Compability: This belt pulley kit is replacement for Engine(for) 283, 305, 307, 327, 350, 400. And it will NOT work with air conditioner compressors. Belt Size: The cogged belt width is 1.5 inch and 40.5 inch long, which can effectively prevent sliding in the bump drive process, easy to use. 1:1 Ratio: The pump has a 1:1 ratio to the crankshaft pulley and is used with the long water pump (not included) up to a 5/8 inch center shaft. Excellent Performance: Uniquely designed AC pulley outer lip can be used to keep the belt aligned. The grooves in the V belt of the crank pulley can be used to run power steering. Durable Material: This belt pulley kit is specially designed to withstand extreme temperature changes, made of aluminum alloy + rubber, with reliable durability. 1.5 inch Wide belt, 40.5 inchLong 1:1 water to crank pulley ratio Fitment: Replacement for Engine(for)283, 305, 307, 327, 350, 400. Works with LONG water pump with 5/8in center shaft Will NOT work with air conditioner compressors. 1 x Pump Pulley. 1 x Crank Pulley. 1 x Alternator Pulley. Crankshaft gaskets may be required for some vehicles. Perfect for racing or street cars! Our listing price includes the value of goods, packaging cost, and export. Please check with your country’s. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.