The Yellow Jacket 41337 is the companion R-134a red high-side automotive A/C quick coupler manufactured by Ritchie Engineering. It connects service hoses directly to the larger, high-pressure service port of a vehicle's air conditioning system.Key Technical SpecificationsConnection Type: High-side coupler interface x 1/4" Male Flare (MFL) connection.Refrigerant Compatibility: Tailored exclusively for automotive R-134a configurations but can also be used on other types of refrigerants .Color Coding: Features a bright red anodised knob to ensure technicians quickly differentiate it from the blue low-side part.Manufacturing Quality: Durable brass and metal body, proudly made in the USA.Core Features & FunctionalityThreaded Control Valve: The top red knob manually opens or closes system access, allowing for zero-refrigerant-loss connection under heavy working pressure.Safety Lock Ring: The spring-loaded collar locks firmly onto the high-side service port to eliminate unintended pop-offs and accidental blowouts.Full-Flow Internal Porting: Minimises restrictions to speed up refrigerant recovery, vacuum dehydration, and heavy fluid charging.Cramped Space Clearance: Designed with a low-profile elbow layout to wiggle into tight spaces next to car engine blocks and radiators.
Also can be used on HVAC units with the same service coupler and can also be used with different refrigerants.