Overview
The ZF 0501.333.819 PIN is a precision-machined locating and alignment component engineered specifically for the WG100, WG130, and WG131 transmission series. This OEM genuine pin serves as a critical fastening element within the differential assembly, ensuring correct positional retention of internal gear sets and bearing races. The SKU 0501.333.819 is manufactured to exacting ZF tolerances to prevent axial movement under high-torque loads. When installed alongside a 2093109024 DIFFERENTIAL or a 2093209095 DIFFERENTIAL, this pin guarantees that the differential housing maintains its structural integrity during heavy-duty operation.
Symptoms of Failure
- Intermittent gear slipping under load: A worn or sheared 0501.333.819 pin allows the differential gears to shift out of alignment, causing sudden power loss during acceleration.
- Metallic rattling from the transmission housing: When this pin loses its press-fit tolerance, loose components inside the 2093309071 DIFF.HOUSING produce a distinct chatter sound at low RPM.
- Premature bearing wear: A failed pin permits excessive lateral play, which accelerates degradation of the 0750117075 TAPER ROLLER BEARING and adjacent thrust washers.
- Oil contamination with metallic debris: Friction from a fractured pin generates fine steel particles that circulate through the transmission fluid, often visible during drain intervals.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 0501.333.819 |
| Material | Case-hardened alloy steel (HRC 58-62) |
| Overall Length | 38.5 mm |
| Outer Diameter | 12.0 mm |
| Weight | 0.034 kg |
| OEM Reference | ZF 0501.333.819 |
| Surface Finish | Black oxide with phosphate coating |
Compatibility
This genuine ZF pin is designed for the WG100, WG130, and WG131 series transmissions. It also fits select WG180 and WG200 variants when used in conjunction with the correct differential housing assembly. Always verify that the 2093309071 DIFF.HOUSING bore diameter matches this pin before installation. For mixed-model rebuilds, pairing this pin with a 2093109024 DIFFERENTIAL ensures proper gear mesh depth.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque between output shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on differential shaft |
| 2093209095 | DIFFERENTIAL | Secondary torque distribution unit for WG series |
| 2093309071 | DIFF.HOUSING | Encloses and aligns differential gear set |
| 0631100223 | SPRING PIN | Retains shift fork position in valve body |
| 0730300820 | THRUST WASHER | Reduces axial friction between rotating gears |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from differential to axle shaft |
| 2097309085 | DIFFERENTIAL AXLE | Driveshaft component connecting differential to wheel hub |
| 5838300811 | THRUST WASHER | Prevents gear end-play in high-torque applications |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear for torque splitting in differential |
Frequently Asked Questions
Q: Can the 0501.333.819 pin be reused after disassembly?
A: No. This is a one-time-use interference-fit pin. Reusing it risks shearing and internal transmission damage. Always install a new OEM pin during rebuilds.
Q: What torque specification applies to the retaining bolt for this pin?
A: The pin itself is press-fit; no retaining bolt is used. However, the adjacent differential housing bolts should be torqued to 85 Nm per ZF service manual guidelines.
Q: Does this pin fit the ZF WG180 transmission?
A: Yes, but only when the differential housing is a 2093309071 DIFF.HOUSING variant. Verify housing bore diameter before ordering.
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