ZF 4143.315.059 RING GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4143.315.059 RING GEAR is a critical internal component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the final drive gear within the planetary gearset, transferring torque from the sun gear to the output shaft while maintaining precise rotational alignment. The SKU 4143.315.059 is machined from case-hardened alloy steel to withstand high cyclic loads and thermal stress during heavy-duty industrial operations. When installed correctly, this ring gear ensures smooth power delivery and reduces vibration in the drivetrain assembly. It integrates directly with the 4143101016 HOUSING and the 4143301039 HOUSING to form a sealed gear chamber, while the 0501318136 GASKET prevents fluid migration between mating surfaces. Secure fastening is achieved using the 0636101084 CAP SCREW, which must be torqued to factory specifications during reassembly.

Symptoms of Failure

• Whining or growling noise during gear engagement: Worn ring gear teeth produce a distinct metallic sound that intensifies under load, often indicating advanced pitting or spalling on the gear face.
• Intermittent gear slipping under heavy torque: As the ring gear loses tooth profile integrity, the transmission may momentarily lose power transfer, causing hesitation or surging during acceleration.
• Metallic debris in transmission fluid: Flakes or fine metal particles found during oil changes signal that the ring gear surface is deteriorating, which can clog the valve body and damage the 4143201019 VALVE INSERT.
• Oil seepage near the output flange: A cracked or warped ring gear can distort the housing seal surface, leading to fluid leaks that compromise lubrication and cooling.

Technical Specifications

Compatibility

This ring gear is specifically designed for ZF WG100, WG130, and WG131 transmissions found in agricultural tractors, construction loaders, and industrial material handlers. It also fits select HL 100 Series and HL 270 Series transfer cases where the planetary gearset shares identical tooth geometry. The part is not compatible with WG180 or WG200 models due to differing spline counts and housing dimensions. Always verify the transmission serial number against the ZF parts catalog before ordering. For complete assembly, pair this gear with the 0636302014 SCREW PLUG and 0634801057 SEALING RING to prevent contamination.

Related Components