USA Standard Gear ZMZFS6-80 Manual Transmission 1st & 2nd Synchronizer Hub & Sleeve for ZF S6-650 6-Speed

The USA Standard Gear ZMZFS6-80 is a precision-engineered 1st and 2nd gear synchronizer hub and sleeve assembly designed for ZF S6-650 6-speed manual transmissions. This critical transmission component is responsible for smooth gear engagement between first and second gears, ensuring seamless shifting performance in demanding applications.

Key Features:

• Direct replacement synchronizer hub and sleeve assembly for 1st and 2nd gears
• Designed specifically for ZF S6-650 6-speed manual transmissions
• Precision-manufactured to OEM specifications for reliable performance
• Essential component for transmission rebuilds and repairs
• Manufactured by USA Standard Gear, a trusted name in drivetrain components

This synchronizer assembly is commonly found in 1998-2002 Ford F-250, F-350, and F-450 trucks equipped with the 7.3L Power Stroke diesel engine, as well as GM heavy-duty truck applications. The hub and sleeve work together to match the rotational speeds of gears during shifting, preventing grinding and ensuring smooth gear changes. When rebuilding or repairing a ZF S6-650 transmission, replacing worn synchronizer components is essential for restoring proper shift quality and extending transmission life.

USA Standard Gear manufactures a complete line of high-quality transmission and differential components, providing reliable replacement parts for professional mechanics and DIY enthusiasts alike.