ATD Tools High Side Manual Coupler — ATD-3657

The ATD Tools High Side Manual Coupler is a a/c service coupler engineered for automotive technicians, diesel professionals, and industrial service technicians who demand reliable performance in demanding shop and field environments. High-side R-134a manual coupler provides controlled high-pressure port access — positive-locking mechanism prevents accidental disconnection during active system pressure. ATD Tools ATD-3657 — ATD Tools High Side Manual Coupler. Professional-grade service tool. For R-134a systems. Compatible with domestic and import passenger cars, light trucks, commercial vehicles, agricultural equipment, and heavy equipment for mobile a/c — service port coupler. For use with R-134a systems. ATD Tools designs professional-grade service equipment for technicians who demand reliable performance under daily shop and field conditions. Ships fast nationwide. Order today. Compare Similar Products The ATD-3657 is a specialty item. Browse all A/C Charging Equipment at Sinclair Auto Parts.