Description

When your transmission starts making noise in certain gears or you’re getting hard shifting, one of the first places to look is the constant mesh gears. This 45-tooth bottom gear sits in the heart of your transmission, constantly engaged and spinning every time you’re moving. If it’s worn or damaged, you’ll know it – grinding sounds, jumping out of gear, or that metallic chatter that tells you something’s not right in the gearbox.

What You’re Getting

Precision-cut 45 teeth for smooth power transfer and proper gear mesh
Heat-treated steel construction that handles the constant load and stress
Direct replacement for the original bottom constant mesh gear
Quality manufacturing ensures proper fit with existing transmission components
Built to handle the demands of daily farm work without premature wear

Built for Real Farm Work

This gear fits a wide range of Massey Ferguson tractors from the compact 100 series utility machines through the powerful 4300 series row-crop tractors. Whether you’re running a 35-horsepower 155 for chores and light tillage or pushing a 100-horsepower 4345 through heavy field work, this constant mesh gear keeps power flowing smoothly through your transmission. These tractors handle everything from loader work and mowing to planting, cultivating, and harvest operations.

Made to Last

Transmission gears take tremendous punishment – they’re under load whenever you’re moving and deal with shock loads from implements and rough ground. This gear uses proper heat treatment and steel composition to resist wear and tooth breakage. The precise tooth geometry ensures smooth meshing with other gears, reducing noise and extending the life of your entire transmission.

Good to Know

Replacing constant mesh gears requires splitting the tractor and disassembling the transmission – this is a job for someone with transmission experience and proper tools. While you’ve got the transmission apart, it’s smart to inspect all gears, synchronizers, and bearings. Check gear oil condition too – metal particles in the oil tell you other components may be wearing. Always use the recommended gear oil and keep it clean.