Product Description
The ARP 247-5401 Main Stud Kit is designed for late 1997-2006 Dodge Ram 5.9L Cummins engines without the factory block stiffener or girdle. This kit replaces factory main bolts with high-strength ARP studs to improve bottom-end clamping, reduce main cap movement, and help protect the block threads in performance, towing, and high-load diesel applications.
Manufactured from 8740 chromoly steel and heat-treated to a 190,000 PSI tensile strength rating, ARP 247-5401 is a strong upgrade for 2-bolt main Cummins builds that are not using the factory block stiffener. ARP confirms this kit is for Dodge 5.9L 24V Cummins late 1997-2006 2-bolt main applications. Summit Racing also notes that this kit does not work with a main stud girdle.
FEATURES
- Designed for late 1997-2006 5.9L Cummins 2-bolt main applications
- For engines without the factory block stiffener or main stud girdle
- 8740 chromoly steel construction
- 190,000 PSI tensile strength rating
- Helps reduce main cap walk and fretting
- Helps protect engine block threads compared to repeated main bolt service
- Includes studs, nuts, washers, lubricant, and installation instructions
- Precision threads are rolled after heat treatment for improved fatigue strength
FITMENT
- Late 1997-2002 Dodge Ram 2500/3500 5.9L Cummins 24V without factory block stiffener
- 2003-2006 Dodge Ram 2500/3500 5.9L Cummins Common Rail builds without factory block stiffener or girdle
- Select 24V and 6.7L Cummins builds where the factory block stiffener or girdle is not used
Fitment Note: This kit is for engines without the factory block stiffener or main stud girdle. For builds retaining the factory stiffener or girdle, use the appropriate ARP main stud kit designed for that configuration.
WHAT'S INCLUDED
- ARP main studs
- ARP 12-point nuts
- Hardened washers
- ARP Ultra-Torque fastener lubricant
- Installation instructions
CROSS-REFERENCE & RELATED PRODUCTS
- ARP 247-5403 Main Stud Kit with Factory Block Stiffener for 2003-2018 Cummins 5.9L/6.7L
- ARP 247-5405 Main Stud Kit for 2007.5-2018 6.7L Cummins with Factory Girdle
- ARP 247-5402 14mm Main Stud Kit for 1989-1997 5.9L Cummins 12V
- ARP 247-4202 Head Stud Kit for 1998.5-2024 5.9L/6.7L Cummins
- ARP Diesel Fasteners
WHY UPGRADE TO ARP MAIN STUDS?
Cummins engines used for heavy towing, added fueling, upgraded turbochargers, higher RPM, or competition can place additional load on the lower end of the engine. ARP main studs help provide more consistent clamping force than factory main bolts, supporting main cap stability and improved durability in demanding diesel builds.
SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | ARP |
| Part Number | 247-5401 |
| Engine | 5.9L Cummins 24V |
| Fitment Years | Late 1997-2006 |
| Main Configuration | 2-bolt main, without factory block stiffener or girdle |
| Material | 8740 chromoly steel |
| Tensile Strength | 190,000 PSI |
| UPC / GTIN-12 | 672036035082 |
| GTIN / EAN-13 | 0672036035082 |
| Prop 65 | Warning: This product can expose you to chemicals including nickel. For more information, visit www.P65Warnings.ca.gov. |
FAQ
Will ARP 247-5401 work with a factory block stiffener or girdle?
No. ARP 247-5401 is intended for Cummins engines without the factory block stiffener or main stud girdle. If your build retains the factory stiffener or girdle, use the correct ARP kit for that configuration.
What engine does ARP 247-5401 fit?
ARP 247-5401 is listed by ARP for Dodge 5.9L 24V Cummins late 1997-2006 2-bolt main applications. It may also be used in select 24V or 6.7L builds where the factory stiffener or girdle is not being used.
What material is this main stud kit made from?
This kit uses 8740 chromoly steel fasteners heat-treated to a 190,000 PSI tensile strength rating.
Why upgrade from main bolts to main studs?
Main studs provide more consistent clamping force, help reduce main cap movement, and help protect block threads in performance, towing, and high-load diesel applications.
