This is an OEM LS Tractor Air Filter.  Part number 40007576
FITS the Following Models

• MT230E, MT235E, MT235HE, MT240E, MT240HE, MT342,MT345, MT345H, MT342 ,MT350, MT352, MT357,
• XG3140, XG3140H,
• XR4140, XR4140H, XR4145, XR4145H, XR4150, XR4150H, XR4155, XR4155H
• K5047,K5050