Overview
This OEM genuine ZF 4657.109.426 component is a critical internal structural element designed specifically for the WG190 and WG210 series transmissions. It functions as a precision-machined locating and sealing interface within the transmission’s main housing assembly, ensuring correct alignment of rotating shafts and hydraulic circuits. The SKU 4657.109.426 is manufactured to ZF’s exacting tolerances, providing a direct replacement that restores factory-specified clearances and prevents fluid bypass between chambers. When installed alongside the 4657101080: TRANSMISSION HOUSING, it forms a sealed, rigid foundation for the planetary gear sets and clutch packs.
Symptoms of Failure
- Oil seepage at the housing joint: A worn or distorted 4657.109.426 allows transmission fluid to weep past the mating surface, leaving visible drips on the bell housing or under the vehicle.
- Erratic gear engagement or delayed shifts: When this part loses its dimensional stability, it can misalign the valve body or governor, causing harsh or slipping shifts under load.
- Metallic debris in the oil pan: Excessive wear on the 4657.109.426 can generate fine metal particles as rotating components contact the housing, indicating imminent internal damage.
- Vibration during acceleration: A compromised locating surface allows the main shaft to deviate from its true centerline, producing low-frequency driveline vibration.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.109.426 |
| Material | High-strength aluminum alloy (A356-T6) |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Length | 245 mm |
| Overall Width | 180 mm |
| Overall Height | 95 mm |
| Bolt Hole Pattern | 6x M10 x 1.5 on 130 mm PCD |
| Surface Finish | Anodized, machined sealing faces |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4657.109.426 part is engineered for the WG190 and WG210 transmission families. It is also compatible with the following ZF model variants that share the same housing architecture: WG180, WG200, WG211, and WG212. The part interfaces directly with the 4657201167: HOUS.FRONT SECT and the 4657201171: HOUSING REAR PART, ensuring a precise fit across multiple generations of these heavy-duty transmissions. For applications using the 4657298103: HOUSING REAR SECTION, verify serial number compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for gear and clutch assembly |
| 4657201167 | HOUS.FRONT SECT | Front section housing for input shaft and pump |
| 4657201171 | HOUSING REAR PART | Rear housing section supporting output shaft |
| 4657298103 | HOUSING REAR SECTION | Alternate rear housing variant for specific models |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M10 fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retainer plate for internal component positioning |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit protection |
| 4657301035 | SCREEN SHEET | Secondary mesh filter for oil return line |
| 0636100803 | CAP SCREW | M12 fastener for high-torque housing joints |
Frequently Asked Questions
Q: Can the 4657.109.426 be reused if it shows no visible damage?
We strongly recommend replacement whenever the transmission is disassembled for overhaul. Even minor distortion can cause oil leaks or shift quality issues over time, as the part serves as a precision locating surface.
Q: Is this part interchangeable between WG190 and WG210 transmissions?
Yes, the 4657.109.426 is a shared component across both series. However, always verify the production date of your transmission, as very early WG190 units may use a slightly different variant.
Q: What torque specification should be used for the bolts securing this part?
ZF specifies 45 Nm (33 ft-lbs) for the M10 cap screws, applied in a crosswise pattern. Use new 0636100801: CAP SCREW fasteners to ensure proper clamping force.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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