A key component of the modern injection system, the Common Rail fuel rail 333/C9306 in GX-OEM quality. Designed specifically for JCB JS excavators equipped with Isuzu 4HK1 engines. The rail acts as a precision high-pressure accumulator – it stores fuel compressed by the high-pressure pump and distributes it evenly to the injectors, ensuring stable engine operation and optimal injection.
By choosing GX-OEM parts, you are choosing uncompromising first-assembly quality. Our products are made 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.
| Brand | Type / Series / Model |
|---|---|
| JCB | JS Excavators (equipped with Isuzu 4HK1 engine) |
The list above is for reference. The key compatibility criterion is that the machine has an Isuzu 4HK1 engine.
When replacing the fuel rail, we recommend inspecting the condition of the pressure sensor on the rail and the pressure relief valve. It is also crucial to check the high-pressure lines (replacement is recommended).
The Common Rail system operates under extremely high pressure (over 1600 bar). A cracked rail or line can result in a fine mist of atomized fuel, which is extremely flammable and poses a severe fire hazard. Leaks lead to a drop in pressure and loss of power. Never loosen any connection while the engine is running.
The Common Rail fuel rail is a thick-walled reservoir that acts as an accumulator for high-pressure fuel. Its job is to dampen pressure pulses from the high-pressure pump and provide constant, stable pressure to all injectors, regardless of the engine's firing order.
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No. This model (333/C9306) is specifically designed for JCB JS excavators (usually larger models) equipped with an Isuzu 4HK1 engine. 3CX/4CX machines with Perkins or JCB Dieselmax engines use completely different fuel rails.
No, this part number refers to the rail body (accumulator) itself. The pressure sensor and pressure relief valve (if present) must be transferred from the old rail or purchased separately.
These are interchangeable (alternative) numbers for the same part. 02/802216 is likely an older part number that has been superseded by 333/C9306. Both references fit the same machines.
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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Fuel rail suitable for JCB JS excavators

















