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honda k series 450cc fuel injector k20 k24
Clean Injection 450 Series 450cc Fuel Injectors with plug-and-play adapters to suit HONDA/ACURA K20 and K24 Engines
Looking to upgrade injectors without breaking the bank? The listing is for a set of CI450 series 450cc fuel injectors to suit HONDA K Series engines. Perfect for the budget builder looking for rock-solid reliability and superb performance for an excellent price.  Injectors are covered under our unlimited-mile warranty.  PLEASE VIEW THE VEHICLE COMPATIBILITY GUIDE BELOW. Injectors are high impedance so no resistor box/injector drivers necessary. The listing includes plug-and-play injector adapters to allow the injectors to plug right into the factory injector harness. No cutting or soldering wires necessary.
The injectors are compatible with all known fuels including e85. The injectors retains a consistent linear flow from 3 bar to 7 bar fuel pressure. Very tuner friendly with fuel trimming down to 1.1ms. The injectors will support over 300whp with correct tuning and fuel type. The injectors utilize a 4-hole disc mist spray pattern with excellent fuel atomization resulting in superb idle conditions. Injectors are dynamically and statically flow-tested on the industry-leading ASNU Classic test equipment. They are then sealed and packed in balanced sets within 1 percent.  Injectors will come with flow sheet with full data specs including injector latency/dead time data for easy tuning. 


  • Flow Matched Sets within ≤ 1% Static and Dynamic flow rates
  • Full Injector Latency Data Provided
  • Tunable to factory Rock solid Idle
  • Excellent Fuel Atomization
  • Direct Plug and Play Fit
  • Fast Response time
  • Consistent performance all the way to 100psi+ Fuel Pressures
  • 2 Year Unlimited Mile Warranty
  • Stainless Steel Internals 
  • Compatible with all known race fuels including E85

Honda/Acura fitment guide:
  • Acura RSX 2004-2009 
  • Acura TSX 2004-2009
  • Honda Civic K20/K24 2002-2012
  • Honda Civic R18 2006-2008


Static Flow Rate (gasoline) @ 43.5PSI (300kPa): 450cc/mi
Coil Resistance: 12.2 Ohms (This high-impedance injector will work with all factory ECM/PCM injector drivers)
Spray Pattern: 30 degree mist (4 hole orifice)
Electrical Connector: USCAR
Fitted with Viton o-rings
Includes lower to injector seal. 

Honda Civic Acura RSX K20 K24 R18 RDX 450cc Fuel Injectors adapters K series SI