Overview
The ZF 0501.220.216 PUMP is a critical hydraulic component engineered specifically for the WG 98 Series transmission family. This OEM genuine part generates the necessary oil flow and pressure to actuate clutch packs, lubricate bearings, and cool internal assemblies. Positioned within the front pump housing, it draws fluid from the sump and delivers it to the valve body. The SKU 0501.220.216 is the direct replacement for the original factory unit, ensuring precise volumetric output and pressure regulation. When paired with a properly sealed 4950101004: HOUSING, this pump maintains system integrity under heavy loads.
Symptoms of Failure
- Delayed engagement or gear slipping — A worn pump cannot build adequate pressure, causing hesitation when shifting from neutral to drive or reverse.
- Intermittent low-pressure warnings — Dashboard or diagnostic alerts for insufficient line pressure, especially during hot operation or sustained highway speeds.
- Audible whining or cavitation noise — Air ingestion due to a failing pump or a compromised 0734309932: SHAFT SEAL creates a high-pitched sound under load.
- Oil leaks around the pump housing — External seepage from the pump mounting area, often accompanied by fluid loss and eventual overheating.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0501.220.216 |
| OEM Reference | ZF 0501.220.216 |
| Material | High-strength aluminum alloy with hardened steel gears |
| Weight | 2.8 kg (6.2 lbs) |
| Overall Dimensions | 180 mm x 120 mm x 95 mm |
| Operating Pressure Range | 8–18 bar (116–261 psi) |
| Flow Rate | 22 L/min at 1500 RPM |
Compatibility
This pump is designed for the ZF WG 98 Series transmissions, including models such as WG180, WG200, WG210, and WG220. It is also compatible with select WG 98 variants used in off-highway and construction equipment. The pump mounts directly to the 4950301018: HOUSING I and interfaces with the 4660101023: TRANSMISSION HOUSING to complete the hydraulic circuit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4950101004 | HOUSING | Encloses the pump assembly and directs fluid flow |
| 4950301018 | HOUSING I | Intermediate housing supporting pump alignment |
| 0734309932 | SHAFT SEAL | Prevents oil leakage at the pump drive shaft |
| 4660101023 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4660301058 | HOUSING | Secondary housing for auxiliary pump sections |
| 0631306174 | CYLINDRICAL PIN | Locates and aligns housing components |
| 0750100022 | SCREW PLUG | Seals test ports and drain passages |
| 4660301009 | BRACKET | Mounts external lines and sensors |
| 4660221039 | TUBE | Conducts pressurized oil between assemblies |
| 0636103274 | CAP SCREW | Secures the pump to the housing flange |
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