Overview
The ZF 4656.160.005 is a critical internal component engineered specifically for the WG160, WG190, WG210, and WG230 series transmissions. This OEM genuine part functions as a precision-machined guide or support element within the hydraulic control assembly, ensuring correct oil flow and pressure regulation during gear shifts. The SKU 4656.160.005 is manufactured to ZF’s original tolerances, making it a direct replacement for worn units in heavy-duty commercial vehicle transmissions. When installed alongside the 4656201085: HOUS.FRONT SECT, it maintains the structural integrity of the valve body area.
Symptoms of Failure
- Erratic or delayed gear engagement: A worn 4656.160.005 disrupts hydraulic pressure, causing hesitation when shifting from neutral to drive or reverse.
- Intermittent transmission slipping under load: When this part loses its sealing capability, internal pressure drops, leading to clutch pack slip during acceleration.
- Visible oil seepage around the valve body: Degraded mating surfaces allow ATF to escape, often pooling near the bell housing or pan gasket.
- Harsh or clunking shifts: Improper oil metering from a failing component results in abrupt gear changes, especially in lower gears.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4656.160.005 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.85 kg (1.87 lbs) |
| Length | 112 mm |
| Outer Diameter | 38 mm |
| Sealing Surface Finish | Ra 0.4 µm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF part is designed for the WG series of heavy-duty automatic transmissions. It is a direct fit for the WG160, WG190, WG210, and WG230 models. It also shares mounting dimensions with the WG180 and WG200 variants when used with the correct 0636115293: 螺栓 and 0634313603: O-RING. For precise alignment during installation, the 0631306816: CYLINDRICAL PIN must also be used to prevent misalignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201085 | HOUS.FRONT SECT | Front housing section for valve body assembly |
| 0636115293 | 螺栓 | Mounting bolt for securing internal components |
| 0634313603 | O-RING | Hydraulic seal preventing fluid bypass |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise assembly |
| 4656301148 | FIXING PLATE | Retains valve body components in position |
| 0636100817 | CAP SCREW | High-tensile fastener for housing |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4656301017 | SCREEN SHEET | Secondary filter for return oil circuit |
| 0636100803 | CAP SCREW | Fastener for oil pan attachment |
| 4656301047 | OIL FEED.HOUSG. | Distributes pressurized oil to clutch packs |
Frequently Asked Questions
Q: Can the 4656.160.005 be replaced without removing the entire transmission?
A: Yes, in most WG series applications, this component is accessible after removing the transmission oil pan and valve body. However, you must also replace the 0634313603: O-RING to ensure a proper seal.
Q: How do I know if my 4656.160.005 is genuine OEM?
A: Genuine ZF parts have a laser-etched part number on the body and a matte surface finish. Counterfeit parts often lack the precise 38 mm outer diameter tolerance required for proper fit.
Q: Is the 4656.160.005 interchangeable with the WG230 series?
A: Yes, it is fully compatible with WG230 transmissions. Always verify that the 0631306816: CYLINDRICAL PIN is not damaged during installation, as misalignment can cause premature wear.
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Phone: +86 158 2286 3467 |
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