Overview
The ZF 4651.183.042 LOOSE PARTS for BP230 is a critical internal component set designed specifically for the BP 230 series transmission. This OEM genuine part, identified by SKU 4651.183.042, comprises the necessary loose hardware and small assembly elements that secure and align key transmission sections. It sits within the main casing assembly, working in conjunction with the TRANSMISSION HOUSING to ensure proper torque distribution and structural integrity. Without these loose parts, the transmission’s internal geometry can shift, leading to premature wear on adjacent components.
Symptoms of Failure
- Transmission oil seepage at casing joints: When the 4651.183.042 loose parts degrade, the seal between the HOUS.FRONT SECT and the main housing weakens, causing fluid to weep under load.
- Intermittent gear engagement hesitation: Worn or missing loose parts can allow the HOUSING REAR PART to shift slightly, resulting in delayed or rough shifting during acceleration.
- Unusual metallic rattling from the bell housing: Loose fasteners within this set can cause the HOUSING REAR SECTION to vibrate against the main casing, producing a distinct rattle at idle.
- Increased driveline backlash: As the loose parts lose their clamping force, rotational play develops between the housing sections, leading to a noticeable clunk when shifting between forward and reverse.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4651.183.042 |
| Component Type | Loose Parts Kit (Hardware & Fasteners) |
| Material | High-Tensile Steel with Corrosion-Resistant Coating |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| OEM Reference | ZF BP230 Series |
| Thread Pitch (primary) | M8 x 1.25 (metric) |
| Torque Specification | 25 Nm (18.4 lb-ft) dry |
Compatibility
This 4651.183.042 loose parts kit is engineered for the ZF BP230 transmission family. It is also compatible with the following ZF models that share the same housing architecture: WG180, WG200, WG210, and the HP500 series when fitted with BP230-style casing interfaces. Always verify your transmission’s serial number against the OEM parts catalog before installation. For full assembly, this kit works alongside the CYLINDRICAL PIN and CAP SCREW to secure the housing sections.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201168 | HOUSING REAR PART | Rear housing segment for output shaft |
| 4657298101 | HOUSING REAR SECTION | Final rear casing cover section |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retention plate for internal components |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary mesh filter for return line |
| 0636100803 | CAP SCREW | Alternate thread fastener for deep sections |
Frequently Asked Questions
Q: Can I reuse the old loose parts from my BP230 rebuild?
A: ZF engineering recommends replacing all loose parts (SKU 4651.183.042) during any major housing service. These fasteners are torque-to-yield and lose clamping force after initial installation, which can lead to oil leaks or housing misalignment.
Q: Does this kit include the cap screws for the rear housing section?
A: No, the 4651.183.042 kit contains the specific loose hardware for the BP230 internal assembly. For the rear housing cap screws, you will need the CAP SCREW (0636100803) purchased separately.
Q: How do I verify this part fits my WG200 transmission?
A: Check the casting number on your transmission’s TRANSMISSION HOUSING. If it begins with “BP230” or “WG200-“, this loose parts kit is fully compatible. Always cross-reference with your OEM parts manual.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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