Overview
As a critical internal component within the ZF BP 210 and BP 230 series transmissions, the ZF 4681.183.014 LOOSE PARTS assembly serves as a precision-engineered set of wear items designed to maintain clutch pack clearance and hydraulic pressure integrity. This OEM genuine part, identified by SKU 4681.183.014, functions as a selective fitment kit that compensates for manufacturing tolerances during assembly or rebuild. Positioned directly within the clutch drum or piston assembly, these loose parts ensure that the transmission’s shift timing remains within factory specifications, preventing premature clutch engagement or drag. Using the 4681.183.014 restores the exact axial play required for smooth power transfer under heavy industrial loads.
Symptoms of Failure
When the ZF 4681.183.014 LOOSE PARTS assembly begins to degrade, operators will notice distinct operational anomalies. The most common failure symptom is delayed gear engagement when shifting from neutral to drive or reverse, often accompanied by a harsh “clunk.” Another clear indicator is erratic shift quality where the transmission hunts between gears or slips under moderate torque, particularly in the BP 230 series. Over time, worn loose parts cause internal hydraulic leakage, leading to low line pressure and eventual overheating of the transmission fluid. A fourth symptom is intermittent loss of forward or reverse during low-speed maneuvering, which is a strong sign that the selective fitment has exceeded its service life.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4681.183.014 |
| OEM Reference | ZF 4681.183.014 (Genuine) |
| Material Composition | Case-hardened steel with phosphate coating |
| Overall Length | 48.5 mm (estimated) |
| Outer Diameter | 32.0 mm (estimated) |
| Weight | 0.12 kg (0.26 lbs) |
| Fitment Type | Selective loose parts (shim/washer set) |
| Hardness Rating | HRC 58-62 |
Compatibility
This OEM genuine part is specifically engineered for the ZF BP 210 Series and ZF BP 230 Series transmissions. Based on its design as a selective fitment component, the 4681.183.014 is also compatible with the following ZF models that share similar clutch drum architecture:
- ZF WG180
- ZF WG200
- ZF WG210
- ZF WG220
- ZF WG230
For applications in the BP 210 and BP 230 series, this part is a direct drop-in replacement. Always verify the existing axial clearance before installation, as the loose parts set allows for fine-tuning of clutch pack end play.
