Product Description
Street/tow friendly 350 HP / 750 FT-LBS holding with factory-like manners. The VALAIR NMU70279-5SCE is a 13" organic single-disc upgrade for 1994–2003 Ram 2500/3500 5.9L Cummins trucks equipped with the NV4500 5-speed. It converts the stock 12.25" setup to a stronger 13" package for better heat capacity and grip while keeping daily drivability.
Fitment
- 1994–2003 Ram 2500/3500, 5.9L Cummins (12-valve & 24-valve)
- NV4500 5-speed manual (13.00" x 1.25" disc, OEM-style hub)
What’s Included
- 13.00" organic disc (1.25" input, sprung hub)
- 3400# pressure plate
- Dual-drilled 5-speed flywheel
- Release bearing & HD pilot bearing
- Alignment tool & hardware
Recommended Supporting Parts
- Valair Heavy Duty Hydraulics (’94–’97 NV4500): NMU70HYD-01
- ARP Flywheel Bolt Kit (1989–2004 5.9L): ARP 147-2802
- Starter Spacer (for 13" / NV5600-style flywheel conversions): CPP V2151
- NV4500 1.375" Input Shaft upgrade (future dual-disc readiness): CPP Extreme Duty Input Shaft
Cross-Reference / Alternatives
- Step up (400 HP) – Brass-Woven Organic: NMU70279-01-5SCE
- Step up (500 HP) – Kevlar/Ceramic: NMU70279-06-5SCE
- Max single disc (600 HP) – Ceramic: NMU70279-04-5SCE
- 12.25" Alternative – Ceramic/Kevlar (450 HP): NMU70119-06
- Quiet Dual Disc (650 HP) – NV4500: QNV45DDSN
FAQ
How much power and torque will this clutch hold?Approximately 350 HP and 750 ft-lbs in typical street/tow use with healthy hydraulics and proper break-in.
Does it include a flywheel?Yes. This is a complete 13" conversion kit with a dual-drilled 5-speed flywheel, 3400# pressure plate, disc, bearings, and alignment tool.
Will pedal effort change?Pedal effort is comparable to stock thanks to the 3400# diaphragm design and organic facings, but expect firmer engagement versus a worn OEM unit.
How do I know if I have an NV4500?1994–2003 Cummins 5-speed trucks use NV4500. Check the transmission ID tag/case if unsure. 2000.5–2005.5 6-speed trucks use NV5600, which requires different kits.
What else should I replace during install?We recommend fresh hydraulics, ARP flywheel bolts, and the starter spacer when applicable: NMU70HYD-01, ARP 147-2802, CPP V2151.
