Endurance Warranty, Omega Auto Care and American Dream Auto Protect In the throes of summer, nothing beats driving in your car, listening to your favorite playlist and blasting the air conditioning.

In '80, Pontiac introduced the new R4 A/C compressor to some of its Trans Ams and Firebirds. Weighing in at nearly half the mass of the long-in-the-tooth A6 compressor, the R4 continued in the F-body ...