Valair Heavy Duty Replacement Hydraulics NMU70HYD-01 For 94-97 Ram 5.9L Cummins. The Valair Heavy Duty Replacement Hydraulics NMU70HYD-01 is a heavy duty hydraulic upgrade perfect for use with a stock replacement or upgraded clutch. Each hydraulic set is pre-bled and comes ready for installation. The Replacement Hydraulics is designed for 2nd Generation Trucks with NV4500 Transmissions. 1994 Dodge 5.9L Cummins Diesel'With 5-Speed Transmission. 1995 Dodge 5.9L Cummins Diesel'With 5-Speed Transmission. 1996 Dodge 5.9L Cummins Diesel'With 5-Speed Transmission. 1997 Dodge 5.9L Cummins ...