Full Function Engineering Primary Fuel Rail

13B-T FC3S Primary Fuel Rail

The primary diffusers must be removed.

Includes Lower O-Ring Inserts

Black Color Only

48mm Primary Fitment Only

Fits: 86-91 Mazda RX7 (S4 and S5 13B-T)

1/2″ Bore – Suited for high horsepower needs
O-ringed end fittings – No more Teflon tape/worn threads!
Centering Spacers – Ensuring injectors are centered for no air/fuel leaks
Stainless Hardware – High strength/corrosion resistant