3SX Custom FPR + Lines Kit

3SX offers a custom kit to replace your stock fuel pressure regulator with a high quality FueLab adjustable FPR. The benefit is it includes all the lines and fittings to plug straight into your stock fuel system, connecting to the back fuel rail and the stock return line exiting the engine bay.

You can opt to get the kit with or without a fuel pressure gauge, though a gauge will be necessary for tuning the regulator.

NOTE: The FPR kit now includes a 24" line (pictured in the install pics below) rather than the short line pictured above, which allows a lot more flexibility in mounting the FPR. 3SX typically installs it against the firewall using a pair of self-tapping screws (not included in kit).

3SX Custom Complete Underhood Fuel Kit!
Filter + FPR + Loop + Lines + Gauge!

This is a complete bolt-in kit to replace your fuel system underhood while maintaining stock feed+return lines and rails! It includes our custom high flow fuel filter kit with lines going up to the front fail, our fuel rail loop kit from front rail to back rail, and FPR kit with gauge to manage your fuel pressure. All fittings and lines are included!

NOTE: You can opt to get the kit with or without the fuel loop should you already have that installed. The loop will not work on the SOHC engine, so opt for the kit without the loop if you have a SOHC.

Example of 3SX FPR Kit Installed

While this is by no means the only way to install the FPR kit, it is one way we installed it on a customer car.

The following is complete underhood kit with filter and FPR and loop and gauge.

NOTE: If you will be running E85 or other alcohol based fuel, you will need to also get the one of the stainless steel filter elements to put in your filter. The elements are listed here. The kit includes the 3-inch filters.