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SKU: 247-4204 | UPC: 672036035648
ARP Cylinder Head Stud Kit for Dodge 5.9L & 6.7L 24V Cummins (1998 & later) Custom Age 625+
This ARP Pro Series cylinder head stud kit upgrades Dodge Ram trucks with 5.9L and 6.7L 24V Cummins engines from 1998 onward. The Custom Age 625+ material provides exceptional tensile strength over 220,000 PSI for reliable head clamping under high boost and horsepower. Engine builders choose these studs to prevent head gasket failures in competition and daily driven diesel applications.
Key Features
- Custom Age 625+ Alloy: Nickel-based superalloy exceeds ARP2000 strength with superior fatigue resistance and corrosion protection for extreme diesel power levels
- Precision Heat Treatment: Vertically racked studs achieve uniform 220,000+ PSI tensile strength ensuring even clamping across all cylinders
- Centerless Grinding: Post-heat-treat process creates concentric straightness so heads and gaskets align perfectly without binding
- Thread Rolling After Heat Treat: Delivers 2000% higher fatigue strength than pre-heat-treat threaded studs for long-term durability
- Undercut Design: Equalizes stretch on shorter studs to maintain consistent clamp load and resist head gasket blowouts
Product Notes
- Use ARP Ultra-Torque assembly lubricant on threads and under nut faces for accurate torque values
- Torque to ARP specifications: long studs 110 ft-lbs, medium 90 ft-lbs, short 70 ft-lbs in three stages
- Ships in protective ARP packaging to prevent thread damage
Installation Notes
- Professional installation recommended.
- Clean blind holes thoroughly and chase threads before installation
- Compatible with OEM and aftermarket head gaskets. includes 12-point nuts and hard washers
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1998.5-2002 | Dodge | Ram 2500 | 5.9L Cummins 24V Diesel |
| 1998.5-2002 | Dodge | Ram 3500 | 5.9L Cummins 24V Diesel |
| 2003-2007 | Dodge | Ram 2500 | 5.9L Cummins 24V Diesel |
| 2003-2007 | Dodge | Ram 3500 | 5.9L Cummins 24V Diesel |
| 2003-2007 | Dodge | Ram 4500 | 5.9L Cummins 24V Diesel |
| 2003-2007 | Dodge | Ram 5500 | 5.9L Cummins 24V Diesel |
| 2007.5-2024 | Dodge/Ram | 2500 | 6.7L Cummins 24V Diesel |
| 2007.5-2024 | Dodge/Ram | 3500 | 6.7L Cummins 24V Diesel |
| 2007.5-2024 | Dodge/Ram | 4500 | 6.7L Cummins 24V Diesel |
| 2007.5-2024 | Dodge/Ram | 5500 | 6.7L Cummins 24V Diesel |
Why Choose ARP?
- Trusted by professional engine builders in drag racing and sled pulling
- USA-made with exacting tolerances for repeatable performance
- Proven in high-horsepower Cummins builds with ARP stamp on every stud
Frequently Asked Questions
-
Q: Will this kit fit my 2006 Ram 2500 5.9L Cummins?
A: Yes, ARP 247-4204 fits all 1998.5-2007 5.9L 24V Cummins in Ram 2500/3500/4500/5500 models -
Q: What makes Custom Age 625+ different from steel studs?
A: Custom Age 625+ is a high-nickel alloy with over 220,000 PSI strength and better heat/corrosion resistance for turbocharged diesels -
Q: Does ARP offer a warranty on these head studs?
A: ARP provides a lifetime warranty against manufacturing defects when installed and torqued per instructions
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: ARP branded box measuring 2 x 8 x 12 inches
- Weight: 4.65 lbs
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