Mastercool’s 1/4” FL to R1234yf Conversion Kit is specially designed for vehicles that have minimal access to service ports. These couplers attach to your existing 1/4” hoses and effortlessly snap to R1234yf A/C service ports. All metal construction for extra durability Easily convert any standard 1/4” A/C hose to connect to standard R1234yf service ports
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