Product Description
The VALAIR NMU70NV45DDSN-ORG is a street-friendly dual disc organic clutch for NV4500-equipped 1994–2003 Ram 2500/3500 5.9L Cummins trucks. It’s designed for builds up to ~550 HP / 1,100 ft-lbs with smooth engagement and tow-ready manners. Includes a nodular dual-disc flywheel and a 3400# pressure plate for quick, confident shifts.
Fitment
- 1994–2003 Dodge Ram 2500/3500, 5.9L Cummins (12V & 24V), NV4500 5-speed manual
- Requires upgraded 1-3/8" (1.375") input shaft for proper spline strength on dual-disc setups
What’s Included
- Nodular iron NV4500 dual-disc flywheel (sprung hub)
- 3400# pressure plate
- Organic dual discs & strapped/billet floater
- Release bearing & HD pilot bearing
- Modified clutch fork, bolt kit, starter spacer, alignment tool
Recommended Supporting Parts
- Hydraulics (’94–’97): Valair NMU70HYD-01
- Hydraulics (’98–’02): Valair NMU70HYD-02
- ARP Flywheel Bolts (’89–’04 5.9L): ARP 147-2802
- Starter Spacer (NV4500 dual-disc/NV5600 flywheel conversions): Valair V2151 or CPP V2151
- HD Input Shaft Upgrade (required for this kit): CPP NV4500 1.375" Input Shaft
- NV4500 Performance Flywheel (single-disc builds): Valair V3433 (see Valair brand page)
Cross-Reference / Alternatives
- Quieter Ceramic Dual Disc (~650 HP): Valair QNV45DDSN
- Heavy Duty Single-Disc (12.25", ~450 HP): Valair NMU70119-06
- 13" Upgrade Single-Disc (Kevlar/Ceramic, ~500 HP): Valair NMU70279-06-5SCE
- 13" Upgrade Single-Disc (Ceramic, ~600 HP): Valair NMU70279-04-5SCE
- 13" Upgrade Single-Disc (Brass-Woven Organic, ~400 HP): Valair NMU70279-01-5SCE
FAQ
Does this kit include a flywheel and starter spacer?Yes. It includes a nodular dual-disc NV4500 flywheel, hardware, bearings, a modified fork, and a starter spacer along with the alignment tool.
Do I need a 1-3/8" input shaft?Yes—dual disc NV4500 clutches require the larger 1.375" input for strength. Use the CPP Extreme Duty NV4500 1.375" Input Shaft for reliable service.
How does it drive compared to ceramic?The organic facings favor smooth, quiet engagement and towing manners while still holding ~550 HP—ideal for daily/tow rigs versus the more aggressive bite of ceramic.
What should I replace during install?Fresh hydraulics and new flywheel bolts are smart insurance. See NMU70HYD-01, NMU70HYD-02, and ARP 147-2802.
Break-in tips?Light throttle and no heavy towing or full-throttle launches for ~500 miles helps seat the facings for best life and smoothness.
