Overview
The ZF 4657.183.074 LOOSE PARTS assembly is a critical service kit designed specifically for the WG 210 series transmission. This OEM genuine part contains the necessary loose components—including seals, retaining rings, and small hardware—required to secure and align internal subassemblies within the transmission housing. Positioned between the main casing and the front section, this kit ensures proper clamping force and prevents axial movement of shafts during high-torque operation. The SKU 4657.183.074 is factory-matched to ZF’s exacting tolerances, eliminating the guesswork of sourcing individual fasteners. When paired with the 4657101042 TRANSMISSION HOUSING and the 4657201028 HOUS.FRONT SECT, this loose parts set guarantees a leak-free, vibration-resistant assembly.
Symptoms of Failure
- Transmission oil seepage at housing joints: Worn or missing loose parts can cause the 4657201013 HOUSING REAR PART to shift, leading to external fluid leaks that leave puddles under the vehicle.
- Intermittent gear engagement or slipping: When the 0631306792 CYLINDRICAL PIN loses retention due to degraded loose parts, internal alignment drifts, causing delayed shifts or unexpected neutral conditions.
- Abnormal rattle or knocking from the bell housing: Loose retaining hardware allows the front section to vibrate against the main case, producing metallic sounds that worsen under load.
- Difficulty maintaining hydraulic pressure: Compromised loose parts can unseat sealing surfaces, reducing clutch pack pressure and triggering fault codes in electronic controls.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.183.074 |
| Product Type | LOOSE PARTS Kit (OEM Genuine) |
| Material Composition | Steel alloy with zinc-plated hardware |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4657.183.074 |
| Thread Pitch (primary bolts) | M8 x 1.25 |
| Operating Temperature Range | -40°C to +120°C |
| Torque Specification | 25 Nm ± 3 Nm |
Compatibility
This loose parts kit is engineered for the ZF WG 210 series, but its design shares mounting geometry with earlier WG 180 and WG 200 models. It is also suitable for select WG 220 variants produced after 2015. The kit directly interfaces with the 4657101042 TRANSMISSION HOUSING and the 4657201028 HOUS.FRONT SECT, making it a drop-in replacement for any rebuild requiring fresh fasteners and alignment components. Always verify your transmission’s serial number against ZF’s parts catalog to confirm fitment, as the 4657201013 HOUSING REAR PART may vary in bolt pattern across production years.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101042 | TRANSMISSION HOUSING | Main casing that encloses gear sets and valve body |
| 4657201028 | HOUS.FRONT SECT | Front section that supports input shaft and pump |
| 4657201013 | HOUSING REAR PART | Rear housing that seals output flange area |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Retention plate for oil pump assembly |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | Bolt for valve body attachment |
| 4656301048 | OIL FEED.HOUSG. | Oil delivery tube housing for lubrication |
