Overview
This OEM genuine ZF 4656.183.307 is a precision-engineered component designed specifically for the WG 160 Series transmission. It functions as a critical internal guide and sealing element within the hydraulic control circuit, ensuring consistent oil pressure distribution during gear shifts. The SKU 4656.183.307 is manufactured to ZF’s original tolerances, guaranteeing a direct fit and long service life. Located within the valve body assembly, this part works in concert with the 4656101056: TRANSMISSION HOUSING and the 4656201075: HOUS.FRONT SECT to maintain proper hydraulic flow. When this part degrades, it directly impacts shift quality and overall transmission reliability.
Symptoms of Failure
- Erratic shift timing and gear hunting: A worn 4656.183.307 disrupts hydraulic pressure signals, causing the transmission to hesitate or shift at incorrect RPMs.
- Internal transmission oil leaks: Degraded sealing surfaces allow ATF to bypass the intended circuit, leading to low line pressure and visible drips from the bell housing area.
- Delayed engagement from Park to Drive or Reverse: As the part loses its dimensional integrity, the transmission takes longer to build initial pressure, resulting in a noticeable lag.
- Harsh or flared shifts under load: Inconsistent hydraulic regulation causes clutches to engage too quickly (harsh) or slip (flare) during acceleration.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4656.183.307 |
| 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 4656.183.307 |
| Thread Size | M8 x 1.25 (mounting) |
Compatibility
This genuine ZF part is primarily engineered for the WG 160 Series transmission. It is also compatible with the following ZF models that share the same valve body architecture: WG 180, WG 200, and WG 150. Always verify the part number against your transmission’s serial plate. For complete assembly integrity, ensure the 4656201077: HOUSING REAR PART and the 4656298049: HOUSING REAR SECTION are inspected during replacement.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101056 | TRANSMISSION HOUSING | Main structural casing for gear and shaft assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for torque converter interface |
| 4656201077 | HOUSING REAR PART | Rear cover housing for output shaft support |
| 4656298049 | HOUSING REAR SECTION | Extended rear section for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 4656301148 | FIXING PLATE | Retention plate for valve body components |
| 0636100817 | CAP SCREW | M10 fastener for housing attachment |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M8 fastener for valve body cover |
Frequently Asked Questions
Q: Can I install the 4656.183.307 without replacing the housing gaskets?
A: It is strongly recommended to replace all sealing elements, including the gaskets for the TRANSMISSION HOUSING, when installing this part. Old gaskets may cause cross-leaks that mimic a failed component.
Q: How do I confirm this part fits my WG 160 transmission?
A: Verify the 10-digit serial number on your transmission’s data plate. The 4656.183.307 is a direct replacement for all WG 160 variants built after 2010. If your unit uses a different valve body revision, inspect the HOUS.FRONT SECT for matching bolt patterns.
Q: What is the typical lifespan of this OEM part?
A> Under normal operating conditions with regular fluid changes, the 4656.183.307 lasts approximately 300,000 to 400,000 miles. Premature failure is often linked to contaminated ATF or worn SCREEN SHEET filters.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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