Description

Running out of fuel during haying season or in the middle of planting isn’t just an inconvenience—it can shut you down when you can least afford it. If your fuel gauge is reading empty with a full tank, stuck on full no matter how much you’ve burned, or bouncing around like a pinball, this side-entry sender unit gets your gauge working accurately again so you always know exactly where you stand on fuel.

What You’re Getting

Side-entry design that fits the unique tank configuration of these bigger MF tractors
Longer float arm calibrated for the larger fuel capacity tanks on these models
Corrosion-resistant construction that handles today’s ethanol fuel blends
Accurate resistance range that matches your original gauge for proper readings
Direct replacement that maintains the same mounting pattern and connections

Built for Real Farm Work

These 300 series Massey Ferguson tractors are serious workhorses—from the 365 handling loader work and cultivation to the 399 pulling big implements across long days. With their higher horsepower and fuel consumption, knowing your exact fuel level prevents those costly walks back to the fuel tank when you’re working the far fields. The side-entry design of these fuel tanks puts different demands on the sender unit compared to top-mount systems.

Made to Last

Fuel senders live in a tough environment—constantly bathed in diesel, subject to vibration, and expected to work accurately for years. This replacement uses modern fuel-resistant materials that won’t deteriorate from ethanol blends like older units often do. The robust float mechanism operates smoothly through its full range, giving you linear readings that translate to reliable gauge operation.

Installation Notes

You’ll need to drain the tank completely before starting—these larger tanks hold substantial fuel, so plan accordingly. Clean around the sender opening to prevent debris from falling into the tank. Note the float arm orientation before removal since proper positioning is critical for accurate readings. Test the new sender’s movement through its full range before installation to ensure everything operates smoothly.