USA Standard Gear 71512 ZF S542 Manual Transmission Reverse Synchro Ring Blocker

The USA Standard Gear 71512 is a precision-manufactured reverse synchronizer blocker ring designed specifically for ZF S542 manual transmissions. This critical transmission component ensures smooth gear engagement by matching the speed of the reverse gear to the output shaft before the gear teeth mesh.

Key Features:

• Direct replacement for ZF S542 manual transmission applications
• Precision-machined brass construction for optimal friction characteristics
• Factory-spec taper angle for proper synchronization
• Prevents gear clash during reverse engagement
• OEM-quality component manufactured to strict tolerances

Synchronizer blocker rings are wear items that should be inspected and replaced during transmission rebuilds or when experiencing difficult or grinding reverse gear engagement. USA Standard Gear manufactures this component to meet or exceed original equipment specifications, ensuring reliable performance and proper fitment in ZF S542 transmissions commonly found in medium and heavy-duty truck applications.