ZF 4108.303.270 OIL FEED FLANGE | OEM Genuine Part

Overview

The ZF 4108.303.270 OIL FEED FLANGE is a critical OEM genuine component engineered to direct pressurized hydraulic fluid precisely into the lubrication galleries of ZF heavy-duty transmissions. Positioned at the interface between the main casing and the oil cooler circuit, this flange ensures a consistent, metered flow of transmission fluid to bearings, clutches, and planetary gear sets. The SKU 4108.303.270 is machined from high-strength aluminum alloy to withstand sustained thermal cycling and high-pressure surges common in construction machinery applications. Without this flange, the transmission’s internal lubrication network cannot maintain proper oil volume, leading to accelerated wear on adjacent components such as the 4108101068: HOUSING and the 4108201177: HOUSING.

Symptoms of Failure

• External oil seepage at the transmission housing interface: A cracked or warped oil feed flange allows pressurized ATF to escape, leaving visible drips or wet spots beneath the vehicle. This is a common “ZF transmission oil leak” search query.
• Erratic gear engagement or delayed shifting: Insufficient oil delivery due to a restricted flange passage reduces clutch pack pressure, causing “transmission slipping under load” symptoms during excavation or grading operations.
• Overheating transmission fluid: When the flange fails to route oil through the cooler circuit properly, fluid temperatures spike rapidly, triggering warning lights. This aligns with “construction equipment transmission overheating” searches.
• Whining or grinding noises from the gear train: Starvation of lubrication to the 4108301304: BEARING COVER area produces audible metal-on-metal contact, often reported as “ZF transmission whine under acceleration.”

Technical Specifications

Compatibility

This oil feed flange is designed for integration into ZF’s WG series powershift transmissions commonly found in wheel loaders, telehandlers, and graders. It directly fits the WG180, WG200, and WG210 model families. The flange also interfaces with the WG150 series when used with the appropriate 0636302056: SCREW PLUG for port sealing. Always verify the casting number on your existing flange before replacement, as variations exist between early and late production runs of these transmission models.

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