Full Function Engineering Primary Fuel Rail



Fits 86-91 13BT S4 S5


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

Additional information

Weight 1.00 lbs
Dimensions 6.00 × 4.00 × 4.00 in