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.