StrongArm 4708 Buick Skyhawk 4 Door Wagon Tailgate 1983-89 Exact fit, OE quality design ensures easy installation and precise operation No special installation tools required Rubber O-Ring piston seal forces the fluid efficiently through the valving components providing consistent performance Patented Multi-Lobe Seal makes gas springs more tolerant to vibration and temperature extremes Individually tested for performance and reliability