Mei 1678 Block Type A/C Expansion Valve for Mack and Volvo Trucks

The MEI 1678 is a block-type air conditioning expansion valve engineered for heavy-duty Mack and Volvo truck applications. This OEM-grade component comes complete with mounting bracket and stud for straightforward installation.

Key Specifications:

• Mount Type: Block-style flange mount with bracket and stud included
• Refrigerant Type: R134a compatible
• Hose Side Inlet: #6 (3/8") with #12 (3/4") female insert O-ring outlet
• Evaporator Side Inlet: #8 (5/8") with #10 (3/4") female insert O-ring outlet
• O-Ring Specifications: #1 (0011/0017), #2 (0013/0015)
• Connection Style: O-ring type fittings for secure, leak-free operation

OEM Cross References:

• Mack: 3543-N1848001, 3543-T4935001, 323453, N1848001
• Egelhof: 324323, 324543
• Bergstrom: 1001448066
• Kysor: 1815001
• Truck Air: 12-1607A

This expansion valve provides precise refrigerant metering to maintain optimal cooling performance in heavy-duty truck HVAC systems. Designed for reliable operation under demanding conditions encountered in commercial trucking applications.