Universal Air EX5151C A/C Orifice Tube - Front or Rear

White Orifice Tube for A/C Flow Control

Universal Air EX5151C is a white A/C orifice tube used in fixed-orifice HVAC systems to regulate refrigerant flow through the liquid line. It is a direct-fit service part for a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, Oldsmobile, Audi, Saab, and Isuzu applications.

Use EX5151C when servicing front or evaporator-mounted A/C systems that call for a white orifice tube. This part number is commonly searched for Chevrolet Express, GMC Savana, and Trailblazer-family repairs, along with many GM truck and passenger car applications.

Key Features

• White orifice tube for fixed-orifice A/C systems
• Fits front, rear, and N/A-position applications listed in the fitment data
• Used in liquid-line refrigerant metering systems
• Service replacement for many GM vans, trucks, SUVs, and cars
• Part number EX5151C for easy catalog matching

Detailed Description

Universal Air EX5151C is an HVAC flow restrictor designed for vehicles that use an A/C orifice tube instead of an expansion valve. It meters refrigerant entering the evaporator, helping maintain proper system operation in fixed-orifice air conditioning layouts. Fitment includes 2015-2020 Chevrolet Express 2500 and Express 3500 front applications, 1996-2020 GMC Savana 2500 and Savana 3500, plus many earlier GM platforms such as Chevrolet Astro, GMC Safari, Chevrolet S10, GMC Sonoma, Buick Regal, Pontiac Bonneville, and Cadillac DeVille. EX5151C also appears in Audi, Saab, and Isuzu listings where a white orifice tube is specified.

This part cross-references OE-style service applications for the same vehicle coverage.

What It Is Used For

• Restoring correct refrigerant metering in a fixed-orifice A/C system
• Replacing a restricted or contaminated orifice tube
• Addressing weak cabin cooling caused by improper refrigerant flow
• Servicing front liquid-line A/C circuits on vans, SUVs, and cars
• Repairing GM truck and van HVAC systems that specify a white orifice tube

Installation Notes and Tips

Verify the vehicle’s original orifice tube color and system design before installation. Match the application by year, make, model, and position, since some listings use front, rear, or evaporator-tube locations. Inspect the liquid line and surrounding A/C components for debris or contamination before reassembly.

Quality Assurance

Universal Air EX5151C is cataloged as a white orifice tube for confirmed vehicle applications across the listed fitment range. Use the fitment data to confirm the correct A/C flow restrictor for your vehicle before service.