Volvo Penta D1-30 alternate parts

[jflyver]

Hello,
I am in need for an Injectorpump (Main Dieselpump). VP#21192096
On my Injectorpump I see ND 094500-8620 (The ND for NipponDenso)
The engine behind the green paint is either a Shibaura S773L or a Perkins 403D-11 as far as I can see.
I have found an alternate part no. 131017641 but it seem that the last 4 digit in the ND # is lower.
Anybody knowns if a lower dash number in the ND# than -8620 will work ?
Any high time enginehours sailors or other input will be highly appreciated.
Kind regards, Jorgen Nielsen