ZF 4699.819.010 GP19 | OEM Genuine Part

Overview

The ZF 4699.819.010 GP19 is a genuine OEM gear pump assembly designed for integration within ZF heavy-duty powershift transmissions used in construction machinery. This part, referenced by SKU 4699.819.010, serves as the primary hydraulic pressure source for clutch actuation, lubrication, and cooling circuits. It mounts directly to the transmission housing and is driven by the input shaft. For optimal sealing and flow integrity, this pump is often replaced alongside the 4699101171 HOUSING and the 4699102187 INPUT shaft assembly.

Symptoms of Failure

• Intermittent gear slipping under load: Worn internal rotors in the GP19 cause pressure drops, leading to clutch pack disengagement during heavy digging or grading operations.
• Hydraulic oil leaks from the pump mounting face: Degraded seals on the 4699.819.010 allow transmission fluid to weep externally, often mistaken for a housing crack.
• Slow or delayed gear engagement: Reduced volumetric efficiency from the pump results in sluggish clutch fill times, especially in cold-start conditions.
• Elevated transmission operating temperature: A failing GP19 cannot circulate sufficient oil through the cooler, causing thermal runaway in the 4699103124 OUTPUT section.

Technical Specifications

Compatibility

This genuine 4699.819.010 GP19 pump is engineered for ZF powershift transmissions commonly found in wheel loaders, dozers, and telehandlers. It is directly compatible with the following ZF models:

• WG180 series (WG180, WG180/II)
• WG200 series (WG200, WG200/II)
• WG210 series (WG210, WG210/II)
• WG310 series (WG310, WG310/II)

When servicing these transmissions, always inspect the 4699019007 GP19 companion pump for matched wear patterns. The pump drive tang interfaces directly with the 4699102187 INPUT shaft, and the discharge port aligns with the 4699101171 HOUSING casting.

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