Description
When your John Deere 40 series is pulling heavy implements through the field or running the PTO for hours on end, the last thing you want is an overheating problem shutting you down. A worn radiator cap that’s lost its pressure rating can turn a productive day into a costly breakdown. This 15 PSI cap maintains the exact pressure your cooling system needs to handle the heat these hardworking engines generate.
What You’re Getting
- Precise 15 PSI pressure rating that raises coolant boiling point for better heat protection
- Dual-valve design with pressure relief and vacuum functions for optimal system operation
- Heavy-duty spring construction that maintains calibration through years of use
- Quality seal that prevents coolant loss and keeps contaminants out
- Direct replacement for original equipment – no modifications needed
Built for 40 Series Power
Your 4040, 4240, or 4440 packs serious horsepower that generates substantial heat during demanding work. Whether you’re running a chisel plow in tough ground, pulling a big cultivator, or operating heavy PTO equipment, these engines work hard and need a properly pressurized cooling system to stay cool and reliable.
Made to Last
This cap is built to handle the demanding conditions these tractors see every day. The spring maintains proper pressure year after year, while the seal stays flexible to prevent the gradual pressure loss that plagues cheaper caps. Quality construction ensures reliable operation through countless heat cycles and temperature extremes.
Good to Know
Installation is straightforward – just remove the old cap and thread on the new one. While you’ve got the radiator open, it’s a good time to check coolant level and condition. Keep a spare cap handy during busy seasons when downtime costs money. Using the correct 15 PSI rating is crucial – other pressure ratings can cause overheating or damage expensive cooling components.
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