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Fuel Line Question

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I will be starting a 2.5L to 3.4L engine swap this weekend. I understand that as part of that I will need to extend a fuel line a little bit. To do that I will need the right size fitting. I spoke with Trent, who just completed a conversion, and he indicated that the fitting is 16mm, but wasn't sure of the length or line size (his shop did the work).

I will discover the details in good time I'm sure but if I can order the parts in advance that would help.

Anyone have the details?



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  • 1 year later...


The lines are AN-5 sized and use 14mm and 16mm ball-seat fittings. The size of the fitting varies depending on your particular motor/car combination.

The crossover lines from one fuel rail to the other are AN-6 on the 2.5L motor. On the 3.4L motor the pressure side crossover is AN-8 and the return is AN-6.

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