ZF 4642.121.074 OIL PIPE for WG150 | OEM Genuine Part

Overview

The ZF 4642.121.074 OIL PIPE is a critical fluid delivery component engineered specifically for the WG 150 series transmission. This OEM genuine part channels pressurized hydraulic oil from the pump to the valve body and clutch assemblies, ensuring precise lubrication and cooling within the gear train. Without this pipe, the transmission cannot maintain the necessary oil flow for proper shift timing and thermal management. The SKU 4642.121.074 is machined to exact OEM tolerances, making it a direct replacement for worn or damaged units in heavy-duty industrial applications.

Symptoms of Failure

• Oil leaks around the transmission housing: A cracked or corroded 4642.121.074 oil pipe often causes visible fluid seepage near the 4642101108: TRANSMISSION HOUSING or 4642301208: TRANSMISSION HOUSING, leading to low oil levels.
• Gear slipping under load: When the oil pipe becomes blocked or fractured, hydraulic pressure drops, causing clutches to slip during acceleration or hill climbing.
• Overheating and erratic shifting: Restricted oil flow through a failing pipe results in inadequate cooling, triggering thermal warnings and harsh or delayed gear engagements.
• Contaminated oil with metal particles: A broken pipe can shed debris into the fluid circuit, accelerating wear on valves and bearings.

Technical Specifications

Compatibility

This oil pipe is primarily designed for the ZF WG150 transmission, but it also fits select variants of the WG180 and WG200 series due to shared hydraulic architecture. Always verify fitment by cross-referencing the 0730365125: TYPE PLATE on your transmission. The pipe mounts securely using a 0631311009: GROOVED STUD and mates with the oil pump outlet. For complete assembly, ensure the housing surfaces are clean and free of debris.

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