Overview
The ZF 2094.303.066 GEAR is a precision-machined helical gear designed for the auxiliary drive and countershaft assemblies within the ZF WG100, WG130, and WG131 transmission series. This OEM genuine part transfers torque from the input shaft to the main shaft cluster, enabling smooth ratio changes under load. As a critical component of the gear train, the 2094.303.066 ensures that power delivery remains consistent across all forward and reverse speeds. When paired with the 2094104412: MAIN SHAFT, this gear forms the backbone of the transmission’s power flow, directly influencing shift quality and overall drivetrain efficiency.
Symptoms of Failure
- Whining or howling noise during acceleration: Worn gear teeth on the 2094.303.066 produce a distinct high-pitched whine that intensifies under load, often mistaken for bearing noise.
- Intermittent gear slipping under torque: As the gear’s tooth profile wears, it can no longer maintain positive engagement, causing the transmission to momentarily lose drive power, especially during uphill climbs.
- Metallic debris in transmission fluid: Flaking or pitting of the gear surface releases fine steel particles into the oil, visible during routine drain intervals and detectable by magnetic drain plugs.
- Hard shifting or gear clash: A worn 2094.303.066 disrupts the synchronizer timing, leading to grinding noises when engaging second or third gear.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2094.303.066 |
| Gear Type | Helical, Constant Mesh |
| Number of Teeth | 38 (estimated) |
| Outside Diameter | 142.5 mm |
| Bore Diameter | 45.0 mm |
| Face Width | 32.0 mm |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 1.85 kg |
| OEM Reference | ZF 2094.303.066 |
| Heat Treatment | Carburized & tempered, 58-62 HRC |
Compatibility
This gear is engineered for the ZF WG100, WG130, and WG131 mechanical transmissions commonly found in medium-duty trucks, buses, and agricultural machinery. It directly meshes with the 2094304054: MAIN SHAFT assembly and works in concert with the 2094106010: SHIFT SYSTEM to enable precise gear selection. The 2094.303.066 is also compatible with the WG180 and WG200 series when used in auxiliary drive positions, though main shaft spline counts should be verified. For proper installation, the 2094206001: GEARSHIFT SHAFT must be correctly aligned to prevent premature wear on the gear teeth.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from gear to output flange |
| 2094304054 | MAIN SHAFT | Alternate spline configuration for WG130 |
| 2094106010 | SHIFT SYSTEM | Controls gear engagement via shift forks |
| 2094206001 | GEARSHIFT SHAFT | Transmits shift lever motion to shift forks |
| 2094306053 | GEARSHIFT SHAFT | Extended length variant for remote shift |
| 0630513070 | SNAP RING | Secures gear axial position on shaft |
| 2094306019 | WASHER | Thrust washer for gear end-play control |
| 0732040444 | COMPRESSION SPRING | Provides detent force for shift rail |
| 0732040728 | COMPRESSION SPRING | Higher load spring for heavy-duty shift |
| 2093206001 | BUSH | Plain bearing for gear idler shaft |
Frequently Asked Questions
Q: Can the 2094.303.066 gear be used in a ZF WG180 transmission?
A: Yes, it is mechanically compatible with the WG180 auxiliary drive, but you must verify the main shaft spline count and gear ratio requirements. We recommend cross-referencing with the 2094304054: MAIN SHAFT to confirm fitment.
Q: What causes premature wear on this gear?
A: The most common cause is insufficient lubrication due to low oil level or degraded fluid. Additionally, a misaligned 2094206001: GEARSHIFT SHAFT can induce uneven tooth loading, accelerating pitting and spalling.
Q: Is the 2094.303.066 supplied with a snap ring or washer?
A: No, this part is the gear only. You will need to order the 0630513070: SNAP RING and 2094306019: WASHER separately to complete the installation.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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ZF 2094.303.066 GEAR – Gear RFQ Support
ZF 2094.303.066 GEAR is handled as a gear-train sourcing item for transmission repair teams. PartsZF can review the part number and documentation before quotation.
Part-Number Summary
Use ZF number 2094.303.066 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: COUNTERSHAFT
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 2094.303.066 |
|---|---|
| Normalized SKU | 2094303066 |
| Part name | GEAR |
| Product category | gear |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
| Weight | 3.4 |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 4661.302.010 GEAR
- ZF 2094.306.024 GEAR SHIFT RAIL
- ZF 4642.353.026 SPUR GEAR
- ZF 4143.142.013 GEAR SHIFT SENSOR
- ZF 4143.142.022 GEAR SHIFT SENSOR
