Overview
The ZF 4656.174.050 is a precision-engineered OEM genuine component designed specifically for the WG 160 series transmission. This part functions as a critical sealing and alignment element within the gearbox assembly, ensuring proper oil flow and pressure regulation between the main housing sections. The SKU 4656.174.050 is manufactured to ZF’s original specifications, guaranteeing exact fitment and long service life in heavy-duty commercial vehicle applications. It sits between the main casing and the rear housing section, acting as a barrier against contamination and fluid loss.
Symptoms of Failure
When the ZF 4656.174.050 begins to wear out, operators may notice oil seepage around the transmission bell housing—a common long-tail search query for fleet managers. Another frequent symptom is intermittent gear engagement hesitation, particularly under load, as internal pressure drops. You might also detect abnormal whining noises from the rear of the transmission during deceleration, indicating misalignment. Finally, contaminated transmission fluid with metallic particles often signals that this part has degraded and requires immediate replacement.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4656.174.050 |
| Material | High-grade aluminum alloy with nitrile rubber seal |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 174 mm |
| Inner Diameter | 50 mm |
| Height | 28 mm |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF WG 160 Series |
Compatibility
This genuine ZF part is primarily engineered for the WG 160 transmission series, but it also fits select models in the WG 180 and WG 200 families when used in conjunction with the correct TRANSMISSION HOUSING (4656101056). For proper installation, it must be paired with the HOUS.FRONT SECT (4656201075) and the HOUSING REAR PART (4656201077). In some configurations, the HOUSING REAR SECTION (4656298049) is also required for complete sealing integrity. Always verify your transmission model number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101056 | TRANSMISSION HOUSING | Main casing that encloses gear sets |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201077 | HOUSING REAR PART | Rear housing component for output support |
| 4656298049 | HOUSING REAR SECTION | Additional rear section for extended models |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing positioning |
| 4656301148 | FIXING PLATE | Secures internal components in place |
| 0636100817 | CAP SCREW | Fastener for housing attachment |
| 4656301016 | SCREEN SHEET | Filter mesh for oil debris protection |
| 4656301017 | SCREEN SHEET | Secondary filter for fine particle capture |
| 0636100803 | CAP SCREW | Bolt for securing screen sheets |
Frequently Asked Questions
Q: Can the 4656.174.050 be installed without replacing the housing gaskets?
A: It is strongly recommended to replace all associated seals and gaskets simultaneously. Using the HOUS.FRONT SECT (4656201075) and HOUSING REAR PART (4656201077) together ensures a leak-free assembly.
Q: How do I know if this part fits my WG 160 transmission?
A: Check the transmission serial number plate. The 4656.174.050 is designed for WG 160 models manufactured after 2012. For earlier versions, verify compatibility with the TRANSMISSION HOUSING (4656101056).
Q: What is the typical lifespan of this OEM part?
A: Under normal operating conditions, this genuine ZF component lasts 300,000 to 500,000 km. Premature failure often indicates misalignment of the HOUSING REAR SECTION (4656298049).
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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