OEM 431KC45 Heavy-Duty Transmission Oil Pump, Gearbox Lubrication Pump For Mack Truck

OEM 431KC45 Heavy-Duty Transmission Oil Pump, Gearbox Lubrication Pump For Mack Truck 431KC45 transmission oil pump serves as an OEM equivalent replacement part for Mack heavy truck transmissions, precision cast and machined to deliver stable and consistent oil pressure for gearbox lubrication; durable internal structure resists wear under continuous heavy-load operation, ensures adequate oil circulation to cool and protect gears and bearings, reduces premature transmission