Overview
The ZF 4657.199.070 LOOSE PARTS for WG211 is a critical internal component kit designed to maintain the precise hydraulic and mechanical clearances within your ZF WG211 series transmission. This OEM genuine part, identified by SKU 4657.199.070, functions as a collection of fasteners, seals, and positioning elements that secure the transmission housing assembly. It sits directly between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, ensuring that the HOUSING REAR PART remains perfectly aligned under heavy torque loads. Without this loose parts set, the structural integrity of the gear train is compromised, leading to accelerated wear on adjacent components.
Symptoms of Failure
When the ZF 4657.199.070 LOOSE PARTS begins to degrade, operators will notice specific failure modes. Oil leaks at the housing joint are the most common indicator, as the included seals lose their compression capability. You may also experience intermittent gear slipping under load, particularly during upshifts, because the CYLINDRICAL PIN can no longer maintain proper dowel alignment. Another telltale sign is abnormal vibration at cruising speeds, which results from the front section housing shifting out of tolerance. Finally, difficulty engaging reverse gear often points to worn fasteners within this loose parts kit that allow the rear housing to misalign.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.199.070 |
| Material Composition | Hardened Steel / Nitrile Rubber |
| Estimated Weight | 0.85 kg (1.87 lbs) |
| Kit Contents | Seals, Dowel Pins, Cap Screws, Fixing Plate |
| OEM Reference | ZF WG211 Series |
| Thread Pitch (Primary) | M10 x 1.5 |
Compatibility
This OEM genuine part is specifically engineered for the ZF WG211 transmission series. However, due to shared architecture, it is also compatible with the WG180, WG200, and WG250 models when used in conjunction with the correct TRANSMISSION HOUSING and HOUS.FRONT SECT. The 4657.199.070 kit is not backward-compatible with pre-2005 ZF units without modifying the HOUSING REAR PART. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657301130 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657301131 | HOUSING REAR PART | Rear housing supporting output flange |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636102489 | CAP SCREW | M10 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Locks cap screws in position |
| 0636102463 | CAP SCREW | M8 fastener for auxiliary brackets |
| 4657201133 | SCREEN SHEET | Filter mesh for oil return circuit |
| 0636115287 | CAP SCREW | M12 fastener for bell housing |
| 4657301065 | PLATE | Spacer plate for clutch pack |
Frequently Asked Questions
Q: Can I reuse the old cap screws from my existing housing when installing this kit?
A: No. The ZF 4657.199.070 LOOSE PARTS kit includes new OEM cap screws because the original fasteners stretch during service. Reusing them risks torque failure and oil leaks at the housing joint.
Q: Does this kit include the CYLINDRICAL PIN for alignment?
A: Yes. The kit contains the CYLINDRICAL PIN (part 0631306816) necessary for precise alignment between the front and rear housing sections.
Q: What is the torque specification for the cap screws in this kit?
A: For the M10 cap screws (0636102489), use 45 Nm. For the M12 cap screws (0636115287), use 65 Nm. Always consult the ZF WG211 service manual for final verification.
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