Overview
The ZF 4681.183.006 LOOSE PARTS kit is a critical service component designed specifically for the BP210 and BP230 series transmissions. This genuine OEM assembly contains the internal fasteners, locating pins, and retaining elements that secure the main structural housings of the gearbox. Without this kit, the precise alignment between the TRANSMISSION HOUSING and the HOUS.FRONT SECT cannot be maintained under heavy torque loads. The SKU 4681.183.006 acts as the mechanical “glue” that prevents relative movement between the HOUSING REAR PART and the main CASE assembly. Each loose part in this set is manufactured to ZF’s exacting tolerances, ensuring that the clamping forces are distributed evenly across the mating surfaces.
Symptoms of Failure
- Transmission case oil seepage at split lines: When the 4681.183.006 fasteners lose their preload, oil begins to weep between the housing halves, leaving visible residue on the bell housing.
- Audible knocking during gear engagement: Worn or missing loose parts allow the HOUSING REAR PART to shift microscopically, producing a distinct metallic clunk when shifting from neutral to drive.
- Progressive gear slippage under load: As the structural integrity degrades, the main shaft alignment drifts, causing the clutch packs to slip intermittently during uphill hauls.
- Vibration at highway speeds: A loose CASE assembly creates harmonic vibrations that are felt through the chassis at 55-65 mph.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4681.183.006 |
| Material Composition | Case-hardened steel (fasteners) / Nitrile rubber (seals) |
| Total Kit Weight | 0.85 kg (1.87 lbs) |
| Fastener Torque Spec | 85 Nm ± 5 Nm (dry) |
| Operating Temperature Range | -40°C to +120°C |
| ZF Reference | BP210 / BP230 Loose Parts Set |
Compatibility
This genuine ZF 4681.183.006 kit is engineered for the BP210 and BP230 transmission series. It is also compatible with the WG180 and WG200 models where the housing split-line configuration matches the BP architecture. The kit interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT on all variants. Always verify the production date of your unit; post-2015 BP230 units require this specific revision of the loose parts set.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4681101002 | TRANSMISSION HOUSING | Main structural casing for gear cluster |
| 4681201007 | HOUS.FRONT SECT | Forward section housing the input shaft |
| 4681201008 | HOUSING REAR PART | Rear casing supporting the output flange |
| 4681298001 | CASE | Complete case assembly for the gear train |
| 0631306074 | CYLINDRICAL PIN | Alignment dowel for housing registration |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4681301015 | FIXING PLATE | Locking plate for fastener retention |
| 4681301016 | SCREEN SHEET | Fine mesh filter for oil pickup |
| 4681301017 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M12 bolt for heavy-duty clamping |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my BP210 when installing this 4681.183.006 kit?
A: No. ZF specifies that all loose parts in this set are single-use. The fasteners are torque-to-yield and will lose clamping force if retightened, leading to oil leaks and potential case separation.
Q: Does this kit include the gaskets for the HOUS.FRONT SECT interface?
A: The 4681.183.006 contains only the loose hardware (bolts, pins, and plates). You must order the corresponding gasket set separately for the BP210 or BP230 series to complete the seal.
Q: How do I verify that this part fits my WG180 transmission?
A: Measure the distance between the dowel pin holes on your CASE assembly. If the center-to-center spacing is 210 mm, the 4681.183.006 is the correct revision for your unit.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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