These Tomei side-feed, high impedance injectors are direct drop in injectors for the SR20DET or KA24DE factory fuel rail. The injector harness plugs right in without any modifications. Running larger injector such as the 740cc will insure fuel delivery to the motor at higher horsepower, high boost application without running near the maximum duty cycle of the injector. The 740cc size is used for 400+ horsepower applications (although it will work for any setup if tuned) and fuel injection tuning is very important to ensure proper drive ability. The injector O-Rings are not included with this set.

Injectors are sold individually