Overview
This OEM genuine ZF part, the 4657.354.030, is a critical internal component engineered specifically for the WG190 and WG210 series transmissions. It functions as a precision-machined guide or spacer element within the planetary gearset assembly, ensuring correct axial alignment and load distribution during torque transfer. The SKU 4657.354.030 is manufactured to ZF’s exacting tolerances, directly replacing worn units to restore factory-specified clearances. It is typically located between the HOUS.FRONT SECT and the HOUSING REAR PART, where it stabilizes the rotating assembly against vibration and thermal expansion.
Symptoms of Failure
When the 4657.354.030 wears beyond specification, operators will notice distinct performance degradation. Common failure indicators include:
- Intermittent gear slipping under load – The part loses its ability to maintain precise spacing, causing clutch packs to momentarily lose engagement during uphill hauls or heavy towing.
- Metallic grinding noise from the transmission housing – Worn surfaces allow metal-on-metal contact, producing a distinct scraping sound that intensifies with RPM changes.
- Increased transmission fluid temperature – Friction from misaligned components generates excess heat, often triggering warning lights on the dashboard.
- Delayed or harsh shifting between forward gears – The hydraulic control system compensates for mechanical slack, resulting in jarring engagement that stresses the TRANSMISSION HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.354.030 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Outer Diameter | 98.5 mm |
| Inner Diameter | 72.0 mm |
| Thickness | 12.7 mm |
| Weight | 0.34 kg |
| OEM Reference | ZF 4657.354.030 |
| Surface Hardness | 58–62 HRC |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This genuine ZF part is designed for the WG190 and WG210 transmission series. It is also compatible with the closely related WG180, WG200, and WG220 models that share the same planetary carrier architecture. The 4657.354.030 interfaces directly with the CYLINDRICAL PIN that secures the assembly, and it must be paired with the correct TRANSMISSION HOUSING to ensure proper oil flow. Always verify your transmission model code before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing that encloses all internal components |
| 4657201027 | HOUS.FRONT SECT | Front section housing the input shaft and pump drive |
| 4657201012 | HOUSING REAR PART | Rear section supporting the output flange and parking pawl |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for precise positioning of housing sections |
| 0636100801 | CAP SCREW | Fastener securing the valve body to the housing |
| 4656301148 | FIXING PLATE | Retainer plate for the oil pump assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for the lubrication circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for the main oil gallery |
| 0636100803 | CAP SCREW | High-tensile bolt for the clutch housing |
| 4681301040 | OIL FEED.HOUSG. | Oil distribution manifold for planetary lubrication |
Frequently Asked Questions
Q: Can the 4657.354.030 be installed without replacing the CYLINDRICAL PIN?
A: It is strongly recommended to replace the CYLINDRICAL PIN simultaneously, as wear on the pin can cause premature failure of the new spacer. Always inspect both components during rebuild.
Q: How do I confirm this part fits my WG190 transmission?
A: Check the transmission serial number plate. The WG190 and WG210 share the same planetary carrier dimensions, but the 4657.354.030 is not used in the WG180 without verifying the housing variant. Cross-reference with the TRANSMISSION HOUSING part number for absolute certainty.
Q: What is the typical service life of this component?
A> Under normal operating conditions with proper fluid maintenance, the 4657.354.030 lasts 300,000–500,000 km. Heavy-duty applications or contaminated fluid can reduce this significantly.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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