Overview
The ZF 4656.185.068 ACCESSORIES for WG171 is a precision-engineered OEM genuine part designed to support the internal lubrication and sealing architecture of the WG 171 Series transmission. This accessory component plays a critical role in maintaining proper fluid flow and pressure regulation within the gear train assembly. As a factory-specified replacement, the SKU 4656.185.068 ensures exact fitment and long-term durability when paired with other housing and sealing elements. It sits directly adjacent to the main valve body and oil distribution channels, making it essential for consistent hydraulic performance.
Symptoms of Failure
- Intermittent gear slipping under load: When the 4656.185.068 accessory wears, hydraulic pressure drops can cause unexpected gear disengagement during heavy hauling.
- Visible oil seepage around the transmission housing: Deterioration of this part often leads to slow leaks near the bell housing or side cover, leaving oily residue on the chassis.
- Delayed engagement when shifting from Park to Drive: A worn accessory can restrict fluid passage, resulting in a 2-3 second lag before the transmission engages.
- Whining or humming noise during acceleration: Reduced lubrication flow due to a failing 4656.185.068 creates audible bearing stress in the WG171 series.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4656.185.068 |
| Material | High-grade steel with corrosion-resistant coating |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 85 mm x 45 mm x 30 mm |
| Surface Finish | Phosphate-treated for wear resistance |
| OEM Reference | ZF WG171 Series |
Compatibility
This accessory is engineered for the ZF WG 171 transmission series and is also compatible with select models in the WG180 and WG200 families that share the same hydraulic circuit architecture. It directly interfaces with the 4656101028: TRANSMISSION HOUSING and the 4656301066: HOUS.FRONT SECT. For complete assembly, it should be installed alongside the 4656201015: SCREEN SHEET and the 4656301037: TUBE to ensure proper fluid routing and filtration. Always verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Encloses and protects internal gear sets |
| 4656301066 | HOUS.FRONT SECT | Front section of the transmission casing |
| 4656201015 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4656301037 | TUBE | Routes oil between valve body and cooler |
| 0634313514 | O-RING | Seals fluid connections to prevent leaks |
| 0636100803 | CAP SCREW | Secures housing sections together |
| 4656301042 | HOUSING REAR PART | Rear casing component for torque converter |
| 0631306816 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0636100801 | CAP SCREW | Fastens valve body to transmission case |
| 0636100160 | CAP SCREW | Mounts accessory bracket to housing |
Frequently Asked Questions
Q: Can the 4656.185.068 be used in a ZF WG200 transmission?
A: Yes, this accessory is compatible with WG200 models that share the same hydraulic circuit design as the WG171. However, always cross-reference your transmission serial number to confirm fitment.
Q: What tools are required to replace this accessory?
A: Standard socket set, torque wrench, and sealant are typically needed. The part is accessed after removing the transmission oil pan and the 4656301066: HOUS.FRONT SECT.
Q: How often should the 4656.185.068 be inspected?
A: During every major transmission service (every 100,000 miles or 3 years), inspect this accessory for cracks or deformation. Replace immediately if any oil seepage is detected around the 4656101028: TRANSMISSION HOUSING.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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