Komatsu Dump Trucks HM350-1 HM350-1L. For the parts described with both part number and application machine model or engine model, please make sure to order according to the part number, the application machine model or engine model is just for reference. We supply New Aftermarket Parts for the following.Kind reminder to our dear customers. Please make sure that you're ordering the correct parts. Please let us know if you're not happy with the goods and we will try our best to satisfy you.