Description
When you’re working with modern John Deere engines, water contamination in your diesel fuel isn’t just a minor issue—it’s a fast track to expensive injection pump and injector damage. Modern diesel injection systems operate at extremely high pressures with very tight tolerances, making them sensitive to both water contamination that older engines could handle. This water-in-fuel sensor alerts you to moisture problems before they cause damage, giving you time to drain the water separator and fix the problem before it shuts you down in the middle of a field.
What You’re Getting
- Early warning system that alerts you to water contamination before expensive damage occurs
- Works with your tractor’s fuel system monitoring to trigger dashboard warnings
- Precise detection that responds quickly when moisture levels become dangerous
- Rugged construction that handles the vibration and temperature swings of farm work
- Direct replacement that restores your fuel system’s protection features
Built for Real Farm Work
This sensor fits an impressive range of John Deere tractors from the utility 5E series through the big 7R row-crop machines. Whether you’re running a 5090E around the farmyard, pulling implements with a 6155R, or powering through heavy field operations with a 7250R, this sensor keeps watch over your fuel system. It’s designed for the demanding conditions these tractors face—long hours, temperature cycling, and the moisture problems that come with farm-stored diesel fuel.
Made to Last
Baldwin has been making filters for decades, and they know what it takes to handle farm conditions. The filter media is designed to trap water and particles while maintaining proper fuel flow, and the housing stands up to temperature swings and engine vibration. The sensor elements resist corrosion from fuel additives and provide consistent readings season after season.
Installation Notes
This sensor threads into your fuel water separator housing where the old one came out. Clean the threads thoroughly before installation and don’t over-tighten—the sensor seals properly with moderate torque. If your tractor’s been giving water contamination warnings, check the separator bowl for accumulated water and drain it completely before installing the new sensor.



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