Genuine Mazda 1974-1991 Rotary & Automatic RX8 Stationary Gear Bearing Set (2 PCS) - PN 0820-10-502B. Pair of (2) OEM Mazda Stationary Gear Bearings. Will work with all 1974-1991 Mazda Rotary Engines (including 10A, 12A, 13B) and all Automatic RX-8 Engines.