Product Description
Rated ~550 HP / ~1,000 FT-LBS, the Valair NMU70119-04 is a 12.25" ceramic single-disc upgrade for 1994–2003 Ram 2500/3500 5.9L Cummins with the NV4500 5-speed. It’s a proven work/tow clutch with firm bite and daily-drivable manners when properly broken in.
Fitment
- 1994–2003 Dodge Ram 2500/3500, 5.9L Cummins (12-valve & 24-valve)
- Transmission: NV4500 5-speed, 1.25" input
Tip: If you plan future 13" conversions or dual disc, see the Cross-Reference section below.
What’s Included
- 12.25" x 1.25" ceramic sprung-hub disc
- Heavy-duty pressure plate (~3,800# class)
- Release bearing & heavy-duty pilot bearing
- Alignment tool & hardware as supplied by Valair
Recommended Supporting Parts
- Hydraulics (’94–’97): Valair NMU70HYD-01
- Hydraulics (’98–’02): Valair NMU70HYD-02
- Starter Spacer (NV4500 w/ NV5600 flywheel conversions): CPP V2151
- Flywheel Bolts: ARP 147-2802
- 13" NV4500 Performance Flywheel (dual-drilled 12.25/13.00): Valair V3433
Cross-Reference / Alternatives
- OEM-Level Organic (stock power): Valair NMU70119
- Step Down (more street-friendly, ~450 HP): Valair NMU70119-06 Ceramic/Kevlar
- 13" Upgrade – Organic (~350 HP) w/ flywheel: NMU70279-5SCE
- 13" Upgrade – Kevlar/Ceramic (~500 HP) w/ flywheel: NMU70279-06-5SCE
- 13" Upgrade – Ceramic (~600 HP) w/ flywheel: NMU70279-04-5SCE
- Quiet Dual Disc – Ceramic (~650 HP): QNV45DDSN
FAQ
How much power will NMU70119-04 hold?It’s generally used around ~550 HP and ~1,000 ft-lbs (driver, weight, gearing, and traction dependent). Ceramic facings provide higher heat capacity than organic.
Will it fit my 1994–2003 Cummins NV4500?Yes—this kit is built for the NV4500 5-speed with the 1.25" input. If you’re running an NV5600 or planning a 13" conversion, see the alternatives above.
Do I need upgraded hydraulics?Fresh hydraulics are strongly recommended on older trucks. Use NMU70HYD-01 for 1994–1997 and NMU70HYD-02 for 1998–2002.
What’s the break-in procedure?Typical street break-in is ~500 gentle miles with varied engagement and minimal slipping. Proper break-in greatly reduces chatter and improves service life.
What if I tow heavy often?If you’re frequently at higher loads or planning future power, consider a 13" upgrade (NMU70279-06-5SCE) or the quiet dual disc (QNV45DDSN).