Description

Nothing kills a good day in the field like an overheated tractor. When your radiator cap isn’t sealing properly, you’ll see steam, lose coolant, and watch your temperature gauge climb into the danger zone. This 7 PSI radiator cap keeps your cooling system pressurized at the right level so your John Deere runs cool and steady, even when you’re working it hard.

What You’re Getting

Proper 7 PSI pressure rating that matches your tractor’s cooling system specs
Fits 1-inch deep radiator necks—the standard size on these classic John Deere models
OE-type construction that seals tight and releases pressure when it should
Direct replacement for your worn or damaged original cap

Built for Real Farm Work

This cap fits a wide range of John Deere tractors spanning decades of production, from the compact 820 series utility tractors up through the big 8630 row-crop machines. Whether you’re running a 2010 for hay work, a 4020 for planting, or an 8430 pulling heavy implements, this is the same type of cap that came from the factory.

Made to Last

A radiator cap takes more abuse than you might think—constant temperature changes, vibration, and pressure cycles. This one’s built with quality materials and a spring-loaded valve system that maintains proper pressure while protecting against over-pressurization. The rubber seals stay flexible and keep doing their job season after season.

Good to Know

Always let your engine cool down completely before removing any radiator cap—hot coolant under pressure can cause serious burns. If your old cap has been stuck for years, a little penetrating oil around the threads helps. While you’ve got the cap off, it’s a perfect time to check your coolant level and condition.