Parts & Accessories Spare parts Lowest prices and best work you see here. Note: All parts are on the customer. Engine tune-up for four cylinders: spark plugs, coils, sensors, exhaust, intake manifold, throttle body, and air sensor. All this for 100 riyals. Engine tune-up for six cylinders: 150. Engine tune-up for 8 cylinders: 250. Changing car suspension parts including shocks and sway bar links for four cylinders, labor only (excluding machining): 300. Six cylinders: 400. Eight cylinders: 500.