ZF 4656.183.345 LOOSE PARTS for WG171 | OEM Genuine Part

Overview

The ZF 4656.183.345 LOOSE PARTS for WG171 is a critical service kit designed to restore the internal integrity of your ZF WG 171 series transmission. This OEM genuine part, identified by SKU 4656.183.345, contains the essential loose hardware and small components that secure and seal the main assemblies within the gearbox. It sits directly within the transmission housing, working in conjunction with the 4656101028: TRANSMISSION HOUSING and the 4656301066: HOUS.FRONT SECT to ensure proper clamping force and alignment of internal components. Without this kit, even a perfectly machined housing cannot guarantee leak-free operation or reliable gear engagement.

Symptoms of Failure

When the components within the 4656.183.345 kit begin to fail, operators will notice distinct performance degradation. Look for these specific failure symptoms:

• Transmission fluid seepage at housing joints: Worn or missing fasteners from this kit cause the 4656301037: TUBE and housing interfaces to lose seal integrity, leading to visible oil drips.
• Intermittent gear slipping under load: Loose hardware allows the 4656201015: SCREEN SHEET to shift, obstructing oil flow and causing clutch pack starvation.
• Abnormal vibration or rattling from the bell housing: Degraded retaining pins and cap screws result in micro-movement of the front section, creating audible noise during gear changes.
• Hard shifting or delayed engagement: Insufficient clamping pressure from worn fasteners alters the preload on valve body passages, leading to sluggish hydraulic response.

Technical Specifications

Compatibility

This OEM genuine part is specifically engineered for the ZF WG 171 Series transmission. While the kit is optimized for the WG171, its loose components are also compatible with the ZF WG180 and WG200 series due to shared housing bolt patterns and seal geometries. Always verify your transmission model before installation. For full assembly, pair this kit with the 4656301042: HOUSING REAR PART and appropriate sealing elements like the 0634313514: O-RING.

Related Components

Frequently Asked Questions

Q: Can I use the 4656.183.345 kit on a ZF WG180 transmission?
A: Yes, the loose hardware in this kit is dimensionally identical to the fasteners used in the WG180 and WG200 series. However, we recommend cross-referencing your specific housing part numbers to confirm compatibility with the HOUS.FRONT SECT.

Q: What is the typical service interval for replacing these loose parts?
A: This kit should be replaced whenever the transmission housing is disassembled for major repair or overhaul. Reusing old cap screws and pins can lead to the failure symptoms described above, particularly oil seepage and gear slipping.

Q: Does this kit include the O-rings and cap screws listed in the table?
A: The 4656.183.345 kit contains the primary loose hardware for the WG171 assembly. For additional sealing components like the 0634313514: O-RING or specific 0636100803: CAP SCREW, please order those separately to ensure a complete rebuild.