Product Description
Easily Convert Any R134a Manifold Gauge Set to a R1234yf Manifold Gauge Set
Kit Includes:
83834 high side R1234yf 12 mm-F x 17 mm coupler
83934 low side R1234yf 12 mm-F x 14 mm coupler
83633 1/2” ACME-M x 1/2” ACME-F LH thread adapter
(2) 83735 12mm-M x 14mm-F R1234yf adapters
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 rather than left to chance, giving technicians a coupler that seals right, fits right, and protects the service port on every connection.
FEATURES:
- One-Piece Forged Brass Body: No welded seam like a two-piece machined body — just solid, forged brass holding its shape and seal integrity through years of daily use
- Recovers Trapped Refrigerant: Recovers refrigerant trapped between the coupler and fitting instead of venting it, reducing refrigerant loss and lowering costs – especially with higher-priced R1234yf
- Extended Disconnect Protection Sleeve: Prevents the coupler from being removed before the valve core is fully closed, eliminating accidental refrigerant loss through an open port
- Patented Spring-Loaded Depressor: Manufactured to reach the maximum valve core depth specified by SAE guidelines, ensuring reliable, consistent engagement across standard service ports
- Precision-Machined 18mm Hex: Machined to a true 18mm after forging, so a standard wrench seats perfectly every time — no rounded corners, no slipping
- Nickel-Plated Brass: Protects the body from corrosion and discoloration through years of shop use
- All-Metal Construction: No plastic components, built to hold up to drops, impacts, and daily wear
- Meets SAE J639 & J2888: Full compliance with R1234yf service equipment standards
SPECIFICATIONS:
- Compliance: Meets SAE J639 & J2888
- Body: One-piece forged, nickel-plated brass
- Construction: All-metal, no plastic components
- High Side: 12mm-F x 17mm Service Port Major Diameter
- Low Side: 12mm-F x 14mm Service Port Major Diameter
- Hex: Precision-machined 18mm across flats
- Color Coded: Red (high side) / Blue (low side)
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