Description
When your old IH tractor starts running hot or you notice coolant leaking around the radiator cap, it’s time for a replacement. A worn cap can’t hold proper pressure, which means your cooling system can’t do its job—and that leads to overheating, lost coolant, and potentially expensive engine damage. This 4 PSI radiator cap brings your cooling system back to factory specs.
What You’re Getting
- Precise 4 PSI pressure rating keeps your cooling system working at the right pressure
- Two-way valve design lets coolant flow properly and prevents vacuum formation
- Durable seal that handles temperature cycling and won’t deteriorate from coolant exposure
- Direct replacement for the original cap—no modifications needed
- Important note: This cap won’t work with short filler necks, so check your radiator first
Built for Classic Farm Work
The 4 PSI pressure rating increases coolant boiling point, preventing vapor formation that reduces cooling efficiency and keeps your engine running cooler under load. These classic IH tractors were built when farming was done at a steady pace, but they still need proper cooling whether you’re cultivating, mowing, or running a PTO implement on a hot summer day.
Made to Last
This cap uses corrosion-resistant materials that provide long-lasting performance in harsh farm environments. The spring mechanism and seals are designed to handle years of pressure cycling without losing their effectiveness, so you won’t be replacing it again anytime soon.
Good to Know
Always let the engine cool completely before removing the old cap, and inspect the radiator neck for damage or corrosion before installing the new one. Make sure you’ve got the right filler neck length—this cap needs the standard long neck to seat properly and maintain pressure.
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