Overview
The ZF 4664.355.005 COVER PLATE is a precision-engineered sealing and protective component designed specifically for the WG 210 series transmission. This OEM genuine part sits on the exterior of the main transmission housing, forming a critical barrier that prevents contaminants from entering the internal gear train while retaining essential lubricants. The SKU 4664.355.005 interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, ensuring a secure seal against high-pressure oil leaks. As a factory-specification cover plate, it maintains the structural integrity of the WG210 assembly, making it indispensable for any rebuild or repair of this heavy-duty transmission series.
Symptoms of Failure
- External oil seepage around the cover plate perimeter: When the 4664.355.005 gasket surface degrades, transmission fluid may weep from the joint between the cover and the HOUSING REAR PART, leaving visible stains on the transmission casing.
- Gear engagement hesitation or slipping: A warped or cracked cover plate can reduce internal hydraulic pressure, leading to delayed clutch pack engagement and erratic shifting behavior under load.
- Increased operating noise from the transmission: Loss of seal integrity allows air ingress, causing cavitation in the oil pump and a distinct whining or grinding sound during gear changes.
- Contamination of transmission fluid with debris: A compromised cover plate permits dirt and metal particles to bypass the filter, accelerating wear on bearings and planetary gears.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4664.355.005 |
| Material | Die-cast aluminum alloy (A380 equivalent) |
| Dimensions (L x W x H) | 210 mm x 145 mm x 12 mm |
| Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4664.355.005 |
| Surface Finish | Anodized with precision-machined gasket face |
| Fastener Torque Spec | 25 Nm (18.4 ft-lbs) with CAP SCREW |
Compatibility
This cover plate is engineered for the ZF WG 210 series, but its mounting pattern and sealing profile also suit several related heavy-duty transmissions. Compatible models include the WG180, WG200, and WG210 variants used in off-highway trucks, wheel loaders, and industrial machinery. The 4664.355.005 is designed to mate with the CYLINDRICAL PIN alignment dowels and the FIXING PLATE bracket, ensuring correct positioning during installation. Always verify your transmission’s serial number against ZF’s parts catalog to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101075 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201151 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657201160 | HOUSING REAR PART | Rear section of transmission housing |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for cover plate positioning |
| 0636100801 | CAP SCREW | Fastener for cover plate attachment |
| 4656301148 | FIXING PLATE | Bracket securing cover plate assembly |
| 4657301032 | SCREEN SHEET | Filter screen for oil return circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for high-pressure side |
| 0636100803 | CAP SCREW | Fastener for housing sections |
| 0750301003 | OIL FEED.HOUSG. | Oil supply housing for lubrication circuit |
