Part #02010-001. Should fit every Engine, Clucth. I tryed it on my losi 4 shoe and fit perfect the way they its made it well fit any motor im asuming not 100% but really cant see how. A great price too at only 16.99 give or take at you local hobby shop. I TRULY think it well make you engine bearing last longer And Your motor due too not any have mud dirt geting any were it every again. The rb Shark 9 a great motor but im really laking top end go to try a novarossi 9886 pipe with the L shape ofna header to see if i can wake it up. My temps are around 260 i know you shouldnt go by temps but all my other Rbs run around 220-250 with great power. What do you think Chris P. I feel i have a good bit of fuel thought it 2 1/2 gallon and more. Thanks for any help bro Speedyrob