Hello Dan, I’m Newf from the Home Depot’s how-to Community. Thank you for your question.
Yes, the “D140 bagger system” would work. John Deere tractor baggers for the 100 series come in 3 versions. Each varies by the deck size of the tractor. For 42" decks, use BM21888. For 54" decks, use BM21376. Home Depot sells the bagger system for a 48” 100 series tractor, which includes the D140. The model number is BM21889. You can find it here:http://www.homedepot.com/buy/outdoo...
I hope this helps,