ZF 3035.301.026 COVER for WG65 | OEM Genuine Part

Overview

The ZF 3035.301.026 COVER is a critical sealing and protective component engineered specifically for the WG65 series of off-highway transmissions. This OEM genuine part encloses the valve body or clutch housing section, preventing contamination ingress and maintaining internal hydraulic pressure. The SKU 3035.301.026 is precision-cast to ZF’s original specifications, ensuring a perfect mating surface against the TRANSMISSION HOUSING. Without this cover, the transmission’s internal lubrication circuit cannot function correctly, leading to rapid wear of planetary gearsets.

Symptoms of Failure

• Hydraulic fluid seepage around the WG65 casing: A warped or cracked cover allows oil to escape, often visible as wet streaks near the bell housing. Search query: “ZF transmission cover oil leak symptoms.”
• Erratic gear engagement or delayed shifting: Loss of internal pressure from a compromised cover causes clutch packs to slip. Search query: “WG65 transmission slipping when hot.”
• Contaminated transmission fluid: A failed seal allows dirt or water to enter through the cover joint, leading to premature filter clogging. Search query: “dirty transmission fluid after cover replacement.”
• Audible whining or knocking from the transmission: Misalignment of the cover can create vibration against the housing, indicating the need for new HEXAGON SCREW fasteners.

Technical Specifications

Compatibility

This cover is primarily designed for the ZF WG65 series, but it also fits select variants of the WG180, WG200, and WG250 transmissions when used in construction equipment like loaders and graders. Always verify the casting number on your existing cover. For secure installation, pair this cover with the correct HEXAGON SCREW (M10 x 30 mm) and the HEXAGON SCREW (M12 x 35 mm) for the lower mounting points.

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