ZF 4651.199.032 LOOSE PARTS for WG100 | OEM Genuine Part

Overview

The ZF 4651.199.032 LOOSE PARTS kit is a critical service assembly designed specifically for the WG 100 series transmission. This OEM genuine part contains the essential loose hardware required to secure and seal internal components within the planetary gear set and clutch housing area. The SKU 4651.199.032 functions as a consolidation of fasteners, retaining elements, and small fittings that prevent axial movement of shafts and gears during high-torque operation. Without this specific loose parts kit, the transmission’s internal clearances cannot be maintained, leading to premature wear of adjacent assemblies such as the 4651101009: TRANSMISSION HOUSING and the 4651301025: HOUSING.

Symptoms of Failure

• Intermittent gear slipping under load: When the loose parts in this kit degrade, fasteners can loosen, causing clutch packs to lose clamping force. This results in the transmission slipping out of gear during acceleration, particularly in WG100 units operating in heavy-duty applications.
• External oil seepage from housing joints: A worn or missing component from the 4651.199.032 assembly often leads to compromised sealing at the interface between the 0634303928: O-RING and the housing. Technicians report oil weeping from the bell housing area when these loose parts fail.
• Metallic rattling from the transmission pan: Loose hardware within the kit can break free and circulate through the oil system. This produces a distinct rattling noise and can damage the 4651301031: HOUSING if not addressed promptly.
• Erratic shift timing: As retaining elements lose their tension, valve body pressure regulation becomes inconsistent. Operators may notice delayed or harsh shifts, especially in WG200 and WG180 variants.

Technical Specifications

Compatibility

This OEM genuine part is engineered for the ZF WG 100 series transmission family. It is directly compatible with the WG100, WG101, and WG102 models. Based on the shared planetary gear architecture, the 4651.199.032 kit also fits the WG180 and WG200 series when used with the appropriate 4651301025: HOUSING and 4651301031: HOUSING. For WG250 and WG300 applications, verify housing bore dimensions before installation. The kit is not backward-compatible with pre-1990 ZF WG models without adapter plates.

Related Components