ZF 4646.301.202 HOUSING for WG 250/WG 260/WG 310 | OEM Genuine Part

Overview

The ZF 4646.301.202 HOUSING is a critical structural component engineered for the WG 250, WG 260, and WG 310 transmission series. This OEM genuine part serves as the primary enclosure that houses the planetary gear sets, clutch packs, and hydraulic valve bodies, ensuring precise alignment and load distribution under high-torque conditions. As a direct replacement for the WG 251 Series, this housing maintains the dimensional integrity required for seamless integration with the transmission case. The SKU 4646.301.202 is machined from high-strength cast iron to withstand thermal expansion and mechanical stress, making it indispensable for heavy-duty industrial applications where reliability is non-negotiable.

Symptoms of Failure

• Transmission fluid seepage at the housing seam: A worn or cracked 4646.301.202 housing often leads to oil weeping between the housing and the TRANSMISSION HOUSING, causing gradual fluid loss and potential overheating.
• Gear slippage under load: When the housing distorts or develops hairline fractures, the internal gear alignment shifts, resulting in intermittent slipping during acceleration or hill climbs.
• Unusual metallic grinding noises: A degraded housing can allow debris ingress or bearing misalignment, producing a distinct grinding sound from the transmission bell housing area.
• Contaminated hydraulic fluid: Cracks in the housing permit external contaminants to mix with the transmission oil, leading to premature wear of valves and clutches.

Technical Specifications

Compatibility

This housing is specifically designed for ZF WG-series transmissions, including the WG 180, WG 200, WG 250, WG 260, and WG 310 models. It is a direct fit for the WG 251 Series and is commonly used in off-highway vehicles, agricultural tractors, and construction equipment. When replacing this component, always pair it with a new COVER and secure it using the correct CAP SCREW torque specifications. Additionally, the COVER SHEET must be inspected for wear to prevent debris bypass.

Related Components

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