Overview
This OEM genuine ZF 4656.183.250 is a precision-engineered component designed specifically for the WG 160 Series transmission. It serves as a critical internal guide and sealing element within the gear train assembly, ensuring proper alignment and oil flow between rotating shafts. The SKU 4656.183.250 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 4656101056: TRANSMISSION HOUSING, it helps maintain structural integrity under high torque loads.
Symptoms of Failure
- Oil seepage at the rear seal interface: A worn 4656.183.250 often causes transmission fluid to leak past the output shaft seal, leaving puddles under the vehicle after extended operation.
- Audible gear whine during acceleration: When this part loses its dimensional stability, gear mesh clearance increases, producing a high-pitched whining noise that intensifies under load.
- Erratic shifting or delayed engagement: Internal wear can disrupt hydraulic pressure regulation, leading to harsh or delayed gear engagement, especially in cold weather.
- Metallic debris in transmission fluid: Fragments from a deteriorating 4656.183.250 will contaminate the oil, often visible during routine fluid changes as fine silver particles.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.183.250 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 1.2 kg (2.65 lbs) |
| Outer Diameter | 85 mm |
| Inner Diameter | 45 mm |
| Height | 32 mm |
| OEM Reference | ZF 4656.183.250 |
Compatibility
This genuine ZF part is primarily designed for the WG 160 Series transmission, but it also fits select models in the WG180 and WG200 families due to shared internal architecture. It is commonly used in municipal buses, refuse trucks, and medium-duty delivery vehicles. For proper installation, ensure the 4656201075: HOUS.FRONT SECT and 4656201077: HOUSING REAR PART are inspected for cracks or warpage during replacement. The 4656298049: HOUSING REAR SECTION must also be aligned correctly to prevent premature wear of the new component.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101056 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201077 | HOUSING REAR PART | Rear housing segment for output shaft |
| 4656298049 | HOUSING REAR SECTION | Secondary rear housing support |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 4656301148 | FIXING PLATE | Secures internal components in position |
| 0636100817 | CAP SCREW | Fastener for housing attachment |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4656301017 | SCREEN SHEET | Secondary oil filtration element |
| 0636100803 | CAP SCREW | Bolt for securing screen sheets |
Frequently Asked Questions
Q: Can I install the 4656.183.250 without replacing the housing gaskets?
A: It is strongly recommended to replace all sealing surfaces, including the gasket for the 4656101056: TRANSMISSION HOUSING, to prevent future oil leaks. Reusing old gaskets often leads to premature failure of the new part.
Q: How do I verify if my WG160 transmission needs this specific part?
A: Check for the part number stamped on the original component near the rear bearing journal. If you observe metallic debris in the oil pan, the 4656.183.250 is likely the source and should be inspected immediately.
Q: Is this part interchangeable with any aftermarket alternatives?
A: Only OEM genuine ZF 4656.183.250 parts guarantee the exact metallurgy and dimensional tolerances required for WG160 series transmissions. Aftermarket copies often fail under high thermal stress, leading to costly secondary damage.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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