Mastercool 83834 Manual High Side Coupler for R1234yf

Mastercool’s R1234yf Manual Couplers start with a single forged brass body — no welded seam, no joint, no weak point. Every dimension, from the seal gland to the hex is engineered to spec, giving technicians a coupler that seals right, fits right and protects the service port on every connection.

• Compliance: Meets SAE J639 & J2888
• High Side: 12 mm-F x 17 mm Service Port Major Diameter
• Hex: Precision-Machined 18 mm Across Flats
• Body: One-Piece Forged, Nickel-Plated Brass
• Construction: All-Metal, No Plastic Components
• With Extended Disconnect Protection Sleeve