Four Seasons 38642 A/C Orifice Tube - Front

Reliable A/C Orifice Tube for Audi, Buick, Cadillac, and More

The Four Seasons Orifice Tube 38642 is a precision expansion device designed to regulate refrigerant flow in automotive air conditioning systems. Engineered for compatibility with various makes and models, this yellow standard-style orifice tube ensures consistent A/C performance and system efficiency.

• Part Number: 38642
• Brand Line: Orifice Tube
• Orifice Diameter: 0.062 inches (1.537 to 1.613 mm)
• Color: Yellow for easy identification
• Pack Quantity: 1
• Style: Standard A/C orifice tube

Product Line Details: Four Seasons Orifice Tube

The Four Seasons Orifice Tube product line focuses on high-quality expansion devices that control refrigerant flow within automotive A/C systems. The 38642 orifice tube is part of this line, designed to meet OEM specifications for a range of vehicles including Audi, Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, Volkswagen, and Volvo. This ensures reliable operation and proper system pressure regulation for optimal cooling performance.

Technical Description and Vehicle Compatibility

This A/C orifice tube features a precise orifice diameter of 0.062 inches (approximately 1.537 to 1.613 mm), which is critical for maintaining the correct refrigerant flow rate. The yellow color coding helps technicians quickly identify the part during service. Compatible with models such as Audi A4, A6, A8 (including Quattro variants), Buick LeSabre, Cadillac Eldorado, Chevrolet Malibu, GMC Safari, Oldsmobile 90, Pontiac Grand Am, Volkswagen Passat, and Volvo S40, V70, and more, the Four Seasons 38642 supports a wide range of applications.

Common Applications and Issues Addressed

• Regulates refrigerant flow to prevent A/C system freezing or overheating
• Maintains proper pressure for efficient cooling in vehicles like Audi A4 Quattro and Cadillac Eldorado
• Prevents compressor damage caused by improper refrigerant metering
• Ensures consistent cabin temperature control in Chevrolet Malibu and Volkswagen Passat
• Supports system performance in climates with temperatures below 105°F (see optional part 38902 for higher temperatures)

Installation Notes and Tips

• Ensure system is fully evacuated and depressurized before removal
• Inspect the A/C system for contamination or damage prior to installation
• Use proper tools to avoid damaging the orifice tube or surrounding components
• Verify correct orientation and seating of the orifice tube during installation
• Consult vehicle-specific service manuals for detailed procedures

Quality Assurance and Warranty

Four Seasons A/C orifice tubes are manufactured to meet or exceed OEM standards, ensuring durability and reliable performance. The 38642 part undergoes rigorous quality control to maintain consistent dimensions and material integrity. While specific warranty details may vary, Four Seasons products typically include coverage against manufacturing defects. Refer to product documentation for exact warranty terms.