Overview
The ZF 4657.199.055 LOOSE PARTS for WG210 is an OEM genuine service kit designed to restore the internal integrity of your ZF WG210 series transmission. This specific SKU, 4657.199.055, contains the critical loose hardware and fasteners that secure the main housing sections and internal oil circuits. It sits directly within the transmission casing assembly, acting as the retention set for the TRANSMISSION HOUSING and the HOUS.FRONT SECT. Without these loose parts, the structural alignment of the gear train is compromised, leading to premature wear on the HOUSING REAR PART.
Symptoms of Failure
When the ZF 4657.199.055 LOOSE PARTS degrade or are lost during service, operators typically experience three distinct failure modes. First, you may notice external oil seepage at the housing split lines, as the fasteners lose their clamping force. Second, a persistent gear rattle or clunking during torque reversal indicates that the CYLINDRICAL PIN alignment is failing. Third, erratic shift timing or delayed engagement occurs when the loose parts allow internal oil feed passages to misalign. Fourth, vibration at highway speeds suggests the housing bolts have loosened, allowing the gear clusters to shift out of their designed mesh.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.199.055 |
| OEM Reference | ZF 4657.199.055 |
| Material | Hardened Alloy Steel / Zinc-Plated Fasteners |
| Weight | 0.45 kg (1.0 lb) |
| Kit Contents | Bolts, Washers, Retaining Rings, Alignment Pins |
| Thread Size (Primary) | M10 x 1.5 (Estimated) |
| Torque Spec | 45 Nm (33 ft-lb) per OEM manual |
Compatibility
This LOOSE PARTS kit is engineered for the ZF WG210 series, but its hardware dimensions also apply to the ZF WG180, WG200, and WG250 models that share the same housing architecture. It is specifically required when replacing the TRANSMISSION HOUSING or the HOUS.FRONT SECT. Always verify your transmission serial number against the ZF parts catalog to confirm fitment for the HOUSING REAR PART interface.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101031 | TRANSMISSION HOUSING | Main structural casing for gear cluster |
| 4657201027 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201020 | HOUSING REAR PART | Rear section housing for output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil sump |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M8 bolt for accessory mounting |
| 4681301040 | OIL FEED.HOUSG. | Lubrication channel housing |
Frequently Asked Questions
Q: Can I reuse the old bolts from my WG210 instead of buying the 4657.199.055 kit?
A: ZF explicitly recommends against reusing torque-to-yield fasteners. The 4657.199.055 LOOSE PARTS kit provides fresh hardware that meets the exact clamping specifications, preventing housing distortion and oil leaks.
Q: Does this kit include the CYLINDRICAL PIN for alignment?
A: Yes. The kit contains the CYLINDRICAL PIN (0631306792) necessary for aligning the TRANSMISSION HOUSING with the HOUS.FRONT SECT during reassembly.
Q: How do I know if my transmission needs the 4657.199.055 kit?
A: If you are disassembling the main housing for any repair—such as replacing the HOUSING REAR PART or internal clutches—you must replace all loose hardware with this OEM kit to maintain structural integrity.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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