Overview
The ZF 4644.303.253 OUTPUT SHAFT is a critical torque-transfer component engineered specifically for the WG 200 series transmission family. Positioned at the rear of the gearbox assembly, this OEM genuine part transmits rotational power from the planetary gear set to the driveline. The SKU 4644.303.253 interfaces directly with the OUTPUT FLANGE and is secured within the TRANSMISSION HOUSING, ensuring precise alignment and minimal vibration during high-torque operations. Manufactured to ZF’s original specifications, this shaft guarantees long service life in heavy-duty industrial applications.
Symptoms of Failure
- Oil seepage at the rear seal area: A worn output shaft bearing journal or surface scoring can cause transmission fluid to leak past the seal, leaving puddles under the vehicle.
- Audible clunking or whining during gear engagement: Excessive play in the shaft splines or bearing surfaces produces metallic noises, especially when shifting between forward and reverse.
- Vibration through the chassis at highway speeds: A bent or fatigued output shaft creates driveline imbalance, felt as rhythmic shaking that worsens with RPM.
- Intermittent power loss or gear slipping: Worn splines on the 4644.303.253 can fail to properly engage the DISCONNECTION clutch, resulting in momentary torque interruption.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.303.253 |
| OEM Reference | ZF 4644.303.253 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 385 mm |
| Spline Diameter | 42 mm (involute spline) |
| Weight | 4.8 kg |
| Surface Treatment | Black oxide + phosphate coating |
| Hardness | 58–62 HRC (case depth 0.8–1.2 mm) |
Compatibility
This genuine ZF output shaft is designed for the WG 200 series transmissions, including models WG180, WG200, and WG210. It is also compatible with certain variants of the WG150 when used with the appropriate ADAPTER kit. The 4644.303.253 replaces earlier part numbers 4644.303.250 and 4644.303.251. Always verify transmission serial number against ZF documentation before installation. The shaft is secured using the HEXAGON SCREW (M12x1.5) torqued to 120 Nm.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105423 | DISCONNECTION | Clutch assembly for power take-off engagement |
| 4644303054 | OUTPUT FLANGE | Connects shaft to driveshaft yoke |
| 0636021010 | HEXAGON SCREW | Fastens output flange to shaft |
| 4644101229 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301227 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 4475280078 | ADAPTER | Interface plate for non-standard bellhousings |
| 0730365067 | TYPE PLATE | Identification label with transmission specs |
| 0631311009 | GROOVED STUD | Alignment dowel for housing assembly |
| 4644301298 | COVER PLATE | Seals rear bearing access port |
| 0634306525 | O-RING | Hydraulic seal for output shaft bore |
ZF 4644.303.253 OUTPUT SHAFT – Shaft RFQ Support
PartsZF supports RFQ preparation for ZF 4644.303.253 OUTPUT SHAFT where shaft identification and documentation review are required before ordering.
Part-Number Summary
Use ZF number 4644.303.253 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
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 | 4644.303.253 |
|---|---|
| Normalized SKU | 4644303253 |
| Part name | OUTPUT 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
