Description
When you’re working your Massey Ferguson hard in hot weather and notice your cooling system isn’t holding pressure like it should, a worn radiator cap is often the culprit. Your radiator cap is the unsung hero of your cooling system, maintaining the right system pressure to keep your coolant from boiling over, even when you’re working your tractor hard on hot summer days. This bayonet-style replacement gets your cooling system back to spec with a secure twist-lock connection.
What You’re Getting
- Bayonet twist-lock design that clamps down tight—no more caps that work loose from vibration
- Proper pressure rating that raises your coolant’s boiling point, letting it absorb more heat without turning to steam
- Two-way valve system that lets coolant expand when hot and pulls it back when cooling down
- Heavy-duty construction built to handle the pressure cycling and temperature swings of farm work
- Direct replacement for your original equipment—no modifications needed
Built for Real Farm Work
The Massey Ferguson 200 and 500 series tractors are dependable workhorses found on farms everywhere, handling everything from loader work around the barnyard to heavy field operations. Whether you’re tedding hay in July heat, plowing heavy ground, or running a brush hog through overgrown pasture, your engine generates serious heat. This bayonet cap keeps your cooling system sealed and pressurized so your tractor can handle those demanding jobs without overheating.
Made to Last
The bayonet mounting system creates a more secure seal than threaded caps, especially important when your tractor’s bouncing through rough fields or vibrating under heavy loads. The materials resist corrosion from coolant exposure and won’t crack from temperature cycling like cheap replacements do.
Installation Notes
Always install caps on cool engines to avoid burns from hot coolant. Check the radiator neck for damage or corrosion that could prevent proper sealing. A good cap can’t seal on a damaged neck. The bayonet design means you just line up the tabs, push down, and twist to lock—much easier than fighting with stubborn threads on the old style caps.






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