Overview
The ZF 4651.183.016 is a critical OEM genuine component engineered specifically for the WG 110 series transmission. This part functions as a precision-machined hydraulic control element, regulating fluid pressure and flow within the valve body assembly to ensure smooth gear engagement and consistent torque delivery. Positioned directly within the main control circuit, the 4651.183.016 works in concert with the TRANSMISSION HOUSING (4651101013) to maintain structural integrity under high thermal loads. As an OEM genuine part, it guarantees exact fitment and factory-specified tolerances, eliminating the risk of premature wear associated with aftermarket alternatives.
Symptoms of Failure
- Erratic shifting or gear slipping under load: When the 4651.183.016 wears, hydraulic pressure drops, causing delayed or harsh shifts—especially in WG110 transmissions operating at heavy loads.
- Visible oil leaks around the valve body area: Degraded sealing surfaces allow transmission fluid to escape, often pooling near the HOUSING (4651301032) interface.
- Intermittent loss of drive in forward gears: Internal spool valve sticking leads to temporary power interruption, a classic sign of a failing control element.
- Increased operating temperature due to fluid starvation: A worn 4651.183.016 restricts fluid circulation, causing the transmission to overheat during extended operation.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4651.183.016 |
| OEM Reference | ZF WG110 Series |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 45 mm x 35 mm |
| Sealing Type | Integrated O-ring groove (compatible with O-RING 0634303928) |
| Operating Pressure Range | 8–22 bar |
Compatibility
This OEM genuine part is designed for the ZF WG 110 series transmission, commonly found in medium-duty trucks, buses, and off-highway equipment. It is also compatible with the WG 180 and WG 200 series when used in conjunction with the HOUSING (4651301033) adapter kit. The 4651.183.016 fits all WG110 variants manufactured after 2005, including models with integrated retarder systems. For WG120 or WG150 applications, verify clearance with the main valve body before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101013 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4651301032 | HOUSING | Secondary housing for valve body support |
| 0634303928 | O-RING | Seals fluid passages between components |
| 4651301033 | HOUSING | Adapter housing for WG180/WG200 compatibility |
| 4651203002 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4651303005 | SCREEN SHEET | Secondary filtration for high-pressure circuit |
| 0636101032 | CAP SCREW | Fastens housing sections with precise torque |
| 0630361028 | SEALING CAP | Protects unused ports from contamination |
| 4475280060 | SCREW PLUG | Seals threaded access points |
| 0634303312 | O-RING | Provides secondary sealing for high-pressure joints |
Frequently Asked Questions
Q: Can the 4651.183.016 be installed without replacing the O-rings?
A: No. ZF recommends always replacing the O-RING (0634303928) and O-RING (0634303312) during any valve body service to prevent fluid bypass.
Q: What is the typical service life of this part in a WG110 transmission?
A: Under normal operating conditions (non-continuous heavy hauling), the 4651.183.016 lasts approximately 250,000–300,000 miles before showing signs of hydraulic wear.
Q: Does this part require special tools for installation?
A> Yes. A calibrated torque wrench and a seal installation tool are required to avoid damaging the precision bore. Always consult the ZF service manual for your specific WG110 variant.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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