Overview
The ZF 4656.199.045 LOOSE PARTS set is a critical OEM genuine service kit designed specifically for the WG 171 series transmission. This assembly contains the essential loose hardware and small components required to secure and seal the main transmission housing during rebuilds or major repairs. The SKU 4656.199.045 typically includes fasteners, seals, and positioning elements that interface directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT. Without this genuine loose parts kit, proper torque specifications and alignment tolerances cannot be maintained, leading to premature wear of internal components.
Symptoms of Failure
When the components within the 4656.199.045 kit degrade or are missing, operators typically experience these specific failure modes:
- Transmission fluid seepage at housing joints: Worn or missing fasteners cause the TUBE seals to fail, resulting in visible oil drips after shutdown.
- Intermittent gear engagement hesitation: Loose hardware allows the SCREEN SHEET to shift, obstructing hydraulic flow and causing delayed shifts.
- Abnormal vibration during torque converter lockup: Degraded positioning pins create micro-movement between housing sections, transmitting noise through the driveline.
- Progressive oil loss from bell housing weep holes: Compromised fasteners in the loose parts set allow internal pressure to push fluid past gaskets.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.199.045 |
| Kit Contents | Fasteners, seals, positioning pins, retaining clips |
| Primary Material | Steel (fasteners), Nitrile rubber (seals) |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Compatible Housing | WG 171 Series |
Compatibility
This OEM genuine loose parts kit is engineered for the ZF WG 171 transmission series. Based on the part type and fastener configuration, it is also suitable for the WG 180 and WG 200 series when used with the corresponding HOUSING REAR PART. The 4656.199.045 kit is not recommended for WG 150 or older series without verifying bolt pattern dimensions. Always cross-reference your transmission serial number with the OEM parts catalog before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656301066 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4656201015 | SCREEN SHEET | Filter screen for hydraulic fluid intake |
| 4656301037 | TUBE | Fluid transfer conduit between sections |
| 0634313514 | O-RING | Static seal for housing joints |
| 0636100803 | CAP SCREW | Fastener for housing attachment |
| 4656301042 | HOUSING REAR PART | Rear section housing for output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0636100801 | CAP SCREW | Fastener for valve body mounting |
| 0636100160 | CAP SCREW | Fastener for oil pan attachment |
Frequently Asked Questions
Q: Can I reuse the existing fasteners instead of purchasing the 4656.199.045 kit?
A: ZF recommends against reusing fasteners from the loose parts set, as torque-to-yield bolts lose clamping force after initial installation. Using a fresh OEM kit ensures proper preload and prevents oil leaks at the housing interfaces.
Q: Does this kit include the O-ring for the tube connection?
A: The 4656.199.045 kit contains the primary seals and fasteners, but the specific O-ring for the tube port is part number 0634313514. We recommend ordering that separately if your tube seal shows signs of hardening.
Q: How do I verify that this kit fits my WG 171 transmission?
A: Check the casting number on your transmission housing. If it matches the WG 171 series and you are using the correct TRANSMISSION HOUSING, this kit is compatible. For hybrid builds using a WG 180 rear section, confirm bolt hole alignment with the HOUSING REAR PART specifications.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
