Yaocom R12 to R134A Conversion Adapter Kit Gold & Silver — Brass/Aluminium Retrofit with Valve-Core Tools

Yaocom R12 to R134A Conversion Kit is a complete set of brass and aluminum retrofit adapters that let you convert R12 air-conditioning service ports to accept R134A quick-disconnect hoses safely and quickly.

This adapter kit supplies the fittings and simple tools needed to adapt older R12 vehicle or stationary AC service ports for use with R134A refrigerant service equipment. Designed as a retrofit solution, the set includes both 90° and straight adapters for high- and low-pressure sides, along with valve-core removal tools and protective dust caps. Components are made of brass and aluminum alloy for corrosion resistance and reliable sealing during service.

How do these adapters let me service an R12 system with R134A tools?

The adapters provide a mechanical interface between older R12-style service ports and modern R134A quick-disconnect hoses. They replace or convert the original connection so standard R134A charging and recovery hoses will fit without modifying your gauges or hoses.

• Includes 90° low- and high-side adapters and straight retrofit adapters for both ports.
• Accepts 1/4" female to 7/16"-20 UNF connections used by R134A equipment.
• Comes with dust caps to keep ports clean during storage or between services.

What materials and construction ensure leak resistance?

Critical sealing surfaces are machined from brass and aluminum alloy to resist corrosion and hold a tight seal under pressure. The fittings are heat-resistant and use proven thread standards to minimize leaks when properly installed and torqued.

• Brass body on most fittings for durability and corrosion resistance.
• Straight type adapter uses aluminum alloy to balance weight and strength.
• Threaded 7/16"-20 UNF connections match common service equipment standards.

Which sizes and parts are included and how do I use the valve-core tool?

The kit supplies the sizes you need for typical automotive and small HVAC service ports: low-side (blue cap) and high-side (red cap) adapters with specific length dimensions to fit most systems. Two valve-core removal tools are included so you can depress and remove the Schrader core without leaking refrigerant during adapter installation.

• Low-side: 1/4" (7/16"-20) x 13 mm with blue dust cap.
• High-side: 1/4" (7/16"-20) x 16 mm with red dust cap.
• Two valve-core tools let you safely pull or reinstall Schrader cores while servicing ports.

Will this kit work with my existing R134A hoses and gauges?

Yes — the retrofit kit is designed to accept standard R134A quick-disconnect hoses and common gauge fittings, so you can continue using your current service equipment after converting the port type. Always verify thread and connection compatibility before pressurizing the system.

• Compatible with R134A quick-disconnect hoses that use 7/16"-20 UNF fittings.
• Threaded female-to-male adapters match typical gauge manifold hoses.
• Use the included dust caps to protect converted ports between uses.

Who is this for: Technicians, DIY mechanics, and HVAC hobbyists who need a practical retrofit solution for servicing older R12-equipped systems with modern R134A charging tools. This kit is best for routine maintenance and service tasks where converting the service fittings avoids replacing the entire port assembly. It’s not a substitute for full system retrofitting or refrigerant conversion procedures that require compliance with local regulations; use it as a mechanical adapter during servicing with appropriate safety and environmental practices.