The NOS Cheater fuel solenoid has been the standard in the performance and racing world for over 35 years. The 18050NOS & 18050BNOS solenoids feature a large activation coil, ideal for progressive nitrous systems with a red or black powder coated housing, large orifice size and FKM plunger material for durability. All NOS solenoids feature stainless steel bases with the NOS logo so you know it is a quality NOS solenoid.