Long Fuel Injector with 12-Hole Nozzle

The Keihin 16450-R40-A01 is a direct replacement fuel injector assembly engineered for specific Honda engines. This "long size" injector utilizes a 12-hole nozzle for precise fuel atomization and features Keihin EV14 technology. It delivers a flow rate of 26 lb per hour at 43.5 psi (equivalent to 196.5 G per min of N-Heptane), translating to 273.3 cc per minute. This injector is compatible with Honda motors from 2008-2012, specifically the 2.4L K24Z2 and K24Z3 engines. The "A" designation in some part numbers, like 16450-R40-A01 and 16450-R40-Y01, indicates compatibility with California-rated models (A01) and non-California models (Y01), respectively, though they are generally interchangeable. This part is a "Genuine Honda" component, guaranteed by Honda's factory warranty. It is recommended to replace these injectors in sets of four for optimal performance. Installation involves relieving fuel pressure, disconnecting the battery, removing components like the air intake duct and electrical connectors, then carefully removing the fuel rail and old injectors. It's crucial to discard old O-rings and install new ones, with new O-rings often included or available separately. After reassembly, it's vital to reconnect the battery, activate the fuel pump, check for leaks, start the engine, and verify proper injector function. Common compatible vehicles include the Honda Accord (2008-2012), Honda CR-V (2010-2011), and Honda Civic (2012-2015).