58490-YF
UNIVERSAL R1234yf MASTER KIT

Product Description

The perfect tool for replacing damaged valve cores with R1234yf refrigerant in the system without losing the systems charge.

• DESIGNED FOR R1234YF SYSTEMS – Safely remove and replace valve cores while the system remains pressurized using included 14mm and 17mm service port connectors.

• WORKS UNDER PRESSURE – Built-in stainless steel ball valve and internal shutoff system allow core servicing without refrigerant loss.
• FITS STANDARD VALVE CORES – Compatible with standard cores used in R1234yf systems (same internal core dimensions as R134a).
• PRECISION CONNECTIONS FOR R1234YF PORTS – Includes correct high side (17mm) and low side (14mm) connectors required for R1234yf service ports.
• COMPACT AND DURABLE – Rugged brass body, stainless steel components, and hardened steel shafts built for professional shop environments.
• MOLDED STORAGE CASE INCLUDED – Keeps all adapters and shafts protected and organized.

INCLUDES:

• Valve core remover/installer with internal shutoff
• 17mm high side R1234yf service port connector
• 14mm low side R1234yf service port connector
• Standard valve core shaft
• GM large bore valve core shaft
• Eaton high side valve core shaft
• Durable molded storage case

OPTIONAL ACCESSORIES: UPGRADE YOUR KIT

Hi-Flo Adapter for Unrestricted Recovery & Charging
Maximize your system workflow by pairing your 58490-YF Kit with our optional Hi-Flo Adapter. Designed to connect directly to the valve body after core removal, this adapter creates a direct line between the system port and your recovery machine or charging manifold.

• Maximum Efficiency – Eliminates flow restrictions caused by standard service port geometry and valve cores.
• Faster Turnaround – Speeds up recovery and evacuation/charging times significantly.
• Direct Connection – Easily attaches to the valve body for seamless hose hookup.

58490-AD-12ML: Adapter Hi-Flo 1/2” ACME-MLH