ZF 4699.303.243 BUSH | OEM Genuine Part

Overview

The ZF 4699.303.243 BUSH is a precision-engineered wear component designed to absorb radial loads and maintain proper shaft alignment within the clutch drum or planetary carrier assembly of heavy-duty ZF transmissions. As an OEM genuine part, it ensures minimal clearance and consistent oil film distribution under high-torque conditions. This bushing, identified by SKU 4699.303.243, is critical for preventing metal-on-metal contact between rotating and stationary elements. It is frequently replaced alongside the 4699101159 HOUSING and the 4699301254 HOUSING during a full transmission overhaul to restore factory tolerances.

Symptoms of Failure

• Low hydraulic pressure and gear slipping: A worn bushing increases internal leakage, causing the clutch packs to lose clamping force and slip under load.
• Metallic debris in the oil pan: Flaking or scoring of the bushing surface introduces bronze or steel particles into the lubrication system, contaminating valves and bearings.
• Abnormal whining or knocking noise: Excessive radial play allows the shaft to vibrate against the housing, producing a distinct low-frequency rumble during acceleration or deceleration.
• Oil leaks from the bell housing area: Worn bushings can misalign the input shaft, damaging the front seal and causing fluid to weep past the 4699298049 HOUSING KIT interface.

Technical Specifications

Compatibility

This bushing is dimensionally and metallurgically matched for use in the following ZF transmission families: WG180, WG200, WG210, and 6WG310. It is typically installed in the rear planetary carrier support or the PTO drive hub. For complete assembly integrity, always pair this bushing with a new 4699309123 HOUSING COVER to prevent contamination ingress.

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