Overview
The ZF 4657.183.040 LOOSE PARTS kit is a critical service component designed specifically for the WG 190 Series transmission. This genuine OEM assembly includes all necessary fasteners, seals, and positioning elements required to secure internal sub-assemblies during a major overhaul or rebuild. The kit sits within the main gear case, interfacing directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain precise alignment of planetary gear sets. The SKU 4657.183.040 is frequently ordered alongside the HOUSING REAR PART to complete a full casing refurbishment. Without this loose parts set, proper torque retention and oil sealing cannot be guaranteed.
Symptoms of Failure
- Transmission oil leaks at the housing joint: When the loose parts (gaskets and sealing rings) degrade, pressurized ATF escapes between the TRANSMISSION HOUSING and the front section, leaving visible drips under the vehicle.
- Gear slipping under load: Worn locating pins or bolts allow the HOUSING REAR PART to shift slightly, causing misalignment of clutch packs and intermittent power loss.
- Abnormal driveline vibration: A loose CYLINDRICAL PIN within the 4657.183.040 kit can create radial play, producing a low-frequency shudder during acceleration.
- Hard shifting or delayed engagement: Missing or broken cap screws from the kit prevent the valve body from seating correctly, leading to harsh 1-2 upshifts.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.183.040 |
| Material Composition | Steel (fasteners) / Nitrile rubber (seals) |
| Total Kit Weight | 0.85 kg (1.87 lbs) |
| Fastener Torque Spec | 45 Nm (33 ft-lbs) |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 4657.183.040 |
Compatibility
This genuine ZF 4657.183.040 LOOSE PARTS kit is engineered for the WG 190 Series transmission family. It is also compatible with the WG 180 and WG 200 models that share the same housing architecture. The kit works in concert with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to ensure a leak-free assembly. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201027 | HOUS.FRONT SECT | Front section housing the torque converter |
| 4657201012 | HOUSING REAR PART | Rear casing supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retainer for oil pump assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M8 bolt for valve body mounting |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil supply channel |
Frequently Asked Questions
Q: Can I reuse the old bolts from the 4657.183.040 kit during a rebuild?
A: No. ZF specifies that all fasteners in this loose parts kit are single-use torque-to-yield. Reusing them risks thread stripping and oil leaks at the HOUSING REAR PART interface.
Q: Does this kit include the CYLINDRICAL PIN for alignment?
A: Yes. The 4657.183.040 assembly contains two cylindrical pins that precisely locate the HOUS.FRONT SECT to the main housing.
Q: How do I verify this part fits my WG 190 transmission?
A: Check the stamped serial number on the TRANSMISSION HOUSING. If the prefix is WG190, WG180, or WG200, this kit is the correct OEM match.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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