Overview
The ZF 4644.103.482 OUTPUT for WG200 is a critical drivetrain component engineered to transfer torque from the transmission’s planetary gearset to the output flange. Positioned at the rear of the WG 200 Series housing, this OEM genuine part ensures precise rotational alignment and load distribution under high-stress industrial applications. The SKU 4644.103.482 is machined from hardened alloy steel to withstand continuous heavy-duty cycles, making it a direct replacement for worn or damaged outputs in ZF’s WG180 and WG200 platforms. When paired with a robust TRANSMISSION HOUSING (4644101249), this output shaft maintains structural integrity even under peak torque demands.
Symptoms of Failure
- Oil seepage at the output seal – A worn 4644.103.482 output can cause fluid migration past the seal, leading to visible drips under the bell housing. This is a common long-tail search query for “ZF WG200 output shaft oil leak.”
- Vibration during gear engagement – Excessive play in the output splines or bearing journals creates low-frequency shuddering, especially when shifting between forward and reverse. Operators often search for “ZF transmission vibration when accelerating.”
- Intermittent gear slipping under load – As the output’s spline teeth wear, torque transfer becomes erratic, causing the transmission to momentarily lose drive. This symptom is frequently queried as “WG200 slipping in high gear.”
- Metallic grinding noises – Debris from a failing output can contaminate the O-RING (0634306323) and adjacent components, producing a distinct grinding sound during operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.103.482 |
| Material | Hardened alloy steel (40CrMnMoS8-6) |
| Overall Length | 285 mm |
| Spline Diameter | 42 mm (12-tooth involute) |
| Weight | 3.7 kg |
| OEM Reference | ZF 4644.103.482 |
| Surface Treatment | Zinc-nickel plating (anti-corrosion) |
Compatibility
This output shaft is designed for the ZF WG 200 Series, including models WG180, WG200, and WG210. It directly replaces the original output in both standard and reinforced housing configurations. For proper installation, ensure the TRANSMISSION HOUSING (4644301402) is free of cracks and that the COVER PLATE (4644301298) is torqued to factory specifications. The 4644.103.482 is not backward-compatible with older WG150 or WG160 units without housing modification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101249 | TRANSMISSION HOUSING | Encloses and supports the gearset and output shaft |
| 4644301402 | TRANSMISSION HOUSING | Alternate housing variant for reinforced applications |
| 4644301298 | COVER PLATE | Seals the rear housing opening and retains output bearing |
| 0634306323 | O-RING | Prevents fluid leakage between housing and cover plate |
| 0636305026 | SCREW PLUG | Closes oil drain or fill ports in the housing |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic fluid flow |
| 4644301088 | SEALING CAP | Protects unused ports from contamination |
| 4644159357 | SHIFT SYSTEM | Controls clutch engagement and gear selection |
| 4644306513 | COVER | Upper housing cover for access to valve body |
| 4644306555 | COVER | Lower housing cover for sump protection |
