1751519M1 Exhaust Valve Pin Type Fits Massey Ferguson Tractor TE20 TO20 830726M9One New Aftermarket Replacement Exhaust Valve (Pin Type) Fits Massey Ferguson Tractors TE20 and TO20 This aftermarket replacement exhaust valve (pin type) fits the Continental Z120 4 cylinder gasoline engine used in the Fits Massey Ferguson TE20 and TO20 tractors. The pin type keeper design uses a cross pin locking system to retain the valve spring. Note: this valve fits the Continental Z120 engine only it does not fit TE20 tractors equipped with the