One New Aftermarket Replacement Inner Air Filter Fits Massey Ferguson models: 135 (w/ Continental Engine), 135 (w/ Perkins Diesel Engine), 135 (w/ Perkins Gas Engine), and 20.

Also Fits Bobcat Loader models: 543 (w/ Isuzu Engine), 543 (w/ Fits Kubota Engine), 543B, (631 & 731 w/ F2L511 Engine).

Part Numbers: 523419M92, 523416M91, 523416M93