The 100101A1 piston is a genuine OEM CASE Construction reciprocating component used in hydraulic or engine cylinder assemblies, available from Southeastern Equipment Company. Specifications Part Number 100101A1 Brand CASE CONSTRUCTION Category Piston Compatible equipment This part fits Loader including models 1021F, 1021G, 1021G+, 1021G2, 1021G2 WHEEL LOADER, 1021G WHEEL LOADER, 1121F, 1121G, 1121G+, 1121G2, 1121G2 WHEEL LOADER, 1121G WHEEL LOADER, W270C, W300C. Frequently asked questions What is the part number? The manufacturer part number is 100101A1. Is this a genuine OEM part? Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option. Will this fit my machine? See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm. Where does this ship from? Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.