Mastercool 58490-003 — R134a Low Side 13mm Connector

R134a Low Side 13mm Connector for Valve Core Service

The Mastercool 58490-003 is a low-side 13mm connector designed for use with the 58490 Universal R12/R134a Master Kit. This connector allows access to R134a low side service ports for valve core removal and installation without discharging the system.

Key Features

• 13mm Connection: R134a low side standard
• Low Side Port: Designed for low-pressure side
• R134a Compatible: Specifically for R134a systems
• Professional Quality: Durable construction
• Part of Master Kit: Component of 58490 kit
• No System Discharge: Works with ball valve system

Technical Specifications

• Model: 58490-003
• Type: R134a low side connector
• Connection Size: 13mm
• Side: Low side (low pressure)
• Compatible Refrigerant: R134a
• Barcode: 700376101133
• SKU: 58490-003
• HS Code: 84189910

Applications

• R134a low side valve core service
• Automotive A/C service
• Low pressure side access
• Valve core replacement
• Used with 58490 master kit

Low Side vs High Side

Low Side (This Product - 13mm):

• Low pressure side of A/C system
• 13mm connection size
• Blue service port (typically)
• Lower pressure operation

High Side (16mm):

• 58490-002 — R134a High Side 16mm Connector
• High pressure side of A/C system
• 16mm connection size
• Red service port (typically)

Part of Complete System

This connector is part of the complete valve core service system:

• 58490 — Universal R12/R134a Master Kit (complete kit)
• 58490-002 — R134a High Side 16mm Connector
• 58490-003 — R134a Low Side 13mm Connector - This Product
• 58490-378 — GM Large Bore Valve Core Tool
• 58490-768 — Eaton R134a LP Valve Core Tool

Why Choose Mastercool Connectors?

• Professional Quality: Built to demanding standards
• Precise Fit: Correct sizing for R134a systems
• Durable: Long service life
• System Compatible: Works with ball valve system
• No Refrigerant Loss: Part of no-loss system

Perfect For

• Automotive A/C technicians
• R134a system service
• Low side valve core access
• Replacement connector for 58490 kit
• Workshop and mobile service

Professional Quality: Mastercool valve core service components are built to professional standards for reliable performance. The 58490-003 is a 13mm R134a low side connector designed for use with the 58490 Universal Master Kit, providing access to low pressure side service ports for valve core removal and installation without system discharge.