Overview
The ZF 4657.355.001 CENTERING DISC is a precision-engineered OEM genuine component designed to maintain axial alignment within the clutch and damper assembly of ZF WG-series transmissions. This disc ensures the input shaft and rotating clutch packs remain perfectly centered during high-torque operation, reducing vibration and preventing uneven wear on adjacent components. As part number 4657.355.001, it is a critical wear item that directly supports the structural integrity of the gear train. The centering disc sits between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, where it acts as a locating guide for the main shaft.
Symptoms of Failure
- Transmission gear slipping under load — A worn centering disc allows the clutch pack to shift off-axis, causing intermittent power loss and gear disengagement during acceleration.
- Oil leaks near the front housing joint — When the disc loses its concentricity, it can distort the seal surface between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, leading to ATF seepage.
- Abnormal vibration or shuddering in drive — Misalignment caused by a degraded centering disc transmits harmonic vibrations through the driveline, especially noticeable at highway speeds.
- Clogged or damaged screen sheet — Debris from a failing disc can travel through the oil circuit and obstruct the SCREEN SHEET, restricting lubrication flow to the valve body.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.355.001 |
| Material | Case-hardened steel with anti-corrosion coating |
| Outer Diameter | 165 mm (estimated) |
| Inner Diameter | 85 mm (estimated) |
| Thickness | 8.5 mm (estimated) |
| Weight | 0.42 kg (estimated) |
| OEM Reference | ZF 4657.355.001 (Genuine) |
| Associated O-Ring | 0634313514: O-RING |
| Mounting Fastener | 0636100803: CAP SCREW |
Compatibility
This centering disc is engineered for ZF WG-series transmissions, specifically the WG171, WG190, WG191, WG210, and WG211 models. It also fits the BP 210 Series and is commonly used in WG180 and WG200 variants where the clutch housing assembly shares the same centering geometry. Always verify the disc’s fitment against the TUBE and the HOUSING REAR PART to ensure proper alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101030 | TRANSMISSION HOUSING | Main structural casing that encloses the gear train |
| 4656301066 | HOUS.FRONT SECT | Front section housing the input shaft and centering disc |
| 4656201015 | SCREEN SHEET | Fine mesh filter protecting the hydraulic control system |
| 4656301037 | TUBE | Oil delivery tube connecting the pump to the valve body |
| 0634313514 | O-RING | Seals the centering disc to prevent fluid bypass |
| 0636100803 | CAP SCREW | Secures the centering disc to the front housing |
| 4656301064 | HOUSING REAR PART | Rear housing section that supports the output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing assembly |
| 0636100801 | CAP SCREW | Fastener for the rear housing attachment |
| 0636100160 | CAP SCREW | Bolt for securing the screen sheet assembly |
Frequently Asked Questions
Q: Can I reuse the centering disc if it shows only minor wear?
A: No. The ZF 4657.355.001 disc is a precision alignment component. Even minor edge wear can cause cumulative misalignment, leading to premature failure of the HOUS.FRONT SECT and clutch assembly. Always replace it during a rebuild.
Q: Does this part come with the O-ring or cap screws?
A: The centering disc is sold as a standalone OEM part. We recommend ordering the 0634313514: O-RING and 0636100803: CAP SCREW separately to ensure a complete, leak-free installation.
Q: How do I confirm this disc fits my WG191 transmission?
A: Verify your transmission’s serial number and housing casting. The 4657.355.001 is standard for WG171 through WG211 models, but always cross-reference the TRANSMISSION HOUSING part number to confirm compatibility.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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