Overview
The ZF 4651.183.043 LOOSE PARTS kit is a critical service assembly designed specifically for the BP 230 series transmission. This genuine OEM part set contains the essential small components—including seals, retainers, and locating hardware—that secure and align internal assemblies within the transmission housing. The SKU 4651.183.043 is typically deployed during a full rebuild or major overhaul to replace worn fasteners and loose elements that can compromise gear train stability. When installed alongside the TRANSMISSION HOUSING, this kit ensures that all internal clearances remain within factory tolerances, preventing premature wear on planetary gears and clutch packs.
Symptoms of Failure
- Transmission oil leaks at housing joints: Worn loose parts can cause the HOUS.FRONT SECT to separate slightly, allowing ATF to weep past gaskets.
- Intermittent gear slipping under load: Degraded retainers in the 4651.183.043 kit may allow the HOUSING REAR PART to shift, causing clutch pack clearance issues.
- Unusual metallic rattling from the bell housing: Loose fasteners can permit the HOUSING REAR SECTION to vibrate against the main case, generating noise during deceleration.
- Hard shifting or delayed engagement: When the loose parts kit fails, valve body alignment can drift, leading to erratic hydraulic pressure delivery.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4651.183.043 |
| OEM Reference | ZF BP230 Series |
| Kit Contents | Retaining rings, dowel pins, sealing washers, locating screws |
| Material | Case-hardened steel / Nitrile rubber seals |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Dimensions (packaged) | 150 x 100 x 40 mm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4651.183.043 loose parts kit is engineered for the BP 230 transmission family. Based on its design and fastener specifications, it is also compatible with the following ZF models that share the same housing architecture: WG180, WG200, WG210, and BP 230. Always verify the specific housing variant—particularly if your unit uses the TRANSMISSION HOUSING or the HOUS.FRONT SECT—to confirm fitment. The kit is not backward-compatible with older ZF 4HP series without adapter modifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657201168 | HOUSING REAR PART | Rear housing segment for output shaft |
| 4657298101 | HOUSING REAR SECTION | Extended rear housing cover |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retains valve body in position |
| 4657301032 | SCREEN SHEET | Filter mesh for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen |
| 0636100803 | CAP SCREW | High-torque housing bolt |
Frequently Asked Questions
Q: Can I reuse the old loose parts from my BP230 rebuild?
No. ZF recommends always replacing the 4651.183.043 kit during any housing disassembly. The fasteners are torque-to-yield and lose clamping force after removal, which can lead to oil leaks or gear misalignment.
Q: Does this kit include the bolts for the housing rear section?
This kit contains retaining rings, pins, and sealing washers. For the specific cap screws that attach the HOUSING REAR SECTION, you will need to order part 0636100803 separately.
Q: How do I verify if my transmission uses the BP230 housing?
Check the casting number on the main TRANSMISSION HOUSING. If it ends with 4657101078, this kit is the correct match. For other variants, consult the compatibility table above.
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Phone: +86 158 2286 3467 |
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