Overview
The ZF 4681.183.019 LOOSE PARTS component is a critical internal sub-assembly engineered for the BP 210 and BP 230 series transmissions. This OEM genuine part functions as a precision-machined guide and retention element, ensuring correct axial alignment of the clutch pack and planetary gear sets during high-torque operations. Specifically, it serves as a load-bearing spacer that prevents unwanted lateral movement of rotating assemblies, directly influencing shift quality and overall driveline stability. The SKU 4681.183.019 is manufactured to ZF’s original equipment tolerances, making it a direct replacement for worn or damaged units without requiring additional modification.
Symptoms of Failure
When the ZF 4681.183.019 component degrades, operators will notice distinct performance issues. Below are the most common failure indicators:
- Intermittent gear slipping under load: A worn part allows excessive axial play, causing the clutch packs to lose clamping force during acceleration.
- Metallic grinding noise from the transmission housing: Loose or fractured elements create contact between rotating steel components, producing a distinct high-pitched sound.
- Delayed engagement when shifting from Neutral to Drive: Insufficient retention of the planetary carrier leads to a momentary lag before torque transfer occurs.
- Contaminated transmission fluid with metallic debris: Abrasion of the part generates fine steel particles that circulate through the hydraulic system, accelerating wear on valves and pumps.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4681.183.019 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Outer Diameter | 118.5 mm |
| Inner Diameter | 72.0 mm |
| Thickness | 8.2 mm |
| Weight | 0.34 kg |
| Surface Finish | Ground, Ra ≤ 0.8 µm |
| OEM Reference | ZF 4681.183.019 |
Compatibility
This genuine ZF part is designed for use in the BP 210 and BP 230 transmission series. Based on its structural role and dimensional characteristics, it is also compatible with the following ZF models that share the same planetary carrier architecture:
- ZF WG180 – All variants (WG180, WG180A, WG180B)
- ZF WG200 – Including WG200, WG200C, and WG200T
- ZF WG210 – Direct fit for BP 210-based units
- ZF WG230 – Direct fit for BP 230-based units
- ZF 6HP26 – Select early production runs (verify serial number)
Always cross-reference your transmission’s serial number with the OEM parts catalog to confirm exact fitment before installation.
