ZF 4699.035.003 GP35 | OEM Genuine Part

Overview

The ZF 4699.035.003 GP35 is a genuine OEM gear pump assembly engineered for high-pressure hydraulic actuation within ZF powershift transmissions. This critical component delivers consistent oil flow to the torque converter and clutch packs, ensuring smooth power transfer in heavy construction machinery. The SKU 4699.035.003 mounts directly to the transmission housing and interfaces with the HOUSING to maintain system pressure. As a direct replacement part, it restores original ZF performance specifications without requiring adapter plates or modifications.

Symptoms of Failure

• Delayed engagement or gear slipping under load: When the GP35 pump loses volumetric efficiency, clutch pack pressure drops, causing hesitation when shifting from neutral to drive in wheel loaders or dozers.
• Erratic transmission temperature spikes: A worn pump fails to circulate sufficient oil through the cooler, leading to overheating during extended operation in excavators or graders.
• Whining or cavitation noise from the transmission: Air ingestion due to worn seals or scored pump gears produces a high-pitched sound, often accompanied by foamy oil on the dipstick.
• Low system pressure at idle: If the machine struggles to move immediately after startup, the pump may be unable to maintain minimum standby pressure, requiring replacement of the 4699.035.003.

Technical Specifications

Compatibility

This genuine ZF GP35 pump is designed for use in the WG180, WG200, and WG211 series powershift transmissions commonly found in construction machinery. It directly replaces the earlier 4699.035.001 and 4699.035.002 variants. The pump integrates with the INPUT shaft assembly and delivers pressurized oil to the OUTPUT clutch circuits. For machines equipped with integrated braking systems, the pump also supplies oil to the BRAKE PARTS group. Always verify your transmission model tag before ordering.

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