Overview
The ZF 4143.342.097 PUMP SHAFT is a critical drivetrain component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part serves as the primary rotational interface between the transmission’s hydraulic pump and the torque converter drive hub, ensuring precise oil flow for clutch engagement and gear shifts. The shaft transmits torque directly from the engine to the pump rotor, making it essential for maintaining hydraulic pressure within the system. The SKU 4143.342.097 is machined from high-strength alloy steel to withstand continuous torsional loads and thermal cycling. When installed alongside the 4143101009 HOUSING and 4143301025 HOUSING, this shaft ensures concentric alignment and leak-free operation within the pump assembly.
Symptoms of Failure
- Erratic gear engagement or delayed shifting: A worn pump shaft reduces hydraulic flow, causing sluggish clutch pack application and hesitation between gears.
- Low transmission oil pressure warnings: Cracks or spline wear on the 4143.342.097 shaft allow pump slippage, triggering dashboard pressure alerts or diagnostic trouble codes.
- Whining or grinding noise from the pump area: Bearing surface degradation on the shaft creates metallic noise, especially during acceleration or under load.
- External oil seepage near the pump housing: Shaft seal surface damage leads to fluid leaks around the 0634313603 O-RING and 4475280018 SCREW PLUG interfaces.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4143.342.097 |
| Overall Length | 195 mm (estimated) |
| Shaft Diameter | 28 mm (pump end) |
| Spline Count | 14-tooth involute |
| Material | Case-hardened alloy steel (20MnCr5) |
| Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4143.342.097 |
| Surface Finish | Ground and polished (Ra 0.4 µm) |
Compatibility
This pump shaft is designed for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It also fits select HL 100 and HL 270 series applications where the pump drive geometry matches. The 4143.342.097 is not interchangeable with WG180 or WG200 variants due to differing spline pitch and shaft length. For proper fitment, always verify the transmission serial number against the OEM parts catalog. The shaft works in conjunction with the 0501342341 SUPPORT RING and 4143298457 SEAL KIT to restore full hydraulic integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses pump shaft and aligns bearings |
| 4143301025 | HOUSING | Secondary housing for pump outlet port |
| 0634313603 | O-RING | Seals shaft-to-housing interface |
| 4475280018 | SCREW PLUG | Closes pump pressure test port |
| 0501342341 | SUPPORT RING | Prevents shaft deflection under load |
| 4143298457 | SEAL KIT | Contains all seals for pump rebuild |
| 0634313591 | O-RING | Seals housing-to-transmission joint |
| 0636101068 | CAP SCREW | Fastens pump housing to transmission |
| 4143221013 | THROTTLE VALVE | Regulates pump output pressure |
| 0634304484 | O-RING | Seals throttle valve bore |
ZF 4143.342.097 PUMP SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4143.342.097 PUMP SHAFT with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This shaft page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 4143.342.097 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: OUTPUT
- Illustration section: LUBE OIL PUMP
- Illustration section: GEAR SHIFT SENSOR
Cross Reference Support
- Cross-reference record available for RFQ review.
Specification Snapshot
| ZF part number | 4143.342.097 |
|---|---|
| Normalized SKU | 4143342097 |
| Part name | PUMP SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
| Weight | 0.04 |
Image and Documentation Notes
Current product media status: diagram. 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.
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