Overview
The ZF 4657.183.275 LOOSE PARTS for WG211 is a critical internal component kit designed to maintain precise gear alignment and secure fastening within the transmission assembly. This OEM genuine part, identified by SKU 4657.183.275, functions as a collection of essential hardware and spacers that stabilize the planetary gear sets and prevent axial movement during high-torque operation. Located in the central valve body and gear train area of the WG211 series, these loose parts ensure that all mating surfaces remain properly tensioned. When installed alongside the 4657101049: TRANSMISSION HOUSING, they create a sealed environment that withstands extreme hydraulic pressures.
Symptoms of Failure
- Intermittent gear slipping under load: Worn loose parts can cause the clutch packs to lose clamping force, resulting in sudden loss of drive during acceleration.
- Metallic rattling from the transmission bell housing: Loose fasteners or degraded spacers produce a distinct rattle at idle, especially when the transmission is hot.
- Hydraulic fluid seepage around the housing joints: Deteriorated sealing surfaces from loose components lead to slow oil leaks that worsen over time.
- Delayed engagement when shifting from Park to Drive: Internal play from worn parts prevents the valve body from achieving proper hydraulic pressure quickly.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.183.275 |
| Material Composition | Hardened steel alloy with zinc plating |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 85 mm x 40 mm x 25 mm |
| OEM Reference | ZF 4657.183.275 |
| Thread Pitch | M8 x 1.25 (primary fasteners) |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This loose parts kit is specifically engineered for the ZF WG211 series transmissions, but it also shares dimensional compatibility with several other ZF power shift models. It is directly interchangeable with the WG180 and WG200 series when used in conjunction with the 4657301130: HOUS.FRONT SECT and the 4657301131: HOUSING REAR PART. Additionally, it fits the WG150 and WG250 models where the internal gear train architecture matches the WG211 design. For proper installation, always pair this kit with the 0631306816: CYLINDRICAL PIN to ensure correct alignment of the housing sections.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657301130 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657301131 | HOUSING REAR PART | Rear section housing for output shaft bearing |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636102489 | CAP SCREW | M8 bolt for securing housing flanges |
| 4656301148 | FIXING PLATE | Locking plate for fastener retention |
| 0636102463 | CAP SCREW | M10 bolt for heavy-duty clamping |
| 4657201133 | SCREEN SHEET | Filter mesh for hydraulic fluid debris |
| 0636115287 | CAP SCREW | M12 bolt for final drive attachment |
| 4657301065 | PLATE | Spacer plate for clutch pack preload |
Frequently Asked Questions
Q: Can I reuse the existing bolts from my old loose parts kit?
A: No. The ZF 4657.183.275 kit includes new fasteners because original bolts stretch under torque and lose clamping force. Always replace all hardware to prevent future failure.
Q: Does this kit include the cylindrical pin for alignment?
A: No, the cylindrical pin is a separate component (part number 0631306816). You must order it separately to ensure proper alignment of the front and rear housing sections during reassembly.
Q: How do I verify if my WG211 transmission needs this kit?
A: Inspect the area around the housing joint for oil residue or loose fasteners. If you notice any of the failure symptoms listed above, particularly metallic rattling or gear slipping, this kit is likely required.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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