Are S4TII and S5TII fuel rail injector fittings the same? (not the harness)

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10-20-04, 12:38 PM

MountainTurbo

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Are S4TII and S5TII fuel rail injector fittings the same? (not the harness)

Just wondering if there's a difference in the way the inectors attach to the fuel rail between an S4 and an S5. I know the harness is different, but if you resolved the harness issue, would injectors off of an S5 fit into the S4 rail, and vica-versa?

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10-20-04, 01:56 PM

Digi7ech

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They fit exactly the same.

I am using a S5 manifold with S4 fuel rail and S4 injectors.

I use to use the S4 fuel rail but will be going to an after market FPR so I need the S4 rail for it's end threads.