ZF 4044.301.111 WASHER | OEM Genuine Part

Overview

The ZF 4044.301.111 WASHER is a precision-engineered OEM genuine component designed to function as a critical load-distribution and sealing interface within heavy-duty ZF construction machinery transmissions. This hardened steel washer sits between the transmission housing and hydraulic control components, preventing metal-on-metal wear and maintaining proper axial clearance. The SKU 4044.301.111 is specifically manufactured to ZF’s exacting tolerances, ensuring that clamping forces from fasteners are evenly distributed across the mating surface. In a typical assembly, this washer works in concert with the 4143101009: HOUSING and the 4143301025: HOUSING to create a stable mounting platform for valve bodies and clutch packs.

Symptoms of Failure

• Transmission fluid seepage at housing joints: When the 4044.301.111 washer deforms or develops stress fractures, it fails to provide adequate sealing pressure, leading to slow oil leaks around the 0634313603: O-RING interface.
• Intermittent gear slippage under load: A compressed or worn washer reduces clamping force on internal valve assemblies, causing hydraulic pressure drops that manifest as hesitation or slipping during heavy excavation work.
• Abnormal metallic rattling from the bell housing: Loss of washer thickness creates excessive end-play in the shaft assembly, producing a distinct rattle that worsens as transmission oil temperature rises.
• Torque converter shudder during low-speed maneuvering: Uneven washer wear disrupts the alignment between the pump housing and stator support, generating vibration that is most noticeable at idle and crawl speeds.

Technical Specifications

Compatibility

This washer is a standard fitment across ZF’s WG-series powershift transmissions commonly deployed in wheel loaders, telehandlers, and excavators. Based on its dimensional profile and application in housing bolt patterns, the 4044.301.111 is compatible with the following ZF transmission models: WG180, WG200, WG210, and WG310. It is also found in certain 4WG-200 and 6WG-310 variants where it secures the 4475280018: SCREW PLUG assembly against the main housing. Always verify the washer thickness against your original part before installation, as aftermarket substitutes often use softer materials that accelerate wear.

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