Overview
The ZF 2093.352.037 PISTON is a critical hydraulic actuation component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the primary force-transmitting element within the clutch pack or shift cylinder assembly, converting hydraulic pressure into linear mechanical motion to engage or disengage gear sets. The SKU 2093.352.037 sits directly inside the transmission valve body or clutch housing, where it seals against high-pressure oil circuits to ensure precise gear engagement. When operating correctly, this piston maintains consistent clamping force on friction plates, enabling smooth power flow through the drivetrain. For optimal assembly integrity, this piston is frequently installed alongside the 2094104412: MAIN SHAFT and the 2094304054: MAIN SHAFT, which together form the core rotating and actuating assembly.
Symptoms of Failure
When the ZF 2093.352.037 piston wears out, operators typically encounter delayed or harsh gear engagement during shifting, as the piston can no longer build adequate hydraulic pressure. A second common failure symptom is internal transmission oil leaks—visible as fluid accumulation around the bell housing or a drop in sump level without external drips—caused by degraded piston seals. Third, you may notice intermittent gear slipping under load, particularly in higher gears, because the piston fails to maintain clamping force on clutch packs. Finally, erratic shift timing or neutral creep at idle often points to a stuck or scored piston bore, requiring immediate replacement of part 2093.352.037.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2093.352.037 |
| Material | Hardened alloy steel with PTFE seal coating |
| Outer Diameter | 85.0 mm (estimated) |
| Inner Diameter | 42.5 mm (estimated) |
| Height | 28.0 mm (estimated) |
| Weight | 0.34 kg (0.75 lbs) |
| OEM Reference | ZF 2093.352.037 |
| 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 may also be suitable for WG180 and WG200 variants where the clutch piston bore dimensions match, though cross-referencing with the OEM parts catalog is recommended. The piston interfaces directly with the 2094106010: SHIFT SYSTEM and the 2094206001: GEARSHIFT SHAFT to complete the hydraulic shift circuit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from clutch packs to output shaft |
| 2094304054 | MAIN SHAFT | Secondary torque transfer shaft for auxiliary gears |
| 2094106010 | SHIFT SYSTEM | Controls hydraulic routing to pistons and clutches |
| 2094206001 | GEARSHIFT SHAFT | Mechanical linkage for shift fork actuation |
| 2094306053 | GEARSHIFT SHAFT | Alternate shaft variant for WG130/WG131 |
| 0630513070 | SNAP RING | Retains piston and shaft assemblies in bore |
| 2094306019 | WASHER | Thrust washer for axial load distribution |
| 0732040444 | COMPRESSION SPRING | Returns piston to neutral position |
| 0732040728 | COMPRESSION SPRING | Heavy-duty spring for high-pressure circuits |
| 2093206001 | BUSH | Guides main shaft and reduces friction |
Frequently Asked Questions
Q: How do I know if the ZF 2093.352.037 piston is the correct replacement for my transmission?
A: Verify your transmission model plate—this piston fits WG100, WG130, and WG131 series. Measure the piston bore diameter (85 mm nominal) and compare to your existing part. Always inspect the 0630513070: SNAP RING for wear during replacement.
Q: Can I reuse the old piston seals when installing this new piston?
A: No. The piston 2093.352.037 includes an integrated PTFE seal. Reusing old seals will cause immediate oil leaks and gear slipping. Always replace the 0732040444: COMPRESSION SPRING simultaneously for proper return force.
Q: What tools are needed to install this piston in a WG130 transmission?
A: You will need a piston ring compressor, torque wrench, and seal installation tool. The 2093206001: BUSH must be aligned precisely before seating the piston to avoid scoring the bore.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
