Overview
The ZF 4616.337.003 BUSH is a precision-engineered wear component designed for the WG65 series transmission. This OEM genuine part functions as a critical bearing surface within the planetary gear set, reducing friction between rotating shafts and stationary housings. Installed directly inside the TRANSMISSION HOUSING, this bushing ensures smooth torque transfer and maintains proper gear alignment under heavy loads. The SKU 4616.337.003 is manufactured to ZF’s exacting tolerances, guaranteeing a service life that matches the original assembly specifications.
Symptoms of Failure
- Whining or grinding noise from the transmission – When the bushing wears, metal-on-metal contact creates a distinct high-pitched whine during acceleration or deceleration, often misdiagnosed as gear noise.
- Oil leaks near the output shaft seal – A worn 4616.337.003 bushing allows excessive shaft play, which distorts the seal lip and causes transmission fluid to weep from the rear housing joint.
- Delayed engagement or gear slipping – Excessive bushing clearance reduces hydraulic pressure in the clutch packs, leading to soft shifts or momentary loss of drive power under load.
- Vibration in the driveline at highway speeds – Worn bushings allow the output shaft to wobble, transmitting harmonic vibrations through the OUTPUT FLANGE and into the driveshaft.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.337.003 |
| Material | Phosphor bronze with PTFE liner |
| Inner Diameter | 45.00 mm |
| Outer Diameter | 55.00 mm |
| Length | 30.00 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 4616.337.003 |
| Hardness | HRB 85-95 |
Compatibility
This bushing is specifically engineered for the ZF WG65 series transmissions, including models WG65, WG80, WG120, WG150, WG180, and WG200. It is also used in certain off-highway variants such as the WG65-2 and WG65-3. The part directly interfaces with the OUTPUT shaft and is secured using a HEXAGON SCREW during assembly. Always verify your transmission serial number against ZF’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from planetary gearset to output flange |
| 4616203017 | OUTPUT FLANGE | Connects transmission to driveshaft yoke |
| 4616101117 | TRANSMISSION HOUSING | Main structural casing for gear and shaft assembly |
| 0636011038 | HEXAGON SCREW | Secures bushing retaining plate to housing |
| 0636016015 | HEXAGON SCREW | Fastens output flange to output shaft |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals oil passage between housing and cover |
| 0732611049 | FILTER INSERT | Traps debris in hydraulic circuit |
| 0634303718 | O-RING | Seals output shaft bore in housing |
| 0636610082 | STUD | Provides threaded mounting point for valve body |
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