Our complete valve kit fits the 264 CI inline 4 motor used in Farmall Super M tractors, Farmall 400, and Farmall 450.***WE NEED TO KNOW YOUR SERIAL NUMBER AND OTHER INFO TO GET YOU THE CORRECT KIT*** Includes the following: 4 X 264 CI GAS Intake Valve Seat 4 X 264 CI GAS Exhaust Valve Seat 4 X 264 CI GAS Intake Valve 4 X 264 CI GAS Exhaust Valve 16 X 264 CI GAS Valve Keeper 8 X 264 CI GAS Valve Stem Seal 8 X 264 CI GAS Valve Guide 4 X 264 CI GAS Valve Spring 4 X 264 CI GAS Valve Spring