Overview
The ZF 4657.199.039 LOOSE PARTS kit is a critical service package designed specifically for the WG 210 series transmission. This genuine OEM assembly contains the essential fasteners, seals, and positioning elements required to secure the main structural components of the gearbox. Positioned at the interface between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, this kit ensures proper alignment and clamping force during rebuilds or major repairs. The SKU 4657.199.039 is a factory-sealed set that eliminates the guesswork of sourcing individual bolts and pins, guaranteeing that every fastener meets ZF’s torque and metallurgy specifications for the WG210 platform.
Symptoms of Failure
- Transmission housing oil seepage at the front section joint: When the loose parts in this kit fatigue or corrode, the seal between the main housing and the HOUSING REAR PART can degrade, leading to visible fluid trails around the bell housing area.
- Audible clicking or rattling during gear engagement: Worn CYLINDRICAL PIN components within this set can allow micro-movement between casings, producing a distinct metallic chatter under load.
- Intermittent loss of hydraulic pressure: A compromised fastener set can cause the housing halves to separate slightly under torque, resulting in erratic shift quality and delayed engagement.
- Vibration at highway speeds: Loose structural fasteners from this kit can allow the transmission assembly to flex, transmitting harmonic vibrations through the driveline.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.199.039 |
| Kit Contents | Fasteners, pins, seals, and positioning hardware |
| Material Composition | High-tensile steel with zinc-nickel plating |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4657.199.039 |
| Thread Specifications | M8 x 1.25 and M10 x 1.5 (various lengths) |
| Torque Rating | 25-45 Nm (dependent on fastener location) |
Compatibility
This LOOSE PARTS kit is engineered primarily for the WG 210 Series transmission. Based on the part type and fastener geometry, it is also compatible with the WG 180 and WG 200 series models that share the same housing bolt pattern and pin locations. The kit is not recommended for the older WG 150 series due to differing thread pitch standards. Always cross-reference your transmission serial number with the ZF parts catalog to confirm fitment for your specific unit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gearset |
| 4657201028 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201013 | HOUSING REAR PART | Rear casing for output assembly |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M8 fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retaining plate for bearing preload |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh filter for sump |
| 0636100803 | CAP SCREW | M10 fastener for rear housing |
| 4681301040 | OIL FEED.HOUSG. | Oil supply manifold for clutch packs |
