Description

When your temperature gauge starts climbing during a long day of plowing or baling, you know it’s time to address the cooling system before you’re stuck with major engine damage. When your temperature gauge starts creeping up during heavy field work, you need to act fast. This replacement water pump keeps coolant flowing properly through your system, preventing the overheating that can sideline your tractor when you need it most. This complete water pump with 126mm pulley gets your John Deere 40 and 50 series tractors back to operating at proper temperatures.

What You’re Getting

Complete pump assembly with precision 126mm pulley for correct belt alignment and speed
Heavy-duty construction designed specifically for diesel engine cooling demands
Quality bearings and seals that handle the vibration and heat of farm work
Direct replacement that includes pump body, shaft, impeller, and properly sized pulley
Restores full coolant flow and pressure to protect against overheating

Built for Real Farm Work

Your 40 and 50 series John Deeres – whether you’re running a 1640 doing loader work, a 2040 in the fields, or a 2750 pulling heavy implements – generate serious heat under load. These tractors power through everything from cultivation and planting to hay production and PTO work. The 126mm pulley size is critical for maintaining proper pump speed, ensuring your cooling system can handle the demands of long days and heavy loads without overheating.

Made to Last

This isn’t some generic automotive pump trying to do farm work. The cast iron construction resists corrosion while providing the strength needed for agricultural service. Quality bearings provide smooth operation without the play that leads to seal failure and coolant leaks. The precisely balanced 126mm pulley reduces vibration and belt wear, while the impeller design delivers the flow rates these specific engines require.

Installation Notes

Drain your cooling system completely before starting, and clean all mounting surfaces thoroughly – any debris causes leaks. Drain cooling system completely before starting. Clean mounting surface thoroughly to ensure proper gasket seal. Transfer any fittings or sensors from old pump if needed. Use new gaskets and apply sealant as specified. Check belt alignment and tension after installation. Refill system slowly to prevent air pockets. Run engine with cap off until thermostat opens, then top off. The 126mm pulley size is specific to these models, so verify before ordering. This is also a good time to inspect your radiator, hoses, and thermostat condition.