Overview
The ZF 0730.104.992 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 rotating assemblies and stationary housings within the planetary gear set. Installed directly against the 4460115043 HOUSING, it maintains precise axial clearance and prevents metal-on-metal contact under high torque loads. The SKU 0730.104.992 is manufactured to ZF’s original tolerances, ensuring a factory-spec fit that aftermarket alternatives cannot replicate. This washer is often replaced during a full rebuild alongside the 4469315012 AXLE DRIVE HOUSING to guarantee concentric alignment of the output shaft.
Symptoms of Failure
- Transmission oil leaks at the housing interface: A worn 0730.104.992 washer allows the housing to shift, breaking the seal between the HOUSING and the axle drive unit, leading to visible fluid seepage.
- Gear slipping under load in WG200 models: When the washer thickness degrades, axial play increases, causing the clutch packs to lose clamping force and slip during acceleration.
- Metallic grinding noise during gear engagement: Excessive clearance from a collapsed washer allows the 0750117406 TAPER ROLLER BEARING to contact the housing wall, producing a distinct grinding sound.
- Vibration in the driveline at highway speeds: A deformed washer creates uneven preload on the 0750117802 TAPERED ROLLER BEARING, introducing rotational imbalance that resonates through the chassis.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.104.992 |
| Inner Diameter | 42.0 mm |
| Outer Diameter | 68.0 mm |
| Thickness | 2.5 mm |
| Material | Case-hardened steel (DIN 1.7131) |
| Surface Hardness | 58-62 HRC |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.104.992 |
| Related Seal | 0734319337 SHAFT SEAL |
Compatibility
This washer is a direct OEM replacement for the following ZF transmission models where it serves as the primary axial spacer in the planetary carrier assembly:
- ZF WG 200 Series (all variants including WG200, WG200C, WG200E)
- ZF WG 180 Series (WG180, WG180C) – shared planetary carrier design
- ZF WG 160 Series (WG160) – identical washer stack configuration
- ZF Ecomat 5HP (select 1990s models with WG-derived planetary sets)
Always verify the washer stack height using a micrometer before installation. For transmissions using the AXLE DRIVE HOUSING, this part must be paired with the correct TAPERED ROLLER BEARING to achieve proper preload.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Encloses planetary gear set; washer seats against this component |
| 4469315012 | AXLE DRIVE HOUSING | Transfers torque to output shaft; requires washer for alignment |
| 0750117406 | TAPER ROLLER BEARING | Supports radial and axial loads on input shaft |
| 0750117802 | TAPERED ROLLER BEARING | Handles thrust loads from planetary carrier |
| 0734319337 | SHAFT SEAL | Prevents oil leakage at the output shaft |
| 0730161317 | WASHER | Thinner shim for fine-tuning axial clearance |
| 0730161451 | WASHER | Alternate thickness washer for stack adjustment |
| 0730161452 | WASHER | 0.5mm shim for precision spacing |
| 0730161453 | WASHER | 1.0mm shim for coarse adjustment |
| 0730161340 | WASHER | Hardened steel spacer for output shaft |
