Precisely manufactured 459/30377 rear gearbox housing by GX-OEM. This transmission case component covers the rear drive output shaft. Dedicated to JCB machines (backhoe loaders, telehandlers) equipped with a 4-speed manual transmission (Synchro Shuttle).
By choosing GX-OEM parts, you serve uncompromising first-assembly quality. Our products are manufactured with the highest precision, guaranteeing a perfect fit and parameters identical to the original. This is the best investment in the long and trouble-free operation of your machine.
| Machine Type | Models |
|---|---|
| Backhoe Loaders | 3CX, 4CX (with 4-speed manual transmission) |
| Telehandlers | Loadall (models 520, 526, 530, 540 - with applicable gearbox) |
| Rough Terrain Forklifts | 926, 930, 940 (with manual transmission) |
The above list is indicative. Compatibility depends on the type of installed gearbox (Syncro Shuttle).
When replacing the rear housing, it is necessary to use a new output shaft seal and a paper gasket or silicone between the housings. It is also worth checking the condition of the output bearing.
A cracked gearbox housing risks sudden oil leakage, which can lead to transmission seizure and total machine immobilization. Oil leaks are also dangerous to the environment and pose a fire risk.
Housing 459/30377 closes the rear of the gearbox, supporting the output shaft bearing and sealing the rear drive output.
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No. This housing (459/30377) is dedicated exclusively to manual transmissions (Synchro Shuttle). Powershift gearboxes have a different rear section design.
The housing is typically sold as a "bare" casting. Seals, bearings, and gaskets must be purchased separately or transferred from the old part if functional (though we recommend new ones).
Do you have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you select the right part to get your equipment back to work as quickly as possible.
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Gearbox housing - rear drive output, suitable for JCB 3CX 4CX backhoe loaders with a manual gearbox with a 4-speed gearbox.

















