Description
When you’re out running your Massey 300 series and notice hydraulic fluid spots under the tractor or hear that telltale whine from the rear end, chances are good this little seal is the culprit. This outer half shaft oil seal keeps hydraulic fluid where it belongs—inside the epicyclic final drive—while keeping dirt and moisture from getting in and causing expensive damage. It’s one of those parts that doesn’t cost much but saves you from a whole lot of headaches down the road.
What You’re Getting
- Exact fit with that 73mm inner diameter, 102mm outer diameter, and 16.5mm width—no guessing or modifications needed
- Double-lip design that seals better and lasts longer than single-lip seals, especially important on hard-working farm tractors
- Quality rubber compound that won’t break down from hydraulic fluid or temperature swings you get in real farm conditions
- Metal case construction that stays put once installed and won’t distort under pressure
Built for Real Farm Work
The Massey Ferguson 300 series tractors were workhorses of the 1980s and 1990s, handling everything from grain production to dairy farming. Whether you’ve got a mid-range 362-375 for medium operations or one of the powerful 390-399 series for heavy cultivation and harvesting, these tractors’ epicyclic final drives gave you the traction and ground clearance to get work done in tough conditions.
Made to Last
This seal maintains critical hydraulic fluid containment while protecting internal components from dirt and moisture contamination. The precision-molded design handles the constant movement and pressure changes that come with real field work, while the quality materials resist the breakdown that cheaper seals suffer from exposure to hydraulics and temperature extremes.
Installation Notes
You’ll need to pull the rear wheel and do some disassembly of the final drive housing, so plan on having the tractor down for a bit. Clean everything thoroughly and check that half shaft for wear while you’re in there—a scored shaft will eat up your new seal in no time. Don’t forget the sealant on the outer diameter like your service manual specifies.
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