This transmission oil pump assembly for Mack applications is made by PAI and includes the pump housing, cover, and gerotor set with inner and outer rotors. The kit also supplies the lube oil pump bushing, drive shaft, pressure relief plunger with spring and plug/stop, plus mounting screws and O-rings for a full installation. Together these components draw and pressurize lubricant so it can circulate through the transmission's gears, bearings, and clutch packs for cooling and lubrication.
Features
Complete oil pump assembly including pump housing, cover, and gerotor set
Cross-references Mack 431KC45, 431KC45A, 22196693, 25499043, and 25502579
Includes inner and outer rotors, lube oil pump bushing, and drive shaft
Pressure relief plunger, spring, and plug/stop included for pump regulation
Mounting screws and O-rings included for a complete installation
A PAI part
Tech Specs
- Cross-reference: Mack 431KC45, 431KC45A, 22196693, 25499043, 25502579
- Sell pack: 1 Each
- Kit includes: Pump Cover, Pump Housing Assembly, Housing Pump, Lube Oil Pump Bushing, Gerotor Set, Rotor Inner, Rotor Outer, O-Ring, Screw (x2), Relief Plunger, Pressure Relief Spring, O-Ring, Pressure Relief Plug/Stop, Spring Pin, Drive Shaft, O-Ring
Used in these Mack models
