Overview
The ZF 4657.172.045 is a critical OEM genuine component engineered specifically for the WG 190 series transmission. This precision-machined part functions as a structural and hydraulic interface within the gearbox, ensuring correct alignment of internal shafts and maintaining oil pressure integrity during high-torque operations. The SKU 4657.172.045 is designed to withstand extreme thermal cycling and mechanical stress, making it essential for heavy-duty industrial applications. When installed correctly, this part directly supports the TRANSMISSION HOUSING assembly, providing a sealed environment for rotating components.
Symptoms of Failure
- Oil seepage at the housing joint: A worn 4657.172.045 often causes transmission fluid to leak between the HOUS.FRONT SECT and the rear casing, leading to low fluid levels and eventual gear slipping.
- Abnormal gear engagement noise: When this part fatigues, misalignment between the HOUSING REAR PART and the main shaft produces a distinct grinding sound during shifting.
- Intermittent loss of drive: A cracked or distorted 4657.172.045 can cause the HOUSING REAR SECTION to shift under load, resulting in temporary power loss under heavy acceleration.
- Contaminated transmission fluid: Debris ingress through a compromised seal area accelerates wear on internal bearings and clutches.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.172.045 |
| Material | High-strength aluminum alloy (EN AC-42100) |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Length | 215 mm |
| Mounting Bolt Pattern | 6x M10 on 145 mm PCD |
| Seal Surface Hardness | HRC 45-50 |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 4657.172.045 (Genuine) |
Compatibility
This genuine ZF part is primarily designed for the WG 190 series transmission, but it also fits select variants in the WG180 and WG200 families. It is directly compatible with all WG190 models manufactured after 2012, including the WG190-110, WG190-120, and WG190-130. The 4657.172.045 interfaces seamlessly with the TRANSMISSION HOUSING and requires proper torque sequencing when paired with the HOUS.FRONT SECT. For WG200 applications, verify the rear casing alignment using the HOUSING REAR SECTION as a reference point.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201183 | HOUS.FRONT SECT | Front section housing input shaft bearing |
| 4657201184 | HOUSING REAR PART | Rear section supporting output shaft |
| 4657298111 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 fastener for housing bolts |
| 4681301015 | FIXING PLATE | Retainer for oil filter assembly |
| 4681301016 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4681301017 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M12 bolt for rear housing attachment |
Frequently Asked Questions
Q: How do I know if my ZF WG190 needs the 4657.172.045 replaced?
A: If you observe oil weeping from the seam between the HOUS.FRONT SECT and the main casing, or if the transmission exhibits a rhythmic clunk during low-speed operation, the 4657.172.045 likely requires immediate replacement.
Q: Can I reuse the old bolts when installing this part?
A: No. ZF recommends always using new CAP SCREW fasteners (part 0636100801) to ensure proper clamp load and prevent stress fractures in the housing.
Q: Is the 4657.172.045 interchangeable between WG190 and WG200 transmissions?
A: While the bolt pattern is identical, the internal oil gallery routing differs. Always verify compatibility using the HOUSING REAR SECTION part number to confirm correct fitment for your specific model.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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