Overview
The ZF 4657.183.254 LOOSE PARTS kit is a critical service component designed specifically for the WG 211 Series transmission. This genuine OEM assembly contains the essential fasteners, seals, and positioning elements required to secure the main transmission housing and internal sections during a rebuild or overhaul. Identified by SKU 4657.183.254, this loose parts set ensures that the TRANSMISSION HOUSING maintains its structural integrity under high torque loads. Without this precise hardware kit, the alignment of the HOUS.FRONT SECT and the HOUSING REAR PART cannot be guaranteed, leading to premature wear of internal planetary gears.
Symptoms of Failure
When the ZF 4657.183.254 LOOSE PARTS begin to degrade or are missing from the assembly, operators will notice distinct operational issues. Look for these specific failure symptoms to diagnose a worn or incomplete hardware set:
- Transmission oil leaks at the housing seam: A loose or fatigued bolt set causes the CYLINDRICAL PIN to shift, creating gaps that allow ATF fluid to escape.
- Gear slipping under load: If the front section housing is not torqued correctly due to degraded loose parts, the clutch packs lose alignment, resulting in intermittent power loss.
- Abnormal vibration or rattle from the bell housing: Missing or worn fasteners in this kit allow the housing sections to resonate against each other, producing a distinct metallic noise during gear changes.
- Difficulty engaging reverse gear: Misalignment caused by failing hardware directly impacts the shift rail positioning, making reverse engagement sluggish or impossible.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4657.183.254 |
| OEM Reference | ZF 4657.183.254 |
| Material Composition | Hardened Steel / Zinc-Plated Alloy |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| Kit Contents | Bolts, Washers, Dowel Pins, Sealing Rings |
| Thread Pitch | M10 x 1.5 (primary fasteners) |
| Operating Torque Range | 45–55 Nm |
Compatibility
This genuine OEM loose parts kit is engineered for the WG 211 Series transmission family. Based on the part type and housing geometry, it is also compatible with the following ZF models that share the same split-housing architecture: WG180, WG200, and WG210. It is not recommended for use in the WG120 or WG150 series due to different bolt patterns. Always verify the housing casting number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657301130 | HOUS.FRONT SECT | Front section housing for clutch assembly |
| 4657301131 | HOUSING REAR PART | Rear section housing for output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636102489 | CAP SCREW | High-tensile bolt for housing flange |
| 4656301148 | FIXING PLATE | Locks bearing in position |
| 0636102463 | CAP SCREW | M8 bolt for auxiliary housing |
| 4657201133 | SCREEN SHEET | Filter mesh for oil sump |
| 0636115287 | CAP SCREW | M12 bolt for rear cover |
| 4657301065 | PLATE | Thrust washer for planetary gear |
Frequently Asked Questions
Q: Can I reuse the old bolts from my WG211 instead of buying the 4657.183.254 kit?
A: No. ZF specifies that all fasteners in the loose parts kit are single-use torque-to-yield bolts. Reusing them risks bolt fatigue and sudden housing separation under load.
Q: Does this kit include the CYLINDRICAL PIN for alignment?
A: Yes. The 4657.183.254 kit includes the CYLINDRICAL PIN (part 0631306816) necessary to align the front and rear housing sections during assembly.
Q: How do I confirm this fits my WG180 transmission?
A: Check the casting number on your existing housing. If it matches the WG211 pattern (typically stamped near the bell housing flange), this kit is compatible. For absolute certainty, cross-reference your serial number with the OEM parts catalog.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
