HomeHVAC > A/C Flow RestrictorsUniversal Air EX9433MSC A/C Expansion Valve
Part #: EX9433MSC

Universal Air EX9433MSC A/C Expansion Valve

Block Expansion Valve
13 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Block Expansion Valve
Fitment: Mercedes-Benz, 190E, 300CE, 300D, and 190D
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Reliable A/C Expansion Valve for Mercedes-Benz 190E, 300CE, 300D

The Universal Air Block Expansion Valve EX9433MSC is designed to regulate refrigerant flow in the air conditioning systems of select Mercedes-Benz models. This precise component helps maintain optimal cooling performance and system efficiency.

  • Compatible with Mercedes-Benz 190E, 300CE, and 300D models
  • Part number EX9433MSC for accurate identification
  • Part of the Universal Air Block Expansion Valve product line
  • Controls refrigerant flow to ensure consistent A/C operation
  • Manufactured to meet OEM specifications for fit and function

About the Universal Air Block Expansion Valve Product Line

The Block Expansion Valve line from Universal Air focuses on delivering reliable A/C flow restrictors tailored for specific vehicle applications. This product line emphasizes precise control of refrigerant expansion, which is critical for maintaining proper air conditioning system pressure and temperature. The EX9433MSC is engineered within this line to provide consistent performance for Mercedes-Benz vehicles requiring this specific valve type.

Detailed Product Description

The EX9433MSC A/C expansion valve is a key component in the HVAC system of Mercedes-Benz 190E, 300CE, and 300D models. It regulates the flow of refrigerant entering the evaporator, ensuring the system maintains the correct pressure and temperature for effective cooling. Proper function of this valve prevents issues such as compressor overload and uneven cooling. Designed to meet the exact fitment requirements of these Mercedes-Benz models, this valve supports the longevity and efficiency of the vehicle’s air conditioning system.

Common Issues Addressed by This Expansion Valve

  • Inconsistent or weak air conditioning cooling
  • Refrigerant flow irregularities causing system inefficiency
  • Compressor cycling or failure due to improper refrigerant regulation
  • Frost buildup on evaporator coils
  • Unusual noises or pressure fluctuations in the A/C system

Installation Notes and Tips

  • Ensure compatibility with Mercedes-Benz 190E, 300CE, or 300D before installation
  • Follow manufacturer guidelines for refrigerant handling and system evacuation
  • Inspect related HVAC components for wear or damage during replacement
  • Use proper tools to avoid damage to the valve or surrounding parts
  • Test the A/C system after installation to confirm proper operation

Quality Assurance and Warranty

The Universal Air EX9433MSC expansion valve is manufactured to meet industry standards for durability and performance. While specific warranty details may vary, Universal Air products typically come with a limited warranty covering defects in materials and workmanship. This ensures confidence in the part’s reliability when installed in compatible Mercedes-Benz 190E, 300CE, and 300D vehicles.

This part fits 13 vehicles. Search below:

YearMakeModelPositionNotes
1993Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1993Mercedes-Benz300CEN/AReplaces OE Part Number(s) 2018300784; Block Expansion Valve
1992Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1992Mercedes-Benz300CEN/AReplaces OE Part Number(s) 2018300784; Block Expansion Valve
1991Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1990Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1990Mercedes-Benz300DN/ABlock Expansion Valve
1989Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1988Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1987Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1986Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1985Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve
1984Mercedes-Benz190EN/Awith Mounting Studs; Block Expansion Valve

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.