Overview
The ZF 2099.364.012 THRUST WASHER is a precision-engineered OEM genuine component designed to manage axial loads and maintain critical clearances within heavy-duty ZF transmissions. Positioned between rotating gear sets and stationary housings, this thrust washer prevents metal-to-metal contact, ensuring smooth power flow and reducing frictional heat buildup. As a wear-item part, the SKU 2099.364.012 is essential for preserving the integrity of the differential assembly, particularly when paired with the 2099109002 DIFFERENTIAL and the 2099364014 CROWN WHEEL. In construction machinery applications, this washer directly supports the 2099209001 DIFFERENTIAL assembly, preventing premature failure of the 2098309010 DIFFERENTIAL HOUSING.
Symptoms of Failure
When the ZF 2099.364.012 THRUST WASHER wears beyond tolerance, operators will notice distinct performance issues. Look for these specific failure symptoms:
- Axial end-play and gear clatter: Excessive clearance causes the differential gears to shift, producing a distinct knocking sound during load changes.
- Metallic debris in transmission oil: Worn washer material contaminates the lubricant, often visible as fine silver particles during oil changes.
- Intermittent gear slipping under heavy load: As the washer thins, the 2098309032 DIFFERENTIAL BEVEL GEAR loses proper mesh alignment, leading to momentary power loss.
- Overheating in the differential housing: Increased friction from a collapsed washer generates excess heat, which may be detected by infrared thermography near the housing.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2099.364.012 |
| Material | Hardened steel with phosphate coating |
| Outer Diameter | 64.0 mm |
| Inner Diameter | 38.5 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 2099.364.012 |
| Hardness | HRC 58-62 |
Compatibility
This thrust washer is engineered for ZF power shift transmissions commonly found in construction machinery. It is a direct fit for the following ZF transmission models:
- ZF WG180 series (all variants)
- ZF WG200 series (including WG200-5 and WG200-6)
- ZF WG120 series (limited applications)
- ZF 4WG-200 and 4WG-210 torque converter transmissions
Always verify the part number against your transmission’s service manual. This washer is commonly replaced alongside the 2098309009 DIFFERENTIAL HOUSING and the 2098309031 AXLE BEVEL GEAR during a full differential rebuild.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2099109002 | DIFFERENTIAL | Distributes torque between axle shafts |
| 2099364014 | CROWN WHEEL | Transfers power from pinion to differential |
| 2099209001 | DIFFERENTIAL | Complete differential assembly for WG series |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 2098309009 | DIFFERENTIAL HOUSING | Alternative housing variant for WG180 |
| 2098309031 | AXLE BEVEL GEAR | Drives axle shafts from differential |
| 2098309030 | AXLE BEVEL GEAR | Matching bevel gear for opposite side |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Planetary gear within differential case |
| 12883200682 | THRUST WASHER | Alternate thrust washer for specific models |
| 0635332059 | BALL BEARING | Supports rotating shafts in differential |
