Mastercool 81490 R134a Valve Core Remover & Installer – Service Valve Cores Under Pressure – Compact Tool for Automotive A/C Systems with Internal Shutoff

Service R134a Valve Cores Without Discharging the System The Mastercool 81490 Valve Core Remover & Installer is a compact tool that allows technicians to replace R134a valve cores while the system remains fully pressurized. With built-in shutoff functionality and both 13mm (low side) and 16mm (high side) connectors, it offers quick and efficient access to standard R134a ports. Know Before You Buy This tool is designed for systems using standard R134a valve cores. It may not be compatible with certain Ford, GM, or Chrysler vehicles that use oversized or non-standard cores. Please verify your system’s valve core type before purchasing. Need Broader Compatibility? Mastercool offers additional tools to cover other valve core types: 58490 Universal Kit – Works with Standard, GM Large Bore, JRA, and Eaton cores 58560 Eaton Kit – Designed for Eaton-style cores (common on GM/Chrysler) 58531 Kit – Covers Standard and JRA valve cores (common in Asian/European vehicles) What's Included: Valve core remover/installer with internal shutoff 13mm (low side) R134a service port connector 16mm (high side) R134a service port connector Hardened steel shafts for standard valve cores