Overview
This OEM genuine ZF 4108.014.044 P 3300 is a high-pressure hydraulic pump assembly engineered specifically for the internal lubrication and control circuits of heavy-duty construction machinery transmissions. Positioned within the transmission’s valve body or auxiliary drive housing, this component generates the precise oil flow required to actuate clutch packs, maintain cooler circulation, and provide consistent bearing lubrication under extreme loads. The SKU 4108.014.044 designates a factory-sealed unit built to ZF’s original tolerances, ensuring direct bolt-on replacement without modifications. As a critical fluid power element, its failure directly compromises shift quality and thermal management in wheel loaders, graders, and excavators.
Symptoms of Failure
When the ZF 4108.014.044 pump assembly begins to degrade, operators will notice distinct operational anomalies. Below are the most common failure indicators that signal immediate replacement is necessary:
- Erratic or delayed gear engagement – Insufficient hydraulic pressure from a worn pump causes clutches to slip or engage harshly, particularly under load or during cold starts.
- Persistent transmission overheating – A failing pump reduces oil flow to the cooler, leading to rapid temperature spikes even during moderate operation.
- Audible whining or grinding noise – Cavitation or bearing wear inside the pump produces a high-pitched whine that increases with engine RPM, often accompanied by metallic debris in the oil filter.
- Visible external oil seepage – Cracks in the pump housing or degraded shaft seals allow fluid to escape, leaving wet spots around the transmission bell housing or valve cover.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4108.014.044 (ZF P 3300) |
| Pump Type | Gear pump, fixed displacement |
| Housing Material | High-strength aluminum alloy (EN AC-46000) |
| Dry Weight | 4.85 kg (10.7 lbs) |
| Overall Dimensions (L x W x H) | 195 mm x 85 mm x 95 mm |
| Displacement | 18.5 cm³/rev |
| Max Operating Pressure | 28 bar (406 psi) |
| Flange Mount Pattern | SAE A 2-bolt (82.5 mm pilot) |
Compatibility
This genuine ZF pump assembly is designed for use in the following ZF transmission families commonly found in construction machinery. Always verify your transmission’s serial number against the OEM parts catalog before ordering.
- ZF WG180 – Power shift transmissions for wheel loaders and telehandlers (200–250 hp range).
- ZF WG200 – Heavy-duty series used in articulated dump trucks and graders.
- ZF 4WG-200 – Four-speed countershaft variant requiring the P 3300 pump for clutch modulation.
- ZF 6WG-250 – Six-speed powershift unit; the 4108.014.044 serves as the primary lube pump.
- ZF Ergopower (Ecomix) – Select concrete mixer and airport ground support equipment models.
Note: This part is not interchangeable with the smaller P 3100 series pump. Cross-reference your existing part number to confirm fitment.
