Radiator Cap with Spring-Loaded Pressure Relief Valve for Tractor Cooling Systems SKU: QT58429

A failing radiator cap might look harmless, but it creates real problems fast—coolant boils over at lower temperatures, air gets into the system, and you end up dealing with mysterious coolant loss and overheating damage. This replacement cap maintains the proper system pressure to prevent coolant loss, air infiltration, and the overheating problems that come with cooling system failures.

Key Benefits

• Pressure rating increases coolant boiling point by 20-30 degrees Fahrenheit, preventing vapor formation that reduces cooling efficiency
• Spring-loaded valve design provides reliable pressure relief when temperatures climb
• Metal construction resists corrosion and maintains seal integrity through repeated heat cycles
• Professional-grade build prevents vacuum formation during cooling cycles for consistent engine temperatures

This cap fits standard radiator necks and works reliably whether you're running a hay rake in July heat or pushing through heavy tillage work. If you've been fighting coolant loss or running hot, this is often the simple fix that saves the day. S&H Parts has been solving cooling system problems since 1969—call us if you need help confirming the right fit for your equipment.