ZF 4681.183.004 LOOSE PARTS for BP230 | OEM Genuine Part

Overview

The ZF 4681.183.004 LOOSE PARTS kit is an OEM genuine assembly component specifically engineered for the BP 230 series transmission. This critical set of loose hardware and fasteners secures internal guide sleeves and shift elements within the valve body and housing interface. The SKU 4681.183.004 is a direct replacement for the original factory configuration, ensuring that all loose components—including retaining clips, pins, and spacers—are correctly positioned to maintain hydraulic pressure integrity. When paired with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, this kit prevents axial play that can disrupt gear engagement.

Symptoms of Failure

• Erratic shift timing and delayed engagement: When the loose parts in this kit wear or become dislodged, the valve body loses precise alignment, causing harsh or delayed shifts between forward and reverse gears.
• Internal rattling or metallic noise from the bell housing: Worn retaining clips or pins allow guide sleeves to vibrate against the HOUSING REAR PART, producing a distinct rattle during idle or low-speed operation.
• Low hydraulic pressure and transmission slipping: A missing or damaged loose part can cause a pressure drop in the main circuit, leading to clutch pack slip under load and eventual overheating.
• Oil seepage at the housing joint: Improperly seated loose components can distort the seal surface between the HOUSING REAR SECTION and the main casing, resulting in external fluid leaks.

Technical Specifications

Compatibility

This LOOSE PARTS kit is primarily designed for the ZF BP 230 series transmissions. Based on its mechanical configuration, it is also compatible with the following ZF models that share the same valve body and housing architecture: WG180, WG200, WG210, and BP 220. Always verify the internal retaining ring and pin dimensions against your existing assembly before installation. For proper alignment, ensure the FIXING PLATE (4656301148) is torqued to factory specifications.

Related Components

Frequently Asked Questions

Q: Can I reuse the existing loose parts from my old BP230 transmission?
We strongly recommend replacing all loose parts with the OEM 4681.183.004 kit. Retaining clips and pins experience fatigue over time, and reusing them can lead to sudden failure and internal damage to the TRANSMISSION HOUSING.

Q: Does this kit include the cap screws or screen sheets?
No. The 4681.183.004 kit contains only the loose retaining hardware (clips, pins, spacers). You must order the CAP SCREW (0636100801) and SCREEN SHEET (4657301032) separately if needed.

Q: How do I verify if this part fits my WG180 transmission?
Measure the internal retaining ring groove diameter on your valve body. The 4681.183.004 is dimensionally identical to the original ZF factory loose parts used in WG180, WG200, and BP230 models. Cross-reference with the HOUS.FRONT SECT part number for absolute confirmation.