Triumph Gearbox Bearing Rebuild Repair Kit TR4 TR4A TR5 250 4 Synchro Overdrive

The listed item featured is the overhaul rebuild and repair kit for the Triumph TR3B (TCF) TR4 TR4A TR5 250 4 Synchro Gearbox Overdrive.

The kit supplied is for the Triumph TR3B (TCF Version), TR4, TR4A, TR5, TR250 4 Synchro Gearbox Overdrive Version. This kit consists of all the main bearings (shell or caged type needle roller options), oil seals and main gaskets for the complete rebuild of the gearbox transmission (see part numbers included in description). The original RHP brand bearings have been discontinued, but we’ve sourced high-quality replacements from leading aftermarket suppliers. These main bearings have undergone extensive testing and have consistently delivered strong performance in our transmission rebuilds, ensuring durability and a precise fit.

The contents of the rebuild kit consist of the following parts:

1 x Gearbox Bearing Input 1st Motion Shaft

Brand: KSM

Part No: 58391

Size Details: MJ11/4N

1 x Gearbox Bearing Main Shaft

Brand: KSM

Part No: 58391

Size Details: MJ11/4N

1 x Gearbox Bearing Needle Roller Spigot

Part No: 145008

2 x Gearbox Bearing Layshaft Needle Roller Torrington

Part No: 150339

2 x Gearbox Bearing Layshaft Needle Roller Shell Type

Part No: 126862

1 x Gearbox Bearing Needle Roller 3rd Motion

Part No: 158368

1 x Gearbox Front Oil Seal

Part No: 141756

1 x Gearbox Rear Oil Seal

Part No: GHS179

1 x Gearbox Lay Shaft

Part No: 128105

1 x Gearbox Gasket Lid

Part No: (105758)

1 x Gearbox Gasket Rear

Part No: (132465)

1 x Gearbox Gasket Front

Part No: (59537)

1 x Gearbox Gasket Lay Shaft

Part No: (55774)

1 x Gearbox Gasket Overdrive - Adaptor Plate to Overdrive

Part No: (502556)

This item fits the following vehicle models:

• Triumph - TR3 (TR3B(TCF) Version and NOT TR3B(TSF)) (1955-1962)
• Triumph - TR4 (1961-1967)
• Triumph - TR5 (1967-1968)