Overview
The ZF 4681.183.002 LOOSE PARTS kit is a critical service assembly designed exclusively for the BP 230 series transmission. This genuine OEM part contains the necessary loose components—such as seals, retaining rings, and small hardware—required to secure and seal the main housing sections during a rebuild or overhaul. Positioned at the interface between the HOUS.FRONT SECT and the HOUSING REAR PART, this kit ensures that the transmission maintains its structural integrity under high torque loads. The SKU 4681.183.002 is factory-matched to the BP 230 platform, guaranteeing a precise fit when paired with the TRANSMISSION HOUSING and the HOUSING REAR SECTION.
Symptoms of Failure
- External oil seepage at the housing joint: When the loose parts in this kit degrade, you may notice fluid weeping between the front and rear housing sections, particularly after extended operation.
- Abnormal gear engagement noise: Worn retaining components can allow micro-movement of the housing halves, leading to a distinct clatter or whine during gear shifts.
- Increased vibration at the bell housing: A loose fit caused by fatigued hardware often transmits excessive vibration through the driveline, especially under load.
- Intermittent loss of hydraulic pressure: If the sealing elements within the 4681.183.002 kit fail, internal pressure can bleed off, causing delayed or harsh shifting.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4681.183.002 |
| Material Composition | Steel alloy with nitrile rubber seals |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF BP 230 Series |
| Kit Contents | Retaining rings, O-rings, dowel pins, cap screws |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF loose parts kit is engineered for the BP 230 transmission family. It is directly compatible with models including the BP 230, BP 230C, and BP 230D. While primarily designed for these units, the 4681.183.002 may also be used in select WG180 and WG200 series transmissions that share the same housing interface geometry. Always verify fitment by cross-referencing your existing housing part numbers, such as the HOUS.FRONT SECT or HOUSING REAR PART, to confirm compatibility.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201166 | HOUS.FRONT SECT | Forward section of the transmission housing |
| 4657201168 | HOUSING REAR PART | Rear housing segment for torque converter |
| 4657298101 | HOUSING REAR SECTION | Extended rear housing component |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for housing flange |
| 4656301148 | FIXING PLATE | Retainer for internal components |
| 4657301032 | SCREEN SHEET | Filter mesh for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Secondary filter mesh |
| 0636100803 | CAP SCREW | Alternate fastener for housing |
Frequently Asked Questions
Q: Can I use the 4681.183.002 kit on a ZF WG200 transmission?
A: While the kit is primarily for the BP 230 series, it may fit WG200 models if the housing interface matches. We recommend comparing your existing HOUS.FRONT SECT part number to confirm.
Q: What is included in the LOOSE PARTS kit?
A: The kit contains all small hardware—retaining rings, O-rings, dowel pins, and cap screws—needed to secure the housing sections. It does not include the main housing or large castings.
Q: How do I know if my 4681.183.002 parts are worn?
A: Look for oil leaks at the housing seam, unusual gear noise, or vibration. If you notice these symptoms, inspect the kit components and replace them alongside the HOUSING REAR SECTION if needed.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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