Inline fuel filter
 

I am going to replace my inline fuel filter on my 2 stroke Mercury outboard and the inline filters say for 4 stroke motors ,is there a difference?

The inline on the older 2 strokes had barb fittings that clamped in place with wire clamps or small zip ties. The four strokes have a different barb that clips into a special fitting.

I think

Should be able to find plenty of the older ones. Just make sure the one u get has barbs, not the rings with the long nipples.

As far as the filtering element, i don t think there is any difference.

what filter are you replacing? On the engine? or the water separating filter in the boat?

On the engine

what Phat said, the newer engines use quick connects, the older engine has barb fittings

Got it, thanks guys

Do you know if it's 3/8 or 5/16 I'm not getting a good answer,even the owners Manuel does not say.

The fuel line for my 1980 Mercury 200 HP is 5/16. I confirmed that when I installed an in-line fuel filter a year ago. Interestingly, when I bought the boat 3 years ago, the only fuel filter was the screen which is on the outboard.

I added a fuel-water separator also, which was 3/8", so I ended up buying this reducer to transition from 3/8 to 5/16.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Duke, Im confused about the size, I bought two filters and a 24 inch fuel line from Amazon and put down my motor and it says 5/16 but I think it's 3/8 by the primer bulb . I didn't get to my motor to check cause it's covered for the winter I'm hoping it is 5/16 cause that's what I got But I think 3/8 would be better since its larger Even you said to differant sizes Time will tell unless a mechanic ( spareparts) who really knows his stuff replys but I hope your right too Thanks for the reply

Dam Amazon has everthing .

My primer bulb is 3/8 too. So is the fuel line from the tank, and the fuel-water separator. I used the reducer from Amazon to drop down to 5/16 for the connection to the outboard.

I was thinking 3/8 should be better since I have a 150 hp but since you have a 200 hp and have a 5/16 line than I will be good, I think I'm good to go Hey Duke thanks for the advice and help