It’s better to choose original or recommended by Honda timing belt for Odyssey 2.3. The accessory should have 112 teeth and be of 24 mm width. Company installed ordinary belts in 1999 and F23A7 engines proved their efficiency. For 2.3 motor in Odyssey special size of timing parts are needed. One more important dimension is gap division in 9.525 N/mm and also profile type - HTDA. Gas grid system in Honda Odyssey needs good timing belt to run.
To save up money find good analog propositions for Honda Odyssey with your engine at 2.3. So, during servicing your 1999 Honda Odyssey purchase quality materials. In any case go to other than 24 mm wide belt for F23A7 motor code. It’s impossible to provide 9.525 N/mm gap division with other than HTDA type of belt profile.