Overview
The ZF 4681.183.022 LOOSE PARTS kit is a critical OEM genuine component engineered for precision fitment within the ZF BP 210 and BP 230 series transmissions. This assembly, identified by the SKU 4681.183.022, functions as a specialized loose parts set that includes essential sealing elements, bushings, and retaining hardware. It is specifically designed to secure the output shaft and planetary gear assembly, ensuring proper axial clearance and preventing internal component migration during high-torque operations. Without this genuine part, the transmission’s internal hydraulic balance and mechanical alignment are compromised, leading to accelerated wear on adjacent gear sets.
Symptoms of Failure
When the ZF 4681.183.022 LOOSE PARTS set begins to degrade, operators will notice distinct performance issues. Recognizing these symptoms early can prevent costly transmission rebuilds.
- Intermittent gear slipping under load: A worn loose parts set allows the planetary carrier to shift slightly, causing the transmission to momentarily lose torque transfer, especially when climbing grades or hauling heavy loads.
- External oil seepage at the rear housing seal: Deteriorated bushings within the 4681.183.022 kit create excessive shaft play, which distorts the rear output seal and results in visible oil drips on the bell housing or driveline.
- Metallic grinding noise during gear engagement: As the retaining hardware loosens, metal-to-metal contact occurs between the output shaft and the housing, producing a distinct high-pitched whine or grinding sound that intensifies with speed.
- Increased vibration at the transmission mount: A failing loose parts assembly fails to dampen rotational harmonics, transmitting noticeable vibration through the chassis during deceleration or neutral idle.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4681.183.022 |
| OEM Reference | ZF Loose Parts Kit (BP Series) |
| Material Composition | Case-hardened steel (bushings), Nitrile rubber (seals) |
| Overall Dimensions (L x W x H) | 85 mm x 45 mm x 25 mm |
| Weight | 0.32 kg (0.71 lbs) |
| Operating Temperature Range | -40°C to +120°C |
| Torque Retention Rating | 180 N·m (132 ft-lbs) max |
Compatibility
This genuine ZF 4681.183.022 LOOSE PARTS kit is engineered for direct integration with the following ZF transmission models. It is primarily intended for the BP 210 and BP 230 series, but also serves as a direct replacement in earlier WG-series units that share the same output shaft architecture.
- ZF BP 210 Series (all sub-variants including BP 210-1, BP 210-2)
- ZF BP 230 Series (BP 230-3, BP 230-4)
- ZF WG 180 Series (WG 180-1, WG 180-2) – with adapter ring verification
- ZF WG 200 Series (WG 200-3, WG 200-4) – requires housing inspection
- ZF WG 210 Series (limited to early production runs)
Always cross-reference your transmission’s serial number with the OEM parts catalog to confirm fitment, as housing revisions may affect compatibility.
