OER Parts offers a wide selection of Cooling System Components for your 1987 Buick Regal. OER Parts offers 1987 Buick Regal Overflow System Components, 1987 Buick Regal Bottles and Caps, 1987 Buick Regal OE Style Radiator Overflow Jars, 1987 Buick Regal Stainless Steel Radiator Overflow Tank , 1987 Buick Regal Overflow Jar Bracket, 1987 Buick Regal OE Style Overflow Jar Cap, 1987 Buick Regal Billet Aluminum Overflow Jar Cap, and 1987 Buick Regal Radiator Overflow Bottle, Hose & Cap Set.