Overview
The ZF 4657.199.013 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 210 Series transmission. This genuine OEM part consolidates essential small components—including seals, retainers, and positioning elements—that are necessary for maintaining the structural integrity of the transmission’s internal assembly. Located within the main gear train housing, this kit ensures that all loose hardware remains secured under high-torque conditions. The SKU 4657.199.013 is frequently ordered alongside the 4657101033: TRANSMISSION HOUSING and the 4657201027: HOUS.FRONT SECT to complete a full overhaul of the WG210 unit.
Symptoms of Failure
- Oil leaks around the front housing interface: When the loose parts kit degrades, seals fail, causing transmission fluid to weep from the joint between the 4657201012: HOUSING REAR PART and the main casing.
- Intermittent gear slippage under load: Worn retaining pins or clips within the kit allow shafts to shift slightly, leading to erratic engagement in higher gears.
- Metallic rattling from the bell housing area: Loose fasteners or missing spacers create a distinct chatter during idle, often misdiagnosed as bearing noise.
- Difficulty engaging reverse gear: A compromised 0631306792: CYLINDRICAL PIN within the kit prevents proper alignment of the reverse idler gear.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4657.199.013 |
| Material Composition | Hardened steel retainers with nitrile rubber seals |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 30 mm |
| OEM Reference | ZF Friedrichshafen AG |
| Torque Specification | 25 Nm for included cap screws |
Compatibility
This genuine loose parts kit is engineered primarily for the WG 210 Series transmission, but it also fits the WG180 and WG200 models due to shared housing architecture. It is compatible with both early and late production runs of the WG210, provided the 4657101033: TRANSMISSION HOUSING and 4657201027: HOUS.FRONT SECT are original ZF units. Always verify the 0631306792: CYLINDRICAL PIN is included in your kit before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201012 | HOUSING REAR PART | Rear housing section for output shaft support |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for gear cluster positioning |
| 0636100801 | CAP SCREW | M10 fastener for housing retention |
| 4656301148 | FIXING PLATE | Locks bearing races in place |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil sump |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for pump intake |
| 0636100803 | CAP SCREW | M8 fastener for valve body mounting |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil delivery channel housing |
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