Product Description
ARP 247-4204 HEAD STUD KIT 625 SERIES FOR 1998.5–2024 5.9/6.7 CUMMINS ENGINE
Upgrade your 24-valve Cummins with the ARP 247-4204 Custom Age 625+ Head Stud Kit—the go-to solution when higher boost, towing, or competition power demands rock-solid head sealing. Precision-made studs, 12-point nuts, hardened washers, and ARP Ultra-Torque deliver consistent clamping and repeatable torque for serious builds.
Designed for 1998.5–2024 Cummins 5.9L/6.7L 24V applications, this kit is ideal for tuned tow rigs up through high-horsepower trucks that push cylinder pressure to the edge. When you’re ready to step beyond standard 8740/ARP2000 fasteners, ARP’s CA625+ alloy offers the extra margin you’re after.
FITMENT
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24-valve
- 2003–2007 Dodge Ram 2500/3500 5.9L Cummins Common-Rail
- 2007.5–2012 Dodge/Ram 2500/3500 6.7L Cummins
- 2013–2018 Ram 2500/3500 6.7L Cummins
- 2019–2024 Ram 2500/3500 6.7L Cummins
WHAT’S INCLUDED
- (26) CA625+ head studs
- (26) 12-point nuts & (26) hardened washers
- ARP Ultra-Torque fastener lubricant
- Installation instructions
WHY CHOOSE ARP 625+
- Premium Custom Age 625+ material engineered for extreme cylinder pressure
- Studs are heat-treated and threads are rolled after heat-treat for fatigue strength
- Consistent clamping force for improved head gasket life on boosted/tuned engines
FAQ
Q: Do I need 625+ studs or will standard ARP studs work?
A: For stock or mild tunes, standard ARP 247-4202 studs are a great choice. If you run elevated boost/fuel or competition power levels, step up to 625+ with this 247-4204 kit.
Q: Are these studs reusable?
A: Studs can typically be reused if inspection shows no stretching or damage. Always clean threads, use ARP Ultra-Torque, and follow ARP’s instructions.
Q: Do these fit the entire 1998.5–2024 range?
A: Yes—this kit is built for 24-valve 5.9L & 6.7L Cummins applications from 1998.5 through 2024.
Q: Is machine work required?
A: No special machining is required. Proper surface prep, gasket selection, and torque procedure are critical for sealing success.
CROSS-REFERENCE / RELATED ARP ITEMS (CPP LINKED)
- ARP 247-4202 (Standard Duty) – 1998.5–2024 Cummins 24V
- ARP 247-4203 – 1989–1998 Cummins 5.9L 12V
- ARP 247-4205 (625+) – 1994–1998 Cummins 5.9L 12V
- ARP 247-4207 (625+) – Cummins 3.9L 4BT
- Shop all ARP at CPP Diesel
INSTALL NOTES
- Clean block & head threads; chase if needed. Use ARP Ultra-Torque on threads and under nuts as instructed.
- Torque sequence & values per ARP instructions; re-torque after initial heat cycles if recommended by ARP.
Specifications for ARP 247-4204
| UPC | 672036035648 |
|---|---|
| GTIN | 00672036035648 |
| Shipping Info | Eligible for standard ground shipping from CPP Diesel (packaged as complete ARP kit) |
| Cross Reference | ARP 247-4202 (Std Duty) – link | ARP 247-4203 – link | ARP 247-4205 – link | ARP 247-4207 – link |
| E-Codes / CARB | Not applicable (hardware) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
| Kit / Socket Info | Uses 14mm 12-pt socket; includes 5mm Allen (per ARP kit info) |
| Material | Custom Age 625+ alloy |
