FC3S 13B-T Rail Set S4

13B-T FC3S Primary and Secondary Fuel Rail
The diffusers must be removed.
Includes Lower O-Ring Inserts
Black Color Only
48mm Primary Fitment Only
Fitment: 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
13B-T’s require different lengths/combinations depending on S4 or S5.