New Gates V-Belt.  This is a premium replacement belt.  This belt couples the water pump to the AIR pump (emission pump).  This belt is approx. 33" effective length. Regardless of fitment notes, you should either match up PN's on your old belt or at least measure your old belt.  If you are missing a belt or it snapped, you should take a measurement of the circumference around the pulleys with the bracket in loosest belt position and then tightest belt position to ensure this belt falls in-between those measurements.  One thing we have learned over the past 25 years restoring these cars is that occaisonally some of the pulleys and brackets have been swapped with other years or models, requiring a different belt, so you should always check size before ordering.  Fits the following:

87 305/350 V8 Camaro
87 305/350 V8 Firebird/Trans Am

NOTE : If purchasing multiple V-belts, please use the "ADD TO CARD" feature vs "BUY IT NOW" to receive discounted shipping.