Overview
This OEM genuine ZF 4657.183.174 component is a critical internal sealing and alignment element designed specifically for the WG 190 Series transmission. Positioned within the main gear train assembly, this part ensures precise hydraulic pressure distribution and prevents cross-contamination between lubrication circuits. The SKU 4657.183.174 interfaces directly with the main housing structure, working in concert with the 4657101082: TRANSMISSION HOUSING to maintain structural integrity under high torque loads. As a genuine ZF component, it guarantees factory-specified tolerances for long service intervals in heavy-duty commercial applications.
Symptoms of Failure
- Oil seepage at housing joints: When the 4657.183.174 seal surface degrades, operators often notice fluid weeping around the 4657201166: HOUS.FRONT SECT interface, leading to gradual transmission fluid loss.
- Erratic gear engagement under load: Worn sealing causes pressure drops, resulting in delayed or harsh shifting, particularly during uphill climbs or heavy towing.
- Metallic debris in oil pan: Internal wear particles from a failing 4657.183.174 can contaminate the fluid, often accompanied by a burnt odor during transmission operation.
- Vibration at specific RPM ranges: Misalignment due to part degradation creates harmonic vibrations, especially noticeable between 1800-2200 RPM in WG190 transmissions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4657.183.174 |
| Material | Hardened alloy steel with nitrile coating |
| Outer Diameter | 142.5 mm |
| Inner Diameter | 98.2 mm |
| Thickness | 18.7 mm |
| Weight | 0.94 kg |
| OEM Reference | ZF 4657.183.174 |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This genuine ZF part is engineered for the WG 190 Series transmission family, including models WG180, WG190, WG200, and WG210. It is also backward-compatible with select ZF 5HP and 6HP heavy-duty transmissions used in construction and agricultural machinery. The 4657.183.174 works in conjunction with the 4657201170: HOUSING REAR PART and the 4657298102: HOUSING REAR SECTION to form a complete sealing assembly. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201166 | HOUS.FRONT SECT | Forward housing section for input shaft |
| 4657201170 | HOUSING REAR PART | Rear housing segment for output support |
| 4657298102 | HOUSING REAR SECTION | End cap housing for PTO interface |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Retention bracket for seal carrier |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M12 fastener for rear housing |
Frequently Asked Questions
Q: Can the 4657.183.174 be replaced without removing the entire transmission?
A: Yes, in most WG190 applications, this part is accessible after removing the transmission oil pan and the 4657201166: HOUS.FRONT SECT. However, proper torque sequencing is critical to avoid warping the sealing surface.
Q: How often should this part be inspected during routine maintenance?
A: ZF recommends visual inspection every 500 operating hours or during any major transmission overhaul. Look for scoring or flat-spotting on the sealing face, which indicates imminent failure.
Q: Is the 4657.183.174 interchangeable with aftermarket alternatives?
A: While aftermarket copies exist, only the OEM genuine ZF part guarantees the exact Shore hardness and thermal expansion coefficient required for the WG190’s high-temperature operation. Non-OEM parts often lead to premature 4657298102: HOUSING REAR SECTION wear.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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