While Acura parts are technically Honda parts adn will all have Honda part numbers, you mut get them from an acura dealer…such as www.acuraoemparts.com , or www.acuraparts247.com Apparently they keep the two separate even in the numbers cross reference
If you need parts that are identical between an Acura car and a Honda, then you could get them from a Honda dealer. I do know of some cases where a Honda dealer will order you “Acura” parts solely off the part number though, but I can’t say Majestic can do that…you’d have to call them.