ZF 4642.121.079 OIL PIPE for WG150 | OEM Genuine Part

Overview

The ZF 4642.121.079 OIL PIPE is a precision-engineered fluid conduit specifically designed for the WG 150 series transmission. This OEM genuine part ensures consistent lubrication and hydraulic pressure delivery to critical internal components, directly influencing shift quality and thermal management. Positioned within the valve body and clutch pack circuit, the 4642.121.079 oil pipe directs pressurized ATF to rotating assemblies, preventing dry starts and reducing friction wear. As a factory-spec component, this SKU guarantees exact fitment and material integrity for long service intervals.

Symptoms of Failure

When the 4642.121.079 OIL PIPE degrades or cracks, operators often report erratic gear engagement during low-speed maneuvers. A second common indicator is visible transmission fluid seepage around the pipe junctions, particularly after thermal cycling. Advanced wear may produce audible whining or cavitation noises from the pump area due to insufficient oil volume reaching the torque converter. Finally, delayed forward or reverse engagement on cold starts frequently points to compromised oil delivery through this pipe.

Technical Specifications

Compatibility

This oil pipe is primarily engineered for the ZF WG 150 series, but cross-referencing suggests compatibility with WG 180 and WG 200 transmissions when used in conjunction with the correct TRANSMISSION HOUSING (4642101109). It also fits select WG 120 variants that share the same valve body architecture. Always verify the pipe routing against the TYPE PLATE (0730365125) on your unit to confirm application. The pipe interfaces directly with the TRANSMISSION HOUSING (4642301205) and is secured using the GROOVED STUD (0631311009) for vibration resistance.

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