ZF 5838.300.479 VALVE for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 5838.300.479 VALVE is a precision-engineered hydraulic control component designed for the WG100, WG130, and WG131 transmission series. This OEM genuine part regulates oil flow and pressure within the valve body assembly, ensuring precise clutch engagement and smooth gear shifts. As a critical element of the transmission’s hydraulic circuit, the SKU 5838.300.479 directly influences shift timing and torque converter lock-up. When installed alongside the 5838022003: REAR AXLE and the 5838109001: DIFFERENTIAL, this valve maintains consistent lubrication and pressure distribution across the drivetrain.

Symptoms of Failure

• Delayed or harsh gear engagement: A worn 5838.300.479 valve often causes hesitation when shifting from neutral to drive or reverse, as hydraulic pressure drops below required thresholds.
• Erratic shift patterns: You may notice unexpected upshifts or downshifts, especially under load, due to internal leakage past the valve spool.
• Transmission overheating: When the valve fails to regulate cooler flow, the system can exceed normal operating temperatures, accelerating wear on the 0750117075: TAPER ROLLER BEARING and other rotating components.
• Oil seepage around the valve body: Cracks or O-ring degradation in the valve housing lead to external fluid loss, often visible as drips near the transmission pan.

Technical Specifications

Compatibility

This valve is engineered for ZF’s WG-series powershift transmissions, specifically the WG100, WG130, and WG131 models. It also fits the WG180 and WG200 series when used in auxiliary hydraulic circuits. The part integrates directly with the 5838300128: DIFFERENTIAL HOUSING to manage oil flow to the final drive assembly. For optimal performance, always pair this valve with the correct 0631329086: SPRING PIN for secure mounting.

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