Overview
The ZF 2093.352.043 PISTON is a critical hydraulic actuation component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part converts hydraulic pressure into mechanical force to engage clutch packs and shift gears within the transmission valve body. Positioned inside the piston housing assembly, the 2093.352.043 PISTON ensures precise oil flow control and consistent clamping force during gear changes. When paired with a properly functioning DIFFERENTIAL HOUSING, this piston maintains the integrity of the hydraulic circuit, preventing cross-contamination between lubrication and actuation channels. The SKU 2093.352.043 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit without modification.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn 2093.352.043 PISTON causes sluggish shifts or abrupt clutch application, especially during cold starts or under heavy load.
- Internal hydraulic oil leaks: Cracks or scoring on the piston surface allow pressurized transmission fluid to bypass, leading to low line pressure and erratic shift timing.
- Transmission slipping in forward gears: When the piston fails to hold adequate pressure, the clutch packs slip under torque, resulting in RPM flare without corresponding vehicle acceleration.
- Contaminated transmission fluid: Debris from a deteriorating piston can circulate through the system, accelerating wear on the TAPER ROLLER BEARING and other precision components.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.352.043 |
| Material | Hardened alloy steel with anodized coating |
| Outer Diameter | 52.4 mm |
| Inner Diameter | 38.1 mm |
| Height | 28.7 mm |
| Weight | 0.34 kg |
| OEM Reference | ZF 2093.352.043 |
| Seal Type | Integrated PTFE lip seal |
Compatibility
This piston is specifically designed for ZF WG-series powershift transmissions. Verified compatible models include WG100, WG130, and WG131. It also fits select variants of the WG180 and WG200 series when used in conjunction with the correct DIFFERENTIAL assembly. Always cross-reference your transmission serial number with the 2093.352.043 PISTON to confirm fitment. For heavy-duty applications, pairing this piston with a DIFFERENTIAL from the same OEM batch ensures balanced hydraulic response across all clutch packs.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on shafts |
| 2093209023 | DIFFERENTIAL | Final drive torque splitting |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329088 | SPRING PIN | Secures piston alignment in bore |
| 5838300811 | THRUST WASHER | Reduces axial friction between rotating parts |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at right angles |
| 5838300633 | AXLE | Transmits rotational force to wheels |
| 5838300753 | THRUST WASHER | Controls end-play in planetary gear sets |
| 5838300818 | THRUST WASHER | Prevents metal-to-metal contact in clutch packs |
Frequently Asked Questions
Q: How do I know if the 2093.352.043 PISTON is the correct replacement for my transmission?
A: Check the stamped part number on your existing piston. If it matches 2093.352.043, it is a direct OEM replacement. For WG180 or WG200 transmissions, verify the piston bore diameter matches 52.4 mm before installation.
Q: Can I reuse the old seals when installing this piston?
A: No. Always replace all seals and gaskets in the piston bore. A worn seal will cause the same hydraulic leaks as a damaged piston. We recommend installing a new SPRING PIN during reassembly to ensure proper retention.
Q: What tools are needed to replace this piston?
A: You will need a piston ring compressor, torque wrench, and a seal driver kit. The piston must be installed without scoring the bore. If the bore shows wear, inspect the THRUST WASHER for damage that may have caused misalignment.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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