Four Seasons 38643 A/C Orifice Tube

Four Seasons 38643 Orifice Tube Overview

The Four Seasons 38643 A/C orifice tube is a standard expansion device used in automotive air conditioning systems to regulate refrigerant flow. With a green body and a 0.052 in. (1.000 mm) orifice diameter, it is built for direct replacement service in select Ford Probe and Mazda 626 applications.

Four Seasons Orifice Tube line parts are made for service technicians and DIY repairs that require a precise A/C flow restrictor match. This Four Seasons 38643 orifice tube supports proper refrigerant metering in the HVAC system for the listed vehicles.

Key Features

• Brand: Four Seasons
• Part number: 38643
• Orifice tube style: Standard
• Color: Green
• Orifice diameter: 0.052 in. / 1.000 mm
• Category: A/C flow restrictor for automotive HVAC systems
• Direct-fit application for select Ford Probe and Mazda 626 models

Detailed Product Description

The Four Seasons 38643 is an A/C orifice tube used in expansion device service to control refrigerant flow through the air conditioning system. Its standard design and 0.052-inch orifice size make it a fitment-specific replacement for 1994-1997 Ford Probe and 1998-2002 Mazda 626 models. If you are servicing a Ford Probe A/C system or replacing the Mazda 626 orifice tube, this part number provides the specified flow restriction for those applications.

This part cross-references Dayco 92012 and UAC EX2000C for the same application.

What It Is Used For

• Restoring correct refrigerant metering in the A/C system
• Replacing a clogged or worn orifice tube
• Addressing weak cooling performance caused by restricted flow
• Supporting proper HVAC system operation after A/C service
• Matching the specified flow restrictor for Ford Probe and Mazda 626 repairs

Installation Notes and Tips

Verify the vehicle year, make, and model before ordering. This part is listed for 1994-1997 Ford Probe and 1998-2002 Mazda 626 applications, with the orifice tube position noted as N/A in the catalog data. During A/C service, inspect the system for contamination and confirm the replacement tube matches the required orifice diameter before installation.

Quality Assurance

Four Seasons is a recognized aftermarket brand in automotive HVAC service, and this orifice tube is cataloged to the specified dimensions and vehicle applications for accurate replacement selection.