Overview
The ZF 0730.109.734 THRUST WASHER is a precision-engineered component designed to manage axial loads and maintain critical clearances within the planetary gear sets of ZF WG92 and WG98 series transmissions. Positioned between rotating shafts and stationary housings, this OEM genuine part prevents metal-to-metal contact that would otherwise lead to premature gear wear and heat buildup. The SKU 0730.109.734 is manufactured to exacting ZF tolerances, ensuring consistent oil film distribution across the thrust face. When installed alongside a properly sealed 4660101012: TRANSMISSION HOUSING and the 4660301020: HOUSING, this washer forms a durable barrier that protects the transmission’s internal architecture from axial displacement.
Symptoms of Failure
- Gradual gear slipping under load – A worn thrust washer reduces clamping force on clutch packs, causing intermittent power loss during acceleration or hill climbs.
- Low oil pressure warnings – Excessive end-play from a degraded washer allows pressurized fluid to bypass seals, triggering dash alerts and erratic shift timing.
- Metallic debris in the oil pan – Flaking or scoring of the washer surface sheds fine bronze or steel particles into the sump, often visible during routine fluid changes.
- Audible whining or knocking from the bell housing – As the washer thins, gear train components collide, producing a distinct rhythmic noise that intensifies with engine RPM.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0730.109.734 |
| Material | Phosphor bronze with PTFE overlay |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 52.0 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.109.734 |
Compatibility
This thrust washer is a direct fit for ZF WG92 and WG98 series transmissions, including models such as the WG180, WG200, WG210, and WG220. It is also used in certain WG150 variants where planetary gear end-play must be controlled. Always verify the part number against your transmission’s serial plate; the 0769123894: TYPE PLATE provides the definitive model code. For installations requiring precise alignment, the 0631306174: CYLINDRICAL PIN ensures the washer remains correctly oriented during assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101012 | TRANSMISSION HOUSING | Encloses gear sets and supports bearing bores |
| 4660301020 | HOUSING | Provides structural mount for valve body and shafts |
| 0631306174 | CYLINDRICAL PIN | Aligns thrust washer and prevents rotation |
| 0769123894 | TYPE PLATE | Identifies transmission model and serial number |
| 4660221012 | SUCTION TUBE | Draws oil from pan to pump inlet |
| 0634100317 | O-RING | Seals housing joints against fluid leaks |
| 0636103273 | CAP SCREW | Secures housing halves with precise torque |
| 0750100022 | SCREW PLUG | Closes oil passages during service |
| 4660101804 | TRANSMISSION HOUSING | Alternate housing variant for WG98 models |
| 4660301008 | HOUSING | Lightweight housing for specific torque converters |

