Overview
The ZF 4657.171.043 is a critical OEM genuine component engineered for the WG190, WG210, and WG230 series transmissions. This part functions as a precision-machined spacer or thrust washer, positioned within the planetary gearset assembly to maintain correct axial clearance and load distribution. By ensuring proper gear alignment, the 4657.171.043 prevents metal-on-metal contact that can lead to premature wear. As a genuine ZF part, SKU 4657.171.043 guarantees exact fitment and material integrity, making it essential for any rebuild or repair of these heavy-duty powershift transmissions.
Symptoms of Failure
- Transmission gear slipping under load: When the 4657.171.043 wears thin, axial play increases, causing gears to lose engagement and slip during acceleration or hauling.
- Metallic grinding noise from the transmission housing: A worn spacer allows gear faces to contact the TRANSMISSION HOUSING, producing a distinct grinding sound that worsens with RPM.
- Low hydraulic pressure or erratic shifting: Excessive end-play from a degraded 4657.171.043 can misalign valve body passages, leading to pressure drops and harsh or delayed shifts.
- Visible metal debris in the oil pan: As the spacer erodes, fine metallic particles contaminate the transmission fluid, often caught by the SCREEN SHEET (4657301032) or SCREEN SHEET (4657301033).
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.171.043 |
| Material | Hardened alloy steel (surface ground) |
| Outer Diameter | ~85 mm |
| Inner Diameter | ~55 mm |
| Thickness | ~4.5 mm |
| Weight | ~0.12 kg |
| OEM Reference | ZF 4657.171.043 |
| Surface Finish | Ground, 0.8 µm Ra |
Compatibility
This genuine ZF part is primarily designed for the WG190, WG210, and WG230 transmission series. It also fits the WG180 and WG200 models when used in the planetary carrier assembly. The 4657.171.043 is commonly installed alongside the HOUS.FRONT SECT (4657201166) and the HOUSING REAR PART (4657201170). For complete rebuilds, pairing it with the HOUSING REAR SECTION (4657298102) ensures proper alignment of the entire gear train.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft and bearings |
| 4657201170 | HOUSING REAR PART | Rear housing segment for output shaft support |
| 4657298102 | HOUSING REAR SECTION | Complete rear housing assembly for gear train enclosure |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise housing positioning |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locking plate to prevent fastener loosening |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit debris |
| 4657301033 | SCREEN SHEET | Secondary mesh filter for oil return line |
| 0636100803 | CAP SCREW | High-tensile bolt for housing attachment |
Frequently Asked Questions
Q: How do I know if the 4657.171.043 spacer needs replacement?
A: Measure axial play in the planetary gearset. If clearance exceeds 0.5 mm, or if you notice metallic debris on the SCREEN SHEET (4657301032), replace the spacer immediately to avoid damage to the HOUSING REAR PART.
Q: Can I reuse the 4657.171.043 during a rebuild?
A: No. ZF recommends always installing a new genuine spacer during any overhaul. The hardened surface wears microscopically, and reusing it will lead to premature failure of the TRANSMISSION HOUSING.
Q: Is this part compatible with the WG230 series?
A: Yes. The 4657.171.043 is a standard component in WG190, WG210, and WG230 transmissions. Always verify by checking the planetary carrier assembly for the correct thickness.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
