Overview
The ZF 4616.306.093 FILLER PIECE is a precision-engineered OEM genuine component designed specifically for the WG 65 Series transmission family. This critical spacer element sits within the transmission housing assembly, functioning as a load-distributing shim that maintains precise axial clearance between rotating and stationary components. By ensuring correct gear alignment and bearing preload, the filler piece prevents metal-on-metal contact that would otherwise lead to premature wear. The SKU 4616.306.093 is manufactured to ZF’s exacting tolerances, guaranteeing a perfect fit when paired with the 4616101066: TRANSMISSION HOUSING and the 0636011118: HEXAGON SCREW that secures it in place.
Symptoms of Failure
- Oil seepage around the filler piece interface: When the 4616.306.093 wears or distorts, it compromises the seal between the 4616301307: HOUSING and adjacent components, leading to gradual transmission fluid loss. This often manifests as wet spots on the bell housing.
- Abnormal gear engagement noise: A worn filler piece allows excessive axial play, causing gears to clash during shifts. Operators may notice a distinct “clunking” sound when transitioning between forward and reverse in WG65-equipped vehicles.
- Intermittent slipping under load: As the filler piece degrades, gear stack tolerances widen, reducing clutch pack clamping force. This creates a sensation of power loss during acceleration, particularly in heavy-duty applications.
- Vibration at highway speeds: Misalignment caused by a compromised filler piece introduces driveline harmonics, felt as a low-frequency shudder through the chassis at 45-55 mph.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4616.306.093 |
| Material | High-strength steel (DIN 1.0503 equivalent) |
| Outer Diameter | 68.5 mm |
| Inner Diameter | 42.0 mm |
| Thickness | 3.2 mm |
| Weight | 0.085 kg |
| Surface Finish | Zinc-plated (ISO 2081) |
| OEM Reference | ZF 4616.306.093 |
| Torque Specification | 45 Nm (when paired with 0636011118) |
Compatibility
This filler piece is engineered for the ZF WG 65 Series, but its dimensional profile also suits several related heavy-duty transmissions. Confirmed compatible models include the WG180, WG200, WG210, and WG250. It is also used in certain off-highway variants of the Ecomat 4HP and 5HP series where the 4616301309: HOUSING configuration matches. Always verify the part number against your transmission’s serial plate before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101066 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011118 | HEXAGON SCREW | Secures filler piece to housing |
| 4616301307 | HOUSING | Intermediate housing for clutch pack |
| 4616301309 | HOUSING | Rear housing for output shaft |
| 0636011038 | HEXAGON SCREW | Fastener for housing assembly |
| 0636016015 | HEXAGON SCREW | High-torque bolt for main case |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0634313118 | O-RING | Fluid seal between housings |
| 0636304019 | SCREW PLUG | Oil drain port closure |
| 0634801152 | SEALING RING | Copper crush washer for plug |
