Powerflex - Rear Upper Control Arm Bushing - Mazda Miata (89 - 05)These are sold as a pack of x2 bushings, so in order to do all of the bushings on both rear upper control arms (x6 total), one would need to purchase x3 packs. Our Heritage Collection bushings utilize the same durometer polyurethane as the Street bushings, but are a dark grey color that mimics the OEM rubber bushings to satisfy the purest of purists. OE OEM Cross Reference Numbers: Arm NA01282A0B Bush NA01288C0B NA01288C0C