Description
When your cooling system starts acting up—maybe you’re seeing steam on hot days or the temperature gauge is climbing higher than usual—there’s a good chance your radiator pressure tank isn’t doing its job anymore. This expansion tank maintains the pressure balance that lets your cooling system work properly, recovering coolant as the engine cools and releasing excess pressure when things heat up. A faulty expansion tank leads to coolant loss, air in the system, and eventual overheating problems.
What You’re Getting
- Direct replacement tank that maintains proper system pressure for optimal cooling
- Durable construction built to handle the temperature swings and vibration of daily farm work
- Proper capacity to handle coolant expansion without venting precious fluid
- Quality seals that prevent air infiltration and keep your cooling system working as designed
Built for Real Farm Work
This pressure tank serves the reliable John Deere 5E, 5003, 5025, and 5015 series tractors that handle everything from loader work to field cultivation. Whether your 5E is moving hay bales on a July afternoon, your 5025 is pulling a bush hog through thick pasture, or your 5015 is running a rotary cutter along fence rows, proper cooling keeps these versatile tractors running strong when the work gets demanding.
Made to Last
This tank features calibrated pressure relief for proper system operation and a vacuum valve that allows coolant recovery from the expansion tank. The robust construction handles the daily beating that farm equipment takes, from temperature extremes to constant vibration, ensuring your cooling system maintains the right pressure season after season.
Installation Notes
Before installing, inspect the expansion tank neck for cracks or damage that could prevent proper sealing and clean any debris or buildup from the sealing surface. Check your coolant level in both the radiator and expansion tank after installation—the expansion tank should be about 1/3 full when cold, allowing room for hot coolant expansion. If you’re constantly adding coolant to the expansion tank, check this part first since a faulty tank causes mysterious coolant loss without visible leaks.



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