Old Air Products Air Conditioning V.I.R. Inlet Service Block With Sight Glass Tube (74-77 Corvette C3)Find parts that fit my vehicle

Restore Factory A/C Operation With Improved Monitoring. This Air Conditioning V.I.R. Inlet Service Block brings your Corvette’s original air conditioning system back to full working order while adding the convenience of a visible sight glass tube. It’s ideal for restorers and owners converting their system to R134a or performing routine service on aging A/C components. The integrated sight glass offers a clear view of refrigerant flow, aiding diagnostics and refrigerant filling accuracy.

Built to Perform Under Pressure With OEM Compatibility. Constructed from high-grade aluminum and machined to tight tolerances, this service block is made to withstand high refrigerant pressure and temperature cycles. It integrates perfectly with stock V.I.R. components and hose ends, allowing you to retain the factory setup while ensuring modern reliability and improved serviceability.

Installation. This product installs into the original V.I.R. assembly using factory line fittings. Professional A/C system service is recommended.

Application. This Air Conditioning V.I.R. Inlet Service Block With Sight Glass Tube fits 1973–1977 Corvette models.

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