ZF 4656.183.304 LOOSE PARTS for WG171 | OEM Genuine Part

Overview

This OEM genuine ZF 4656.183.304 LOOSE PARTS kit is an essential service component for the WG 171 series transmission. Designed to restore the precise fit and sealing integrity of the valve body and hydraulic control assembly, this kit contains the specific loose hardware—including retaining clips, spacers, and small fasteners—that secure internal components against vibration and pressure fluctuations. The SKU 4656.183.304 is factory-sourced to match original tolerances, ensuring that the shift quality and hydraulic timing remain within ZF’s strict specifications. When rebuilding a WG171, this kit is typically installed alongside the 4656101028: TRANSMISSION HOUSING to guarantee that all loose hardware meets the latest revision standards.

Symptoms of Failure

• Erratic shift timing and delayed engagement: Worn or missing loose parts from the 4656.183.304 kit can cause valve body components to shift out of alignment, leading to harsh or delayed gear changes.
• Internal hydraulic fluid seepage: Degraded spacers or clips allow pressurized ATF to bypass seals, resulting in visible oil residue around the transmission housing seams.
• Intermittent loss of drive in forward gears: When the loose hardware fails to hold the control pistons in place, the transmission may momentarily slip or fail to engage under load.
• Unusual rattling or metallic noise from the valve body area: Loose retaining elements can vibrate against the 4656301066: HOUS.FRONT SECT, creating audible noise that worsens with temperature changes.

Technical Specifications

Compatibility

While the 4656.183.304 LOOSE PARTS kit is specifically engineered for the WG 171 series, its hardware dimensions and load ratings also apply to the following ZF transmission models: WG 180, WG 200, and WG 150. These models share a common valve body architecture and hydraulic circuit layout. For installations involving the 4656301042: HOUSING REAR PART, always verify that the loose parts kit matches the production date of the transmission to ensure correct clip tension and spacer thickness.

Related Components

Frequently Asked Questions

Q: Can the 4656.183.304 LOOSE PARTS kit be reused after disassembly?
No. ZF specifies that all loose parts in this kit—including clips and spacers—are single-use components. Reusing them can lead to reduced clamping force and eventual hydraulic leakage.

Q: Does this kit include the O-rings and cap screws listed in the related components table?
No. The 4656.183.304 kit contains only the loose hardware (clips, spacers, and small fasteners). Separate O-rings like 0634313514 and cap screws such as 0636100803 must be ordered individually for a complete rebuild.

Q: Will this part work with a WG171 transmission that has been upgraded to a WG180 valve body?
Yes, the 4656.183.304 kit is dimensionally identical for both WG171 and WG180 valve body assemblies. However, always cross-reference the production date of your 4656301066: HOUS.FRONT SECT to confirm clip compatibility.