Re: Identify this lower unit? Home › Forum › Ask A Member › Identify this lower unit? › Re: Identify this lower unit? Randy in TampaReplies: 619Topics: 114 February 4, 2018 at 11:39 pm #70639 model 6039 Speeditwin lower unit, there were three different lower units as I remember that would be the newest, I think 😎 Attachments: