Overview
The ZF 4657.185.082 ACCESSORIES for WG190 is a critical OEM genuine component designed to support the internal sealing and structural integrity of the WG 190 Series transmission. This accessory kit typically includes essential mounting hardware, seals, and alignment elements that ensure the transmission’s housing sections remain securely fastened under high torque and thermal cycling conditions. Positioned between the main casing and the rear sections, this part prevents fluid migration and maintains gear alignment. The SKU 4657.185.082 is engineered to exact ZF tolerances, making it a direct replacement for worn factory-installed accessories. For optimal assembly, this component is often installed alongside the 4657101082: TRANSMISSION HOUSING, which provides the primary structural foundation for the gear train.
Symptoms of Failure
- External oil seepage near the rear bell housing: When the 4657.185.082 accessories degrade, you may notice slow drips or wet spots around the WG190’s rear joint, indicating compromised sealing between the 4657201166: HOUS.FRONT SECT and the main case.
- Intermittent gear engagement hesitation: Worn accessories can allow micro-movement of the 4657201170: HOUSING REAR PART, leading to slight misalignment that causes delayed or rough shifting under load.
- Unusual vibration during torque converter lockup: If the accessory hardware loosens, the 4657298102: HOUSING REAR SECTION may shift, producing low-frequency vibrations that worsen at highway speeds.
- Increased transmission fluid consumption: A failing accessory set often leads to internal leaks that bypass the oil pump, requiring frequent top-offs without visible external drips.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.185.082 |
| Material Composition | Steel alloy with zinc-nickel plating |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| Overall Dimensions | 120 mm x 80 mm x 25 mm |
| Thread Pitch | M8 x 1.25 (mounting points) |
| Operating Temperature Range | -40°C to +150°C |
| OEM Reference | ZF 4657.185.082 |
Compatibility
This accessory kit is specifically validated for the ZF WG 190 Series, but it also fits select models in the WG180 and WG200 families due to shared housing bolt patterns. It is compatible with transmissions built between 2005 and 2020 that utilize the same rear-section interface. For applications requiring the 0631306816: CYLINDRICAL PIN or 0636100801: CAP SCREW, verify that your housing variant uses the 4657.185.082 accessory set. This part is not interchangeable with the older WG150 series without additional adapter hardware.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing for output bearing support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO interface |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing registration |
| 0636100801 | CAP SCREW | M8 fastener for housing attachment |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M10 fastener for heavy-duty mounting |
