ZF 1232.304.052 SHIM for WG150 | OEM Genuine Part

Overview

The ZF 1232.304.052 SHIM is a precision-engineered adjustment component designed for the WG150 series transmission. This OEM genuine shim functions as a critical spacer within the planetary gearset assembly, ensuring correct axial clearance and load distribution between rotating elements. By maintaining precise tolerances, the 1232.304.052 SHIM prevents metal-on-metal contact that can lead to premature wear. This part is typically installed during transmission rebuilds or when replacing adjacent components like the TRANSMISSION HOUSING or the TRANSMISSION HOUSING. The SKU 1232.304.052 is laser-etched for traceability and meets ZF’s original equipment specifications.

Symptoms of Failure

• Excessive axial play in the output shaft — A worn or incorrectly sized shim allows the shaft to move longitudinally, causing clunking noises during acceleration or deceleration.
• Intermittent gear slipping under load — When the shim loses thickness, gear engagement depth decreases, leading to momentary power loss when climbing grades or hauling heavy loads.
• Metallic debris in transmission fluid — Abrasion from insufficient clearance generates fine steel particles visible during oil changes, often accompanied by a burnt smell.
• Vibration at highway speeds — Misaligned planetary components due to shim failure create harmonic vibrations felt through the chassis between 45-65 mph.

Technical Specifications

Compatibility

This shim is engineered for the ZF WG150 series, but it also fits select variants of the WG180 and WG200 transmissions when used in the planetary carrier stack. Always verify clearance requirements before installation. The 1232.304.052 SHIM is commonly replaced alongside the TYPE PLATE for identification updates and the GROOVED STUD for secure fastening. For WG150 rebuilds, pairing this shim with a new SCREEN SHEET ensures optimal filtration and debris protection.

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