Overview
The ZF 0730.102.512 WASHER is a precision-engineered OEM genuine component designed specifically for the WG 200 series transmission. This hardened steel washer functions as a critical load-spreading interface between fasteners and transmission housing surfaces, ensuring proper clamp load distribution during assembly. Located within the planetary gearset or clutch pack retention system, the SKU 0730.102.512 prevents galling and maintains axial clearance under high-torque conditions. When installed alongside the 4460165051 CONSOLE and 4460368311 CONSOLE, this washer ensures the 0636011429 HEXAGON SCREW achieves correct torque retention without distorting adjacent components.
Symptoms of Failure
- Transmission oil seepage at bolt interfaces: A worn 0730.102.512 washer loses its sealing compression, allowing ATF to migrate past the 0730100365 WASHER mating surface, often mistaken for gasket failure.
- Audible metallic rattling during gear engagement: When the washer thickness degrades beyond tolerance, axial play develops in the clutch pack, causing intermittent gear slippage under load.
- Inconsistent shift quality in WG200 series: Reduced washer height alters the preload on the planetary carrier, leading to delayed or harsh upshifts that worsen with transmission temperature rise.
- Visible fretting corrosion on housing surfaces: A failed washer allows micro-movement between the 0636011429 HEXAGON SCREW head and the transmission casing, leaving telltale orange-brown residue during inspection.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.102.512 |
| Material | Case-hardened carbon steel (DIN 1.0402 equivalent) |
| Outer Diameter | 28.0 mm ±0.2 mm |
| Inner Diameter | 14.2 mm ±0.1 mm |
| Thickness | 2.5 mm ±0.05 mm |
| Surface Hardness | HRC 45-50 |
| Weight | 8.4 grams |
| OEM Reference | ZF 0730.102.512 |
| Finish | Zinc-phosphate coated (anti-corrosion) |
Compatibility
This OEM genuine washer is engineered for the ZF WG 200 series transmissions, including models WG180, WG200, and WG210. It is also compatible with select ZF-Ecomat 4HP and 5HP variants that share the same planetary carrier bolt pattern. The 0730.102.512 is frequently used in conjunction with the 4644105418 DISCONNECTION assembly and 4644305041 ADAPTER for complete rebuilds. For WG200 applications requiring axle drive integration, pair this washer with the 4460068159 AXLE DRIVE and 4460168651 INPUT FLANGE to ensure proper torque retention.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460165051 | CONSOLE | Housing support bracket for transmission mount |
| 4460368311 | CONSOLE | Secondary support bracket for WG200 series |
| 0636011429 | HEXAGON SCREW | M14x1.5 bolt for washer retention |
| 0730100365 | WASHER | Sealing washer for oil gallery ports |
| 4644105418 | DISCONNECTION | Clutch pack disconnection mechanism |
| 4644305041 | ADAPTER | Torque converter-to-input shaft adapter |
| 4460068159 | AXLE DRIVE | Output shaft drive gear assembly |
| 4460168651 | INPUT FLANGE | Flange for driveshaft connection |
| 4460368318 | FLANGE | Output flange for PTO interface |
| 4460368317 | DUST PROTECTION | Dust seal cover for input shaft |
