Re: Mercruiser Oil Filters
35-883702K is designed to be use on 4.3L (GEN +) and (4BBL) Reman 4.3L CARB ALPHA/BRAVO
35-883702K is used on V6's with out remote filter.
35 866340Q03 Quicksilver Oil Filter suitable for 3 litre in line 4 cylinder, 4.3 V6 with top mounted remote oil filter, 5 litre and 5.7 V8 and 5.7 litre 350 Mag.
Fits; Mercruiser 4 and 6 cylinder GM based petrol engines except the 4.3L V6 without a remote oil filter.
All inline GM based in-line 4 and 6 cylinder engines, GM based V-6 with remote top mounted oil filter and Mercruiser GM V8 models, 3 litre, 4.3 V6 with top mounted remote oil filter, 5 litre and 5.7 V8 350 Mag.
Note 4.3L V-6 without remote oil filter requires Part Number 35-883702Q
Quicksilver Part No: 35-866340Q03 - Replaces 35-883702Q12 Note: 12 at the end is buying a bulk of filters 12 filters in a box.
So in your case the 2 correct numbers to use are 35-866340Q03 or 35-866340K01.
The Q = a white filter name branded Quicksilver while the K is a black filter name branded Mercruiser.