Ordering right part

[shovelno3]

I have a 40 ELHPT 3 cylinder 4 stroke EFI Serial OT991742 2005model with a damaged gear housing and need a new one. I dont want to order the wrong part as I live internationally. the search by serial number isnt finding my motor and ive tracked it down to this.
Manufacturer: Mercury Marine
Catalog: Mercury Outboard Parts
Model: 40 EFI (3 CYL.)(4-STROKE) (View All)
Serial: 0T409000 THRU 1B226999 (View All)
Component: Gear Housing, Propeller Shaft - 2:1 Gear Ratio (View All)
Can you please advise me if this is the correct part
Thanks shovelno3

[boats.net]

the following link is for your model.
2005 1A40411DD Mercury Outboard Parts