Overview
The ZF 0730.103.246 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 and preventing galling or deformation under high-torque conditions. Located within the clutch pack or valve body assembly, the SKU 0730.103.246 maintains axial clearance tolerances essential for smooth gear engagement. When paired with the 4143101009 HOUSING and 4143301025 HOUSING, this washer forms a sealed, vibration-resistant joint that withstands continuous hydraulic pressure cycles.
Symptoms of Failure
- Hydraulic fluid seepage at housing joints: A worn or crushed 0730.103.246 washer reduces clamping force, allowing transmission oil to weep past mating surfaces—often mistaken for a gasket failure.
- Intermittent gear slipping under load: When the washer loses its original thickness, axial play increases, causing clutch pack clearance to drift and resulting in delayed or incomplete gear engagement during uphill or heavy-load operation.
- Abnormal metallic rattling from transmission sump: A fractured or deformed washer can break into fragments, circulating debris that damages the 0634313603 O-RING and adjacent valve body components.
- Torque converter shudder on cold starts: Insufficient washer height alters the stack-up tolerance, leading to inconsistent converter clutch application and low-frequency vibration during initial warm-up cycles.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.103.246 |
| Inner Diameter | 18.0 mm |
| Outer Diameter | 30.0 mm |
| Thickness | 2.5 mm |
| Material | Case-hardened carbon steel (DIN 1.0401) |
| Surface Finish | Zinc-phosphate coated, oiled |
| Hardness | HRC 45–50 |
| Weight | 12 grams |
| OEM Reference | ZF 0730.103.246 |
| Compatible Fastener | 0636101068 CAP SCREW |
Compatibility
This washer is engineered for the ZF WG 200 Series, including models WG180, WG200, and WG210. It is also used in select ZF Ecomat 4HP and 5HP transmissions where identical housing bolt patterns exist. The 0730.103.246 directly interfaces with the 4475280018 SCREW PLUG and 0501342341 SUPPORT RING in the main control bore assembly. For full seal replacement, order the 4143298457 SEAL KIT which includes this washer along with 0634313591 O-RING and 0634304484 O-RING.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Main transmission casing section |
| 4143301025 | HOUSING | Rear housing adapter plate |
| 0634313603 | O-RING | Static seal for housing bore |
| 4475280018 | SCREW PLUG | Oil gallery sealing plug |
| 0501342341 | SUPPORT RING | Backup ring for O-ring extrusion |
| 4143298457 | SEAL KIT | Complete overhaul gasket set |
| 0634313591 | O-RING | Valve body cover seal |
| 0636101068 | CAP SCREW | M10 flange bolt for housing |
| 4143221013 | THROTTLE VALVE | Hydraulic pressure modulation spool |
| 0634304484 | O-RING | Throttle valve bore seal |
