dkmcgowan Posted August 10, 2015 Share Posted August 10, 2015 I have a quick question... I am replacing my injectors and want to have new disconnects... I know it will use 83502745, which is 5/16" I have read about 83504447, which is the 3/8", but looking at my parts manual, it looks like on my vehicle the 3/8" is only used for transmission lines and not fuel. It looks like I need two 83502745 5/16", one for the main and the return. Some on here say they are two different sizes though. Mine is an 89 with a 4.0L, could be a year thing or a 2.5 thing? Link to comment Share on other sites More sharing options...
reubj Posted August 10, 2015 Share Posted August 10, 2015 IIRC both mine are 5/16". Best way is to use calipers to check the diameter of the fuel line on your vehicle. Link to comment Share on other sites More sharing options...
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