Universal Air SW6490 A/C Thermostat

Thermostatic A/C Switch for Classic Mercury and Ford

Universal Air SW6490 is a thermostatic switch for the A/C clutch and compressor circuit. It is listed for select classic Ford and Mercury applications, including Mustang, Cougar, Montego, and Marquis models.

Key Features

• Thermostatic switch for HVAC A/C clutch and compressor control
• Direct fitment coverage for select 1965-1971 Ford and Mercury vehicles
• Application-specific for classic Mustang, Cougar, Montego, and Marquis platforms
• Universal Air Thermostatic Switch line
• Part number SW6490 for catalog and service matching

Fitment Details

• Fits 1965 Ford Mustang, N/A
• Fits 1967-1970 Mercury Marquis, N/A
• Fits 1968 Mercury Montego, N/A
• Fits 1968-1971 Mercury Cougar, N/A
• Fits 1971 Mercury Montego, N/A

Product Description

Universal Air SW6490 is an A/C thermostat used in HVAC systems to regulate compressor cycling based on temperature control. For owners servicing a 1965 Ford Mustang or a 1968-1971 Mercury Cougar, this thermostatic switch provides the correct application match for classic climate-control repair. It also fits 1967-1970 Mercury Marquis and 1968, 1971 Mercury Montego applications listed in the catalog.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Restoring A/C compressor cycling control
• Replacing a failed or inconsistent thermostat switch
• Addressing compressor engagement that is too frequent or too infrequent
• Correcting HVAC temperature regulation issues in classic Ford and Mercury systems
• Supporting service work on original-style air conditioning components

Installation Notes

Verify the vehicle year, make, and model against the listed fitment before installation. Inspect the existing HVAC wiring, connector condition, and surrounding A/C components during service. Confirm proper thermostat switch operation after installation by checking compressor cycling and system response.

Quality Assurance

Universal Air Thermostatic Switch SW6490 is cataloged for specific classic vehicle applications to support accurate parts selection and service matching.