Volvo Penta 4 Cylinder SOHC 8V Head B230 Engine 1000531 Slotted V Camshaft. In excellent condition. All valves and seats are good. Had an excellent compression test prior to removing from engine. Cylinder number 1 exhaust port is not rotten as is common with these heads. Valves have been closely inspected for cracks. V Camshafts are very aggressive.