Overview
The ZF 2095.129.004 BRAKE SHAFT is a critical internal component designed for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the primary actuation shaft for the integrated parking brake or output brake system, converting linear hydraulic or mechanical force into rotational motion to engage the brake drum. Positioned within the transmission’s rear housing, the brake shaft interfaces directly with the differential assembly to secure the output shaft when the vehicle is stationary. The SKU 2095.129.004 ensures a precise fit and factory-specified hardness, eliminating the risk of premature wear associated with aftermarket alternatives.
Symptoms of Failure
- Intermittent brake drag or incomplete release: A worn brake shaft can cause the parking brake to stick partially engaged, leading to increased fuel consumption and overheating of the DIFF.HOUSING.
- Oil seepage from the brake actuator area: Degraded shaft seals or surface scoring on the 2095.129.004 shaft allow transmission fluid to leak past the housing, visible as drips near the bell housing.
- Audible clunking during brake application: Excessive play in the brake shaft splines or bearing journals produces a metallic knock when the brake is engaged, often misdiagnosed as a failing TAPER ROLLER BEARING.
- Reduced holding power on inclines: If the brake shaft cannot fully rotate the cam mechanism, the vehicle may roll on slopes, indicating internal spline wear or shaft deformation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 2095.129.004 |
| Overall Length | 185 mm (estimated) |
| Shaft Diameter (bearing journal) | 28 mm |
| Spline Count | 16-tooth involute |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 0.85 kg |
| OEM Reference | ZF 2095.129.004 |
| Surface Finish | Ground & phosphated |
Compatibility
This brake shaft is engineered for ZF’s WG-series powershift transmissions, specifically the WG100, WG130, and WG131 models. It also fits select variants of the WG180 and WG200 series when used with the corresponding DIFFERENTIAL (part 2095109020) and DIFFERENTIAL (part 2095209037). Always verify the shaft’s engagement with the DIFFERENTIAL AXLE (2095309081) before installation, as minor housing variations exist in earlier WG131 builds.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2095109020 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports shaft radial/axial loads |
| 2095209037 | DIFFERENTIAL | Secondary torque split assembly |
| 2095309059 | DIFF.HOUSING | Encloses differential gears |
| 0631329086 | SPRING PIN | Secures shaft to actuator lever |
| 0730300820 | THRUST WASHER | Controls axial clearance |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2095309081 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Reduces friction on gear faces |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
ZF 2095.129.004 BRAKE SHAFT – Shaft RFQ Support
PartsZF supports RFQ preparation for ZF 2095.129.004 BRAKE SHAFT where shaft identification and documentation review are required before ordering.
Part-Number Summary
Use ZF number 2095.129.004 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: TRA 13
- Illustration section: BRAKE SHAFT
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 | 2095.129.004 |
|---|---|
| Normalized SKU | 2095129004 |
| Part name | BRAKE SHAFT |
| Product category | shaft |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
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 2094.110.011 P.T.O. SHAFT
- ZF 2094.110.014 P.T.O. SHAFT
- ZF 4642.303.002 OUTPUT SHAFT
- ZF 2093.110.011 P.T.O. SHAFT
- ZF 5838.300.106 INPUT SHAFT
