Overview
The ZF 4657.354.039 FLANGE is a critical driveline interface component engineered specifically for the WG210 series powershift transmission. This OEM genuine part, identified by SKU 4657.354.039, mounts directly to the output shaft assembly, providing a precision-machined coupling surface for the driveshaft yoke. It ensures concentric rotation and torque transfer from the transmission to the vehicle’s final drive. The flange is housed within the rear section of the transmission, adjacent to the HOUSING REAR PART, and is secured by the CYLINDRICAL PIN for alignment integrity.
Symptoms of Failure
- Transmission output flange oil leak: Worn sealing surfaces on the 4657.354.039 cause fluid seepage around the output shaft, often visible as drips under the bell housing.
- Driveline vibration under load: A degraded flange face or spline wear leads to imbalance, producing a rhythmic shudder during acceleration or gear changes.
- Gear engagement clunking: Excessive play between the flange and the output shaft results in a metallic knock when shifting from Neutral to Drive or Reverse.
- Premature bearing noise: Misalignment from a warped flange accelerates wear on the HOUS.FRONT SECT bearings, generating a low-frequency hum at highway speeds.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.354.039 |
| Material | High-tensile steel, induction-hardened |
| Outer Diameter | 165 mm |
| Bolt Circle Diameter | 130 mm |
| Overall Length | 85 mm |
| Spline Count | 14-tooth involute |
| Weight | 2.4 kg |
| OEM Reference | ZF 4657.354.039 |
Compatibility
This flange is a direct-fit component for the ZF WG210 series transmission. It is also compatible with the closely related WG180, WG200, and WG211 models due to shared output shaft geometry. The part interfaces seamlessly with the TRANSMISSION HOUSING assembly and requires the use of a CYLINDRICAL PIN for precise radial alignment during installation. Always verify spline count and bolt pattern against your specific transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101042 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing for pump and clutch |
| 4657201013 | HOUSING REAR PART | Rear casing supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for flange positioning |
| 0636100801 | CAP SCREW | Fastener for flange-to-shaft retention |
| 4656301148 | FIXING PLATE | Locking plate for cap screw security |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh filter for sump protection |
| 0636100803 | CAP SCREW | Bolt for housing section fastening |
| 4656301048 | OIL FEED.HOUSG. | Lubrication supply channel casting |
