New Standard relay.  This relay operates the engine radiator cooling fan.  This is a 5-pin oval relay and has 2 hole mounting points on a metal tab.  Fits the following:

88-92 Corvette (all models)
88-92 Firebird/Trans Am (all models)
88 Fiero (all models)

NOTE : Always compare the pin count AND mounting system of a relay before purchasing.  Alot of the relays look similar at first glance, but different pin (terminals) and mounting methods differ (some do not even have mount provisions).  Relays may or may not have print (numbers/diagrams, etc) on them.