Overview
The ZF 4656.183.363 LOOSE PARTS set is a critical service kit designed for the WG 160 series transmission. This assembly contains the essential fasteners, seals, and positioning components required to secure the main structural elements of the gearbox. Specifically, this kit interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to ensure proper alignment and clamping force. The SKU 4656.183.363 is an OEM genuine part, meaning it meets ZF’s exact metallurgical and dimensional tolerances for long service life. Without this loose parts kit, the transmission cannot maintain the structural integrity needed to handle high torque loads.
Symptoms of Failure
- Oil weeping from housing joints: When the fasteners in this kit loosen or corrode, you will notice oil seepage between the HOUSING REAR PART and the main casing, leading to gradual fluid loss.
- Abnormal gear rattle under load: Worn or missing positioning pins cause micro-movement between the HOUSING REAR SECTION and the main body, resulting in audible gear clash during acceleration.
- Increased vibration at highway speeds: A compromised loose parts kit allows the transmission housing to flex, transmitting excessive vibration through the driveline.
- Hard shifting or gear hang: Misalignment caused by degraded hardware prevents the shift rails from moving freely, creating delayed engagement.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.183.363 |
| Material Composition | Steel (C45) with zinc-nickel plating |
| Weight (kit) | 0.85 kg (1.87 lbs) |
| Fastener Torque Spec | 45 Nm ± 5 Nm |
| Thread Size (primary bolts) | M10 x 1.5 |
| OEM Reference | ZF 4656.183.363 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This loose parts kit is specifically engineered for the ZF WG 160 series. It is also compatible with the WG 180 and WG 200 models when used in conjunction with the correct TRANSMISSION HOUSING variant. The kit is not suitable for the older WG 120 series due to different bolt patterns. Always verify your transmission’s serial number against the ZF parts catalog to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101056 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201077 | HOUSING REAR PART | Rear housing section for output shaft |
| 4656298049 | HOUSING REAR SECTION | Intermediate rear housing support |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 4656301148 | FIXING PLATE | Retains bearing in housing bore |
| 0636100817 | CAP SCREW | M10 bolt for housing fastening |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M8 bolt for accessory mounting |
Frequently Asked Questions
Q: Can I reuse the old fasteners from the 4656.183.363 kit during a rebuild?
A: No. ZF specifies that all fasteners in this loose parts kit are single-use. The zinc-nickel coating provides initial corrosion resistance, but the bolts stretch during torquing. Reusing them risks thread galling and reduced clamping force.
Q: Does this kit include the gaskets for the housing joints?
A: The 4656.183.363 kit contains only the loose hardware (bolts, pins, washers). For sealing, you must order the appropriate gasket set separately. The SCREEN SHEET (4656301016) is included in this kit for the oil pickup.
Q: How do I identify if my WG 160 needs this specific kit?
A: Check the transmission data plate. If the model number ends with “WG160” and the housing has a 10-bolt pattern on the rear cover, this is the correct kit. The HOUSING REAR PART (4656201077) must be present for compatibility.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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