Forward Reverse Synchro 3380251M91

Forward Reverse Synchro 3380251M91 for Massey Ferguson Tractors.

More Information About Massey Ferguson Forward Reverse Synchro 3380251M91

The Massey Ferguson 3380251M91 is a Forward/Reverse synchroniser (synchro ring/assembly) used in selected Massey Ferguson tractor transmissions. It is designed for shuttle direction changes. Therefore, it helps match speeds between rotating parts before engagement. As a result, forward and reverse selection feels smoother and more controlled.

This synchroniser is commonly associated with Speedshift 16-speed transmission applications. However, it can also appear across a range of MF models depending on build and specification. For example, listings reference fitment for tractors such as 2625, 2640, 2645, 2680, 2685, 2720, 2725, 3610, 3630, 3635, 3645, 3650, 3655, 3670, 3680, 3690, 8110, 8120, 8130, 8140, 8150, and 8160. Therefore, always verify by model and serial number. Scroll down below to see what tractor models suit this part.

Synchros work hard in loader and yard work. Yet repeated shuttling accelerates wear. Then the friction surfaces can glaze. Springs and keys can weaken too. In addition, the hub can develop clearance. Therefore, symptoms begin to show. You may notice crunching into forward or reverse. You may also feel hesitation before drive takes up. Sometimes the shift becomes stiff when warm. Therefore, replacing the synchro is often the correct fix once internal wear is confirmed.

This part supports more than shift feel. It also reduces shock loading in the driveline. Moreover, it can help protect gears and selector components from repeated grinding.

Installation should be done by a competent workshop. First, diagnose properly and inspect oil for debris. Next, check related parts such as the mating gears, bearings, and selector fork. Then install the new synchro and set clearances to specification. Finally, refill with the correct oil and test shuttle engagement under load.

Choose 3380251M91 for a proper forward/reverse repair and dependable shifting, day after day.