Mastercool 91290 A/C Valve Core Remover R-12 Installer Tool - Mastercool

The Mastercool 91290 A/C Valve Core Remover R-12 Installer Tool is built for technicians who regularly service older R-12 automotive and HVAC systems. Designed to remove and install valve cores under pressure, it helps you swap leaking or damaged cores without evacuating the entire system, saving both time and refrigerant.

Key Features

• R-12 specific design – Precisely machined to work with R-12 A/C valve cores commonly found on legacy automotive and industrial systems.
• Service without evacuation – Allows valve core replacement without discharging the system, reducing refrigerant loss and cutting downtime.
• Compact, lightweight body – At just 0.07 lbs and 4.55" long, it’s easy to handle in tight engine bays and crowded equipment compartments.
• Durable construction – Built to withstand regular shop use and repeated connection cycles on service ports.
• Controlled, precise operation – Helps prevent port and core damage during removal/installation, supporting leak-free system performance.
• Professional-grade tool – Suitable for use in automotive repair shops, fleet maintenance, and HVAC/R field service.

Applications

Ideal for technicians working on older vehicles and equipment still running R-12 refrigerant, including classic cars, light trucks, agricultural machinery, and stationary HVAC units. Use it for routine maintenance, leak repairs, and valve core replacement on R-12 high and low side service ports where maintaining system charge is critical.

Specifications

• Manufacturer: Mastercool
• Model Number: 91290
• Product Name: Mastercool 91290 A/C Valve Core Remover R-12 Installer Tool
• Weight: 0.07 lbs
• Dimensions: 4.55 x 2.6 x 1.25 in