A high-quality complete lower idler pulley 320/08624 for the multi-ribbed belt, by GX-AFTER. This is a key engine accessory component, fitted to JCB machines (e.g., 3CX, 4CX) manufactured after 2005 and equipped with a JCB DieselMax or JCB EcoMax engine. The 120mm diameter pulley comes pre-assembled with a bearing, ready for installation.
GX-AFTER is the smart choice for your machine. We provide high-class replacements that combine excellent quality with an attractive price. Each part is carefully verified to ensure full compatibility and reliability you can depend on.
| Brand | Type / Series / Model |
|---|---|
| JCB | Backhoe Loaders: 2CX, 2DX, 3CX, 4CX, 5CX, MIDI CX (with DieselMax/EcoMax engines, post-2005) |
| JCB | Telehandlers (Loadall): Wide range (with DieselMax/EcoMax engines) |
| JCB | Wheel Loaders: Wide range (with DieselMax/EcoMax engines) |
| JCB | JS Excavators (Tracked & Wheeled): (with DieselMax/EcoMax engines) |
| JCB | Skid Steer Loaders (Robot): (with DieselMax/EcoMax engines) |
| JCB | Rough Terrain Forklifts (RTFL): (with DieselMax/EcoMax engines) |
| JCB | Other: Vibromax, Generators, FASTRAC, TELETRUK (with DieselMax/EcoMax engines) |
| JCB | Engines: 320/40001 to 320/49999 (DieselMax), 320/50001 to 320/55000 (EcoMax) |
The list above is for reference. This pulley fits most JCB machines produced after 2005 with a JCB DieselMax or EcoMax engine.
The 320/08624 pulley is a key part of the belt system. When replacing it, we also recommend replacing the multi-ribbed belt (e.g., 320/08598 or 320/08608), the upper idler pulley, and the complete belt tensioner.
A failed idler pulley bearing will seize and generate extreme heat. This can melt the pulley and cause the drive belt to snap. A snapped belt means an immediate loss of charging (alternator failure) and loss of cooling (water pump failure), which will lead to engine overheating and seizure within minutes.
The 320/08624 lower idler pulley is fixed to the engine block. Its job is to guide the multi-ribbed belt at the correct angle, ensuring it wraps properly around the crankshaft pulley and alternator, and maintaining correct tension in the entire accessory drive system.
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No, this is the lower idler (guide) pulley, which is fixed. The tensioner (with the spring mechanism) is a separate component, although it often uses a similar-looking pulley.
A squeal is usually a slipping belt. A whine or grinding noise is a sign of a failed bearing in a pulley (like this one), the tensioner, the alternator, or the water pump. A failed bearing will add drag, which can also cause the belt to squeal.
No. This pulley (320/08624) is exclusively for newer machines (post-2005) with the JCB DieselMax or EcoMax engine. Older machines with Perkins engines have a completely different accessory drive system and use different pulleys.
Masz wątpliwości lub potrzebujesz potwierdzenia, aby uniknąć kosztownego przestoju? Zadzwoń do nas. Nasi eksperci pomogą dobrać właściwą część, aby Twój sprzęt jak najszybciej wrócił do pracy.
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Pulley lower idler suitable for JCB 3CX, 4CX machines after 2005. with JCB DieselMax / EcoMax engine.

















