Overview
The ZF 4657.298.003 is a critical OEM genuine component engineered specifically for the WG190 and WG210 series transmissions. This part functions as a precision-machined guide or spacer element within the valve body or clutch pack assembly, ensuring correct hydraulic fluid routing and component alignment during gear engagement. The SKU 4657.298.003 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in heavy-duty commercial vehicle transmissions. When installed alongside the TRANSMISSION HOUSING (4657101033), it maintains the structural integrity required for high-torque applications.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn 4657.298.003 can cause erratic clutch pack timing, leading to noticeable shift shock or hesitation when moving from neutral to drive.
- Internal transmission fluid leaks: Deterioration of this component often results in fluid bypassing seals, producing low pressure and visible oil seepage around the HOUS.FRONT SECT (4657201027) interface.
- Intermittent gear slipping under load: When this part loses dimensional stability, hydraulic circuits fail to hold pressure, causing the transmission to slip during uphill climbs or heavy hauling.
- Unusual whining or grinding noises: Misalignment from a degraded 4657.298.003 can create metal-on-metal contact, producing audible distress from the HOUSING REAR PART (4657201012) area.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4657.298.003 |
| Material | Hardened steel with anti-corrosion coating |
| Weight | 0.45 kg (1.0 lb) |
| Outer Diameter | 58 mm |
| Inner Diameter | 32 mm |
| Height | 22 mm |
| Related Fastener | CAP SCREW (0636100801) |
| Related Fastener | CAP SCREW (0636100803) |
| Retention Component | FIXING PLATE (4656301148) |
Compatibility
This genuine ZF part is designed for the WG190 and WG210 transmission series. It is also compatible with the WG180, WG200, and select WG150 variants that share the same hydraulic control architecture. The 4657.298.003 interfaces directly with the CYLINDRICAL PIN (0631306792) to ensure precise alignment during reassembly. Always verify your transmission model code before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4657201012 | HOUSING REAR PART | Rear section supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | M10 fastener for securing valve body |
| 4656301148 | FIXING PLATE | Retainer for clutch pack components |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for oil sump |
| 0636100803 | CAP SCREW | M8 fastener for housing cover |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil delivery manifold |
Frequently Asked Questions
Q: How do I know if the 4657.298.003 needs replacement?
A: If you experience persistent low hydraulic pressure codes (e.g., P0741) or visible scoring on the part during disassembly, replacement is required. Always inspect the CYLINDRICAL PIN (0631306792) for wear simultaneously.
Q: Can this part be reused if it appears clean?
A: No. ZF recommends replacing the 4657.298.003 whenever the transmission is overhauled, as microscopic wear can alter hydraulic clearances. Pair it with a new FIXING PLATE (4656301148) for optimal sealing.
Q: Is the 4657.298.003 compatible with aftermarket housings?
A: It is designed exclusively for OEM ZF housings. Using it with non-genuine TRANSMISSION HOUSING (4657101033) may cause misalignment and void warranty.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
