Which part did you mean?
Sometimes different manufacturers use similar part numbers.
Which one of those listed below did you mean?| Racor (43506) RAC43506 - O-RING,9/16 SAE PORT |
| Yanmar Diesel (43506) YAN43506 - USE 013434 NLA |
| Mercury Marine (91-43506) 91-43506 - WRENCH Bearing Re QPD=NO - Replaced by 91-43506T |