drag racing, and competition diesel applications.
Compared to standard head bolts or conventional stud kits, ARP 625 Series head studs deliver increased tensile strength, improved fatigue resistance, and more consistent clamping force. For serious P7100-equipped 12-valve Cummins builds, ARP 247-4205 is one of the strongest head stud options available.
FEATURES
- Designed for 1994-1998 5.9L Cummins 12-valve engines
- Custom Age 625+ material construction
- 260,000 PSI tensile strength rating
- Improves head gasket retention under extreme boost and cylinder pressure
- Ideal for competition, towing, street performance, and high-horsepower diesel builds
- Threads are rolled after heat treatment for improved fatigue strength
- Includes studs, 12-point nuts, hardened washers, lubricant, and instructions
- Reusable when properly inspected and installed according to ARP specifications
FITMENT
- 1994-1998 Dodge Ram 2500 5.9L Cummins 12V
- 1994-1998 Dodge Ram 3500 5.9L Cummins 12V
- Fits P7100-equipped 5.9L Cummins 12-valve engines
WHAT'S INCLUDED
- 26 ARP Custom Age 625+ head studs
- 26 ARP 12-point nuts
- 26 hardened washers
- ARP assembly lubricant
- Installation instructions
CROSS-REFERENCE & RELATED PRODUCTS
- ARP 247-4203 Head Stud Kit for 1989-1998 5.9L Cummins 12V
- ARP 247-4202 Head Stud Kit for 1998.5-2024 5.9L/6.7L Cummins 24V
- ARP 247-4204 625 Series Head Stud Kit for 1998.5-2024 5.9L/6.7L Cummins 24V
- ARP Diesel Fasteners
WHY CHOOSE ARP 625 SERIES HEAD STUDS?
High-performance 12-valve Cummins engines can create cylinder pressure far beyond what factory head bolts were designed to handle. The ARP 247-4205 625 Series kit provides extreme clamping strength to help prevent head lift, improve head gasket sealing, and support demanding diesel performance applications.
SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | ARP |
| Part Number | 247-4205 |
| Engine | 5.9L Cummins 12V |
| Fitment Years | 1994-1998 |
| Material | Custom Age 625+ |
| Tensile Strength | 260,000 PSI |
| Application | Extreme boost, towing, racing, street performance, and competition diesel use |
| UPC / GTIN-12 | 672036035655 |
FAQ
Will ARP 247-4205 fit my 1994-1998 5.9L Cummins?
Yes. ARP 247-4205 is designed for 1994-1998 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L Cummins 12-valve engine.
What makes ARP 247-4205 different from ARP 247-4203?
ARP 247-4205 is the upgraded 625 Series kit made from Custom Age 625+ material. ARP 247-4203 is the standard 12-valve Cummins head stud kit. The 625 Series option is intended for more extreme boost, horsepower, and cylinder pressure.
Are ARP 625 head studs recommended for high horsepower Cummins builds?
Yes. ARP 625 Series studs are strongly recommended for high-boost, high-horsepower, competition, sled pulling, drag racing, and demanding towing applications where maximum head gasket retention is needed.
Can ARP 247-4205 head studs be reused?
Yes. ARP head studs can typically be reused when they are properly inspected and installed according to ARP specifications.
