Overview
The ZF 4646.302.112 PROTECTIVE SHEET is a critical OEM genuine component engineered specifically for the WG210 series transmission. This precision-formed shield sits between the transmission housing and the clutch assembly, serving as a barrier against debris, heat, and mechanical wear. Its primary function is to safeguard internal seals and rotating elements from contamination while maintaining optimal oil flow within the gearbox. The SKU 4646.302.112 is manufactured to ZF’s exacting tolerances, ensuring a perfect fit and long service life. When installed correctly, this protective sheet prevents premature degradation of adjacent components, such as the 4657101042: TRANSMISSION HOUSING, by reducing friction and thermal stress.
Symptoms of Failure
When the ZF 4646.302.112 protective sheet wears out or becomes damaged, operators may notice several distinct failure indicators. First, oil seepage around the bell housing often occurs as the sheet loses its sealing integrity, allowing transmission fluid to escape. Second, intermittent gear engagement hesitation can develop when debris bypasses the worn sheet and interferes with the clutch pack. Third, unusual metallic rattling from the transmission casing may signal that the sheet has cracked or shifted, allowing metal-on-metal contact. Finally, overheating during low-speed operation is common when the protective sheet fails to deflect heat away from the 4657201028: HOUS.FRONT SECT, leading to accelerated fluid degradation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4646.302.112 |
| Material | High-tensile steel with anti-corrosion coating |
| Length | 185 mm |
| Width | 95 mm |
| Thickness | 2.5 mm |
| Weight | 0.34 kg |
| OEM Reference | ZF 4646.302.112 |
| Fastener Type | M8 cap screws (use 0636100801: CAP SCREW) |
Compatibility
This protective sheet is primarily designed for the ZF WG210 series, but it also fits select models in the WG180, WG200, and WG220 families due to shared housing dimensions. It is a direct replacement for the original equipment installed on WG210 transmissions from 2012 onward. For proper installation, ensure the 4657201013: HOUSING REAR PART is clean and free of burrs. The sheet is secured using a 0631306792: CYLINDRICAL PIN for alignment, which must be replaced if worn. Always verify compatibility with your specific transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101042 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201028 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201013 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for protective sheet installation |
| 0636100801 | CAP SCREW | Fastener for securing the protective sheet |
| 4656301148 | FIXING PLATE | Retaining plate for clutch pack |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Secondary oil filter screen |
| 0636100803 | CAP SCREW | Alternate fastener for housing sections |
| 4656301048 | OIL FEED.HOUSG. | Oil supply channel housing |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
