Product Description
Boost bottom-end clamping force and protect your block threads with the ARP 247-5401 MAIN STUD KIT for late ’97–’06 5.9L Cummins (2-bolt main) and builds where the factory stiffener/girdle is not used. Manufactured from premium 8740 chromoly and heat-treated to a rated tensile strength of ~190,000 psi, this kit delivers the stability serious tow, street, and competition engines demand. Includes studs, 12-point nuts, and washers with ARP Ultra-Torque lube for consistent preload.
If your build retains the Cummins factory block stiffener (girdle), use the matched ARP kit: ARP 247-5405 (6.7L with factory girdle) or ARP 247-5403 (’03–’18 5.9/6.7 with stiffener).
For cylinder head sealing under boost, pair with ARP 247-4202 head studs or step up to ARP 247-4204 (625+). Keep the crank damper secured with ARP 147-2502 damper bolts and upgrade the rods with ARP 247-6303 rod bolts.
WHAT ENGINES DOES ARP 247-5401 FIT?
Late ’97–’06 Dodge/Ram 5.9L Cummins 24V with 2-bolt mains. It is intended for builds that do not use the factory block stiffener/girdle. If your 6.7L (’07.5+) retains the girdle, use 247-5405. If your 2003–2018 build has the stiffener, use 247-5403.
WHAT’S THE MATERIAL AND STRENGTH RATING?
8740 chromoly, heat-treated; typical ARP rating ~190,000 psi tensile strength. Includes 12-point nuts and hardened washers.
DO I NEED THE FACTORY STIFFENER (GIRDLE) FOR THIS KIT?
No—the 247-5401 kit is for applications without the factory block stiffener. If you keep the stiffener, pick 247-5403 (5.9/6.7 ’03–’18) or 247-5405 (6.7 ’07.5–’18).
ARE INSTALLATION INSTRUCTIONS AVAILABLE?
Yes—ARP provides a dedicated instruction sheet and torque guidance for 247-5401.
FITMENT DETAILS (PLAIN TEXT SNIPPET TO PLACE NEAR DESCRIPTION)
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Dodge/Ram Cummins 5.9L 24-valve late 1997 (1997.5)–2006, 2-bolt main blocks, without factory block stiffener/girdle. ARP Bolts
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For builds retaining the stiffener/girdle, use: ARP 247-5403 (’03–’18 5.9/6.7) or ARP 247-5405 (’07.5–’18 6.7)
CROSS-REFERENCE / RELATED ARP ITEMS (CPP LINKS ONLY)
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With factory stiffener (’03–’18 5.9/6.7): ARP 247-5403 → https://cppdiesel.com/arp-247-5403-main-stud-kit-with-factory-block-stiffener-2003-2018-cummins-5-9l-6-7l/ CPP Diesel
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6.7L w/ factory girdle (’07.5–’18): ARP 247-5405 → https://cppdiesel.com/arp-247-5405-main-stud-kit-2007-5-2018-dodge-6-7l-cummins-with-factory-girdle/ CPP Diesel
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12-valve 14 mm mains (’89–’97): ARP 247-5402 → https://cppdiesel.com/arp-247-5402-14mm-main-stud-kit-89-97-12v-5-9l-cummins/ CPP Diesel
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Head studs (street/tow): ARP 247-4202 → https://cppdiesel.com/arp-247-4202-head-stud-kit-1998-5-2024-cummins-5-9l-24v/ CPP Diesel
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Head studs (625+): ARP 247-4204 → https://cppdiesel.com/arp-247-4204-head-stud-kit-625-series-1998-5-2024-cummins-5-9l-6-7l-24v/ CPP Diesel
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Damper bolt kit: ARP 147-2502 → https://cppdiesel.com/arp-147-2502-harmonic-balancer-bolt-kit-for-1989-2007-cummins-5-9l-12v-24v-engine/ CPP Diesel
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Rod bolt kit: ARP 247-6303 → https://cppdiesel.com/arp-247-6303-rod-bolt-kit-1989-2018-cummins-5-9l-6-7l/
| Manufacturer | ARP (Automotive Racing Products) |
| Part Number | 247-5401 |
| Application | Dodge/Ram Cummins 5.9L 24V late ’97–’06, 2-bolt main, without factory block stiffener/girdle |
| Material | 8740 chromoly steel |
| Tensile Strength | ~190,000 psi |
| Nuts/Washers | 12-point nuts with hardened washers; ARP Ultra-Torque lube included |
| Tooling | 14 mm 12-point, 5 mm Allen (per ARP kit data) |
| UPC | 672036035082 |
| GTIN (EAN-13) | 0672036035082 |
| Shipping Info | Weight ~4.0–4.25 lb; typical carton approx. 8" × 4" × 2" |
| Cross Reference | ARP 247-5402 (12V 14mm), ARP 247-5403 (with stiffener), ARP 247-5405 (6.7L with girdle) |
| E-Codes | N/A (fastener kit) |
| Prop 65 | WARNING: This product can expose you to chemicals including Nickel — for more information go to www.P65Warnings.ca.gov |
| Included In Box | Main studs, 12-pt nuts, washers, ARP Ultra-Torque lube, instructions |
