The Mastercool 66636-AYF is a professional dual refrigerant brass manifold gauge set designed for both R1234yf and R134a automotive A/C systems. This complete kit includes everything needed to service modern and legacy automotive air conditioning systems.Complete Kit Includes 2.5" silicone dampened gauges — Recalibratable for long-term accuracy 3× 36" R134a standard hoses — Complete hose set R1234yf quick couplers — High and low side (67434, 67534) R134a economy couplers — High and low side (66234, 66334) 1/2" ACME adapter — M×F LH thread (83633) 2× R1234yf adapters — 12mm-M × 14mm-F (83735) Key Features Dual refrigerant compatibility — Service both R1234yf and R134a systems with one manifold Extra access port — Dedicated vacuum line connection Silicone dampened gauges — Smooth needle movement and accurate readings Recalibratable gauges — Maintain accuracy over time Brass construction — Durable manifold body Complete adapter set — Ready for both refrigerant types Technical Specifications Gauge Size: 2.5" diameter Gauge Type: Silicone dampened, recalibratable Refrigerants: R1234yf and R134a Hose Length: 3× 36" (91cm) Hose Type: R134a standard Manifold Material: Brass Related Products 66661-AYF — Same manifold with 3×60" hoses 66672-AYF — Same manifold with 3×72" hoses 85500-AYF — 2.5" high side replacement gauge, R1234yf/R134a 85350-AYF — 2.5" low side replacement gauge, R1234yf/R134a View our complete range of manifolds and gauges for professional HVAC/R service solutions.Essential equipment for automotive A/C technicians servicing both modern R1234yf and legacy R134a systems.
