Overview
The ZF 4660.306.102 DUCT PLATE is a precision-engineered component designed for the WG200 and WG92 transmission series. This OEM genuine part, identified by SKU 4660.306.102, serves as a critical fluid routing interface within the transmission assembly. It directs pressurized oil and coolant flow between the TRANSMISSION HOUSING and the HOUSING, ensuring proper lubrication and thermal regulation for planetary gear sets. Without this duct plate, hydraulic circuits would fail to maintain correct pressure gradients, leading to operational instability.
Symptoms of Failure
- Transmission oil leaks at the housing interface: A warped or cracked duct plate allows pressurized fluid to escape, leaving visible puddles under the vehicle and causing low fluid levels.
- Erratic gear engagement or slipping: When the duct plate fails to channel oil correctly, clutch packs receive inconsistent hydraulic pressure, resulting in delayed shifts or complete loss of drive.
- Overheating during sustained operation: Restricted oil flow from a damaged duct plate reduces cooling capacity, triggering thermal warnings or transmission shutdown.
- Contaminated fluid from debris ingress: A fractured plate can allow metallic particles to enter the oil gallery, accelerating wear on the RANGE SELECTOR and valve body.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4660.306.102 |
| Material | High-strength aluminum alloy with corrosion-resistant coating |
| Dimensions | 210 mm x 85 mm x 12 mm (estimated) |
| Weight | 0.45 kg (1.0 lb) |
| OEM Reference | ZF 4660.306.102 |
| Sealing Surface | Precision-machined flatness tolerance ±0.05 mm |
| Operating Temperature | -40°C to +150°C |
Compatibility
This duct plate is engineered for ZF WG series transmissions, specifically the WG200 and WG92 models. It also fits select variants of the WG180 and WG150 series where the oil routing architecture matches. Always verify the casting number on your existing PERIPHERALS assembly before installation. The plate interfaces directly with the SUCTION TUBE and requires a new O-RING for proper sealing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660198001 | PERIPHERALS | Manages auxiliary hydraulic circuits |
| 0501209818 | RANGE SELECTOR | Controls gear range engagement |
| 4660101011 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4660301018 | HOUSING | Encloses clutch and valve assemblies |
| 0631306174 | CYLINDRICAL PIN | Aligns components during assembly |
| 0769123894 | TYPE PLATE | Identifies transmission model and specs |
| 4660221012 | SUCTION TUBE | Draws oil from the sump to the pump |
| 0634100317 | O-RING | Seals fluid connections |
| 0636103273 | CAP SCREW | Secures duct plate to housing |
| 0750100022 | SCREW PLUG | Closes unused oil ports |
