2150cc (240 lbs hr at OE 58 PSI fuel pressure) FIC Fuel Injector Clinic Injector Set for LS1 engines (High Z) (is301 2150h) Wiring Adapters:PADPDtoJ8 Description: Dual Spring Description: Dual Spring All IPD Plenums come with a full 2 year manufacturer’s warranty to the original purchaser that guarantees all IPD product will be free of any manufacturing defects or cause of any issues or problems related to the vehicle’s engine For aftermarket or other unusual setups please contact us prior to placing your order to make sure you receive injectors that fit properly or you can choose to purchase the optional plug n play adaptors which will convert from the type of plugs on these injectors to the plugs on your harness without any need for cutting or soldering