Engine Honda K23A

The 2.3-liter gasoline turbo engine Honda K23A or K23A1 was assembled from 2006 to 2012 and was exclusively installed only on the first generation Acura RDX luxury crossover. This power unit is famous for its reliability and excellent dynamic performance.

The K-series line also includes internal combustion engines: K20A and K24A.

The engine was installed on:

  • Acura RDX 1 (TB) in 2006 – 2012.


Production years 2006-2012
Displacement, cc 2300
Fuel system injector
Power output, hp 240
Torque output, Nm 350
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 86
Piston stroke, mm 99
Compression ratio 8.8
Features DOHC, intercooler
Hydraulic lifters no
Timing drive chain
Phase regulator i-VTEC
Turbocharging MHI TD04HL-15T
Recommended engine oil 5W-30
Engine oil capacity, liter 5.2
Fuel type petrol
Euro standards EURO 4
Fuel consumption, L/100 km (for Acura RDX 2007)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 170

Disadvantages of the Honda K23A engine

  • This turbo engine is very reliable and has virtually no congenital problems.
  • If you neglect the oil change schedule, the turbine will quickly fail.
  • On a run of more than 100,000 km, the timing chain often stretches and starts to rattle.
  • The engine mounts and the front crankshaft oil seal have a low resource.
  • There are no hydraulic lifters and valve clearances need to be adjusted every 90,000 km.

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