Universal Radiator Expansion Tank Cap with Pressure Relief Valve for Agricultural Tractors SKU: QT44137

A faulty expansion tank cap leads to coolant loss, air in the system, and eventual overheating problems. This universal cap maintains the pressure balance that lets your cooling system work properly, ensuring your overflow system can do its job, recovering coolant as the engine cools and releasing excess pressure when things heat up.

Why This Part Matters

• Calibrated pressure relief valve maintains proper system operation
• Vacuum relief valve allows coolant to flow back from expansion tank, preventing air pockets that cause hot spots
• Universal design works with various tractor brands using standard expansion tank systems
• Robust gasket material creates reliable seal that won't deteriorate from coolant exposure

If you're constantly adding coolant to the expansion tank, check this cap first - a faulty cap causes mysterious coolant loss without visible leaks. For proper installation and fitment guidance, S&H Parts has been helping customers solve cooling system problems since 1969.