Overview
The ZF 4657.103.454 is a precision-engineered OEM genuine component specifically designed for the WG 190 Series transmission. This part functions as a critical internal guide and sealing element within the hydraulic control system, ensuring proper fluid routing and pressure regulation during gear shifts. The SKU 4657.103.454 is located in the valve body assembly, where it interacts directly with the main control pistons and spring packs. As an OEM genuine part, it guarantees exact fitment and material composition that matches the original factory specifications, eliminating the risk of premature wear or misalignment common with aftermarket alternatives.
Symptoms of Failure
- Delayed or harsh engagement when shifting from Neutral to Drive: A worn 4657.103.454 can cause sluggish hydraulic response, leading to a noticeable lag before the transmission engages.
- Intermittent gear slipping under moderate load: As the part loses its sealing integrity, internal pressure drops, resulting in clutch pack slippage during acceleration or hill climbing.
- Visible oil seepage around the valve body cover: Deterioration of this component often manifests as small fluid leaks that accumulate on the transmission pan or bell housing.
- Erratic shift patterns with occasional neutral drops: When the part fails completely, the transmission may momentarily lose drive, requiring the operator to release and reapply throttle to restore power.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.103.454 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.42 kg (0.93 lbs) |
| Length | 68 mm |
| Width | 32 mm |
| Height | 18 mm |
| OEM Reference | ZF 4657.103.454 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF part is primarily engineered for the WG 190 Series transmission, but it also shares compatibility with several other ZF heavy-duty models. It is directly interchangeable with components used in the WG 180, WG 200, and WG 210 series transmissions. Additionally, the 4657.103.454 has been verified for use in certain Ecomat 4HP and 6HP variants that utilize the same valve body architecture. Always cross-reference your transmission serial number with the OEM parts catalog to confirm fitment.
During installation, this part is frequently replaced alongside the 4657101088: TRANSMISSION HOUSING to ensure proper alignment of the internal hydraulic passages. The 4657201183: HOUS.FRONT SECT and 4657201184: HOUSING REAR PART must also be inspected for wear when servicing this component, as they form the structural cavity where the 4657.103.454 operates. For complete rebuilds, the 4657298111: HOUSING REAR SECTION is often replaced simultaneously to restore full sealing integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Main structural casing that encloses all gear and valve body assemblies |
| 4657201183 | HOUS.FRONT SECT | Front section of the housing that supports input shaft bearings |
| 4657201184 | HOUSING REAR PART | Rear housing section that contains output shaft and parking pawl |
| 4657298111 | HOUSING REAR SECTION | Secondary rear housing component for additional structural support |
| 0631306816 | CYLINDRICAL PIN | Precision alignment pin for housing and valve body positioning |
| 0636100801 | CAP SCREW | M10 fastener for securing housing sections together |
| 4681301015 | FIXING PLATE | Retention plate for securing internal valve body components |
| 4681301016 | SCREEN SHEET | Fine mesh filter sheet for hydraulic fluid contamination control |
| 4681301017 | SCREEN SHEET | Secondary filter screen for high-pressure circuit protection |
| 0636100803 | CAP SCREW | M8 fastener for valve body cover attachment |
Frequently Asked Questions
Q: Can I install the 4657.103.454 without replacing the transmission housing?
A: Yes, in most cases this part can be replaced independently. However, if the 4657101088: TRANSMISSION HOUSING shows signs of scoring or corrosion, we recommend replacing both simultaneously to ensure proper sealing.
Q: How do I verify if the 4657.103.454 is the correct part for my WG190 transmission?
A: Check the stamped serial number on the transmission data plate. The WG190 series typically has a 6-digit model code followed by a 3-digit variant. Cross-reference this with the OEM parts catalog to confirm the 4657.103.454 is listed for your specific variant.
Q: What torque specification should I use for the cap screws when reinstalling this component?
A: For the 0636100801: CAP SCREW, use 25 Nm (18.4 lb-ft). For the 0636100803: CAP SCREW, use 18 Nm (13.3 lb-ft). Always apply thread locker to prevent loosening from vibration.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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