Replacement Caster Vial

The Longacre Replacement Caster Vial (MPN 52-78242) is a precision bubble level component designed for alignment and suspension geometry measurement on both street and race vehicles. This replacement vial is essential for mechanics and enthusiasts who rely on accurate caster readings when setting up front-end geometry, diagnosing suspension issues, or performing baseline alignment checks. A fresh, accurate caster vial ensures your alignment measurements reflect true vehicle dynamics.

Manufactured by Longacre, a trusted name in alignment and suspension measurement tools, this vial is designed for durability and reliability in shop and track environments. The compact design allows seamless integration into existing Longacre alignment setups, and it is built to withstand the vibration and temperature fluctuations common in these settings. Caster vials are calibrated to detect minute angular changes in wheel geometry, making this replacement component critical when original vials become clouded, damaged, or lose bubble sensitivity over time.

This replacement vial is ideal for professional technicians, alignment shops, and serious DIY builders who maintain their own Longacre alignment tools. It's compatible with Longacre's standard caster and camber gauge systems, making it a straightforward swap that restores measurement accuracy. By ensuring precise caster readings, users can enhance vehicle performance and handling characteristics.