Overview
The ZF 4657.199.067 LOOSE PARTS kit is a critical service component engineered specifically for the WG 210 series transmission. This genuine OEM assembly contains the precise fasteners, seals, and positioning elements required to secure the main transmission housing sections during overhaul or repair. The SKU 4657.199.067 is designed to interface directly with the 4657101082: TRANSMISSION HOUSING, ensuring that all internal gear sets and hydraulic circuits remain properly aligned under load. Without this loose parts set, the structural integrity of the WG210 gearbox is compromised, leading to misalignment and premature wear.
Symptoms of Failure
- External oil seepage at housing joints: When the 4657.199.067 fasteners lose torque or the included seals degrade, transmission fluid will weep from the mating surfaces between the 4657201166: HOUS.FRONT SECT and the main case.
- Intermittent gear slipping under load: Loose housing sections allow the shaft centers to shift, causing the clutch packs to lose clamping force. This manifests as a momentary loss of drive power during uphill climbs or heavy hauling.
- Abnormal vibration from the bell housing area: A worn loose parts kit fails to dampen resonance between the 4657201170: HOUSING REAR PART and the rear bearing support, creating a low-frequency rumble that intensifies with road speed.
- Difficulty engaging reverse gear: Misalignment caused by degraded loose parts can prevent the reverse piston from fully seating, resulting in a grinding noise or delayed engagement.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.199.067 |
| Material Composition | Case-hardened steel fasteners with nitrile rubber seals |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| Thread Pitch (primary bolts) | M10 x 1.5 |
| Torque Specification | 45 Nm ± 5 Nm (dry) |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF Friedrichshafen AG |
| Compatible Housing | 4657298102: HOUSING REAR SECTION |
Compatibility
This loose parts kit is primarily validated for the ZF WG 210 series, but it also shares mounting geometry with the WG180 and WG200 transmissions due to identical housing bolt patterns. The kit is not recommended for WG120 or WG150 models without first verifying the 4657101082: TRANSMISSION HOUSING flange thickness. For mixed-series rebuilds, always cross-reference the rear housing part number against the 4657298102: HOUSING REAR SECTION to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0636100801 | CAP SCREW | Secures front housing to main case |
| 4656301148 | FIXING PLATE | Locks bearing races in position |
| 4657301032 | SCREEN SHEET | Filters debris from lube oil circuit |
| 4657301033 | SCREEN SHEET | Secondary filtration for torque converter |
| 0636100803 | CAP SCREW | Fastens rear housing section |
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