Replacement 5th gear syncro assembly for the mainshaft of the Land Rover LT77 gearbox. Fits Defender and Discovery 1 models equipped with this transmission.
This syncro assembly helps ensure smooth and quiet engagement of 5th gear. It is commonly replaced during a gearbox rebuild or when the original shows wear that causes grinding, difficult shifting, or noisy operation in top gear.
A direct-fit replacement part for restoring precise and reliable 5th gear engagement.




