ZF 4616.303.034 OUTPUT FLANGE for WG65 | OEM Genuine Part

Overview

The ZF 4616.303.034 OUTPUT FLANGE is a critical driveline component engineered specifically for the WG 65 series of heavy-duty transmissions. This OEM genuine part serves as the mechanical interface between the transmission output shaft and the vehicle’s driveshaft, transferring rotational torque from the gearbox to the differential. Machined from high-strength alloy steel, the flange ensures precise alignment and vibration-free power delivery under extreme load conditions. The SKU 4616.303.034 is factory-tested to meet ZF’s stringent tolerances, making it a direct replacement for worn or damaged units in refuse trucks, construction equipment, and municipal vehicles.

Symptoms of Failure

When the ZF 4616.303.034 OUTPUT FLANGE begins to fail, operators typically notice these specific issues:

• Transmission fluid seepage around the output seal: A worn flange spline or cracked hub allows oil to bypass the seal, leading to low fluid levels and potential gearbox overheating.
• Driveline vibration during acceleration or deceleration: A distorted flange face or elongated bolt holes cause the driveshaft to wobble, creating a rhythmic shudder felt through the chassis.
• Metallic clicking or clunking from the rear of the transmission: Loose fit between the flange and the output shaft splines produces audible play, especially when shifting between forward and reverse gears.
• Premature wear of the output shaft bearing: An unbalanced flange places lateral stress on the bearing, accelerating fatigue and potentially leading to catastrophic failure.

Technical Specifications

Compatibility

This OUTPUT FLANGE is designed for the ZF WG 65 series transmission family, which includes models such as the WG65, WG80, and WG100. It is also compatible with select WG180 and WG200 variants that share the same output shaft spline count and pilot diameter. Always verify your transmission’s serial number against the ZF parts catalog before installation. For a complete rebuild, pair this flange with a new 4616105402: OUTPUT shaft and a 4005303005: OUTPUT FLANGE seal kit. The 4616101119: TRANSMISSION HOUSING must be inspected for cracks, and all fasteners should be replaced using a 0636011038: HEXAGON SCREW to ensure proper torque retention.

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