Used 6V71 DETROIT DIESEL Engine For Sale In Slippery Rock, Pa, Good Used DETROIT DIESEL 6V71 Engine For Sale. Model 7063-7000. Engine Serial # 6va124420. Industrial Fan Flywheel Application. Rc Arrangement; Right Hand Rotation (viewed From Front Of Engine) Starter On Left And Oil Cooler On Right (viewed From The Rear Of The Engine Flywheel End). See It Run