Overview
The ZF 4616.302.139 FLANGE is a critical driveline component engineered specifically for the WG 65 Series transmission. This OEM genuine part serves as the primary interface between the transmission output shaft and the propeller shaft, ensuring precise torque transfer and rotational alignment. Located at the rear of the gearbox, the flange securely couples the driveline while accommodating minor angular misalignments during operation. The SKU 4616.302.139 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications.
Symptoms of Failure
- Transmission oil leaks at the rear seal: A worn or damaged 4616.302.139 flange often causes fluid seepage around the output shaft seal, leading to low oil levels and potential gear damage.
- Vibration during gear engagement: When the flange’s splines or mating surface degrade, operators may notice excessive driveline shudder, especially under load or when shifting between forward and reverse.
- Clunking noise from the driveline: Loose fitment or corrosion on the flange can produce metallic knocking sounds during acceleration or deceleration, indicating imminent failure.
- Premature wear of the output bearing: A misaligned flange places uneven stress on the 4616105415: OUTPUT assembly, accelerating bearing fatigue and reducing transmission lifespan.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.302.139 |
| Material | Forged steel, induction-hardened |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 165 mm |
| Bolt Circle Diameter | 130 mm |
| Spline Count | 24 (internal) |
| OEM Reference | ZF 4616.302.139 |
Compatibility
This flange is designed for the ZF WG 65 Series transmission family, which includes models such as the WG65, WG80, WG120, WG150, WG180, and WG200. It is also compatible with select ZF off-highway and marine gearboxes that share the same output shaft spline pattern. Always verify your transmission model and output shaft configuration before ordering. The flange works in conjunction with the 4616303144: OUTPUT FLANGE and the 4616101094: TRANSMISSION HOUSING to form a sealed, rigid assembly. Secure installation requires the use of 0636011038: HEXAGON SCREW fasteners torqued to factory specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | OUTPUT | Transfers torque from gearset to flange |
| 4616303144 | OUTPUT FLANGE | Secondary flange for dual-output configurations |
| 4616101094 | TRANSMISSION HOUSING | Encloses and supports internal components |
| 0636011038 | HEXAGON SCREW | Secures flange to output shaft |
| 0636011118 | HEXAGON SCREW | Mounting bolt for housing cover |
| 0636016015 | HEXAGON SCREW | High-tensile fastener for flange retention |
| 0631306085 | CYLINDRICAL PIN | Alignment pin for flange centering |
| 0634313118 | O-RING | Seals flange-to-housing interface |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration element |
| 0634303718 | O-RING | Secondary seal for output cover |
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