Universal Air EX9433MSC A/C Expansion Valve

Universal Air EX9433MSC Block Expansion Valve

The Universal Air EX9433MSC is a block expansion valve for automotive A/C systems. It is listed for select Mercedes-Benz applications, including 1984-1993 Mercedes-Benz 190E, 1992-1993 Mercedes-Benz 300CE, and 1990 Mercedes-Benz 300D.

Key Features

• Block expansion valve for HVAC A/C flow restriction control
• Direct fitment listing for Mercedes-Benz 190E, 300CE, and 300D applications
• Fits 1984-1993 Mercedes-Benz 190E with mounting studs
• Fits 1992-1993 Mercedes-Benz 300CE and replaces OE part number 2018300784
• Fits 1990 Mercedes-Benz 300D
• Part number EX9433MSC for catalog and service reference

Detailed Description

Universal Air EX9433MSC is an A/C expansion valve used in Mercedes-Benz HVAC systems to regulate refrigerant flow through the evaporator circuit. This block expansion valve is cataloged for 1984-1993 Mercedes-Benz 190E with mounting studs, 1992-1993 Mercedes-Benz 300CE, and 1990 Mercedes-Benz 300D. The EX9433MSC part number is also useful when matching service records or verifying replacement selection against OE reference 2018300784 on the 300CE application.

What It Is Used For

• Restoring refrigerant metering in a Mercedes-Benz A/C system
• Addressing poor evaporator feed caused by a worn expansion valve
• Correcting inconsistent cabin cooling performance
• Replacing a leaking or restricted block expansion valve
• Supporting proper A/C system operation on 190E, 300CE, and 300D models

Installation Notes and Tips

Verify the vehicle year, model, and OE reference before ordering. For fitment accuracy, confirm the application details for your Mercedes-Benz 190E, 300CE, or 300D, including the mounting-stud configuration noted for the 190E listing. Clean the surrounding A/C components during service and evacuate/recharge the system according to factory procedures after replacement.

Quality Assurance

Universal Air catalogs this EX9433MSC block expansion valve for the listed Mercedes-Benz applications and OE cross-reference use on the 300CE fitment.