ZF 4699.819.011 GP19 | OEM Genuine Part

Overview

The ZF 4699.819.011 GP19 is a critical OEM genuine gear pump assembly engineered for high-pressure hydraulic actuation within ZF construction machinery transmissions. This part, identified by SKU 4699.819.011, serves as the primary fluid mover, delivering pressurized oil to the torque converter, clutch packs, and lubrication circuits. Positioned on the transmission housing, the GP19 ensures consistent hydraulic flow essential for smooth gear engagement and load-holding capability in heavy-duty equipment. When replacing this unit, technicians often pair it with the 4699019001: GP19 to verify pump alignment and mounting integrity.

Symptoms of Failure

• Intermittent gear slippage under load – A worn GP19 pump cannot maintain adequate clutch pressure, causing the transmission to slip when moving heavy materials.
• Low hydraulic pressure at idle – Operators may notice delayed engagement or weak forward/reverse response, particularly when the transmission is cold.
• Visible oil leaks from pump housing – Deteriorated seals or housing cracks around the GP19 lead to external fluid loss, often seen as drips near the bell housing.
• Excessive transmission whine or chatter – Cavitation from a failing pump produces a high-pitched noise that worsens as RPM increases.

Technical Specifications

Compatibility

This genuine GP19 pump is designed for ZF WG series powershift transmissions commonly used in wheel loaders, graders, and telehandlers. It is a direct fit for the WG180, WG200, and WG220 models. The part also integrates with earlier 4WG-200 and 6WG-200 variants. For complete assembly, ensure the 4699101152: HOUSING is inspected for wear, and verify the 4699102187: INPUT shaft splines are free of damage. The 4699103124: OUTPUT flange should also be checked for concentricity during rebuild.

Related Components