When you start noticing oil spots under your Ford New Holland tractor or catch that telltale smell of transmission fluid around the drop box, a worn input shaft seal is usually the problem. This small but critical seal keeps your transmission fluid where it belongs - inside protecting your gears and bearings - instead of dripping onto the ground or attracting dirt and debris that can cause bigger problems down the road. What You're Getting Precise 36x50x10mm dimensions that ensure proper fit and effective sealing Quality seal material that resists transmission fluid and temperature swings Designed to handle constant rotation and pressure changes from normal operation Direct replacement that prevents fluid loss and contamination Built for Real Farm Work This seal fits the workhorses of many farm operations - Ford New Holland 40 series tractors like your 5640, 6640, 7740, 7840, 8240, and 8340, plus late model TS series including TS80, TS90, TS100, TS110, and TS115. These are the machines handling everything from field prep and planting to hay work and loader duties around the farmyard, where reliable sealing keeps you working instead of dealing with fluid leaks. Made to Last Farm equipment faces tough conditions, and this seal is engineered to handle the constant movement and pressure that input shafts see during normal operation. The quality materials maintain flexibility across temperature ranges while standing up to the chemicals in modern transmission fluids, giving you reliable sealing that prevents both fluid loss and contamination. Installation Notes This seal typically requires removing input shaft components, so it's smart to tackle this during other transmission service to save on labor. Clean the seal bore thoroughly and check your shaft for wear before installing the new seal. If you've got an early TS series tractor, you'll need part number 409713 instead.