K-series
K20A3
K20A3 (base RSX / EP3)
Displacement
2.0L (1998cc)
Configuration
Inline-4
Power
160 hp (USDM)
Valvetrain
DOHC i-VTEC (economy type - intake cam phasing only)
Aspiration
Naturally aspirated
OBD
OBD2
Years
2002-2005
Factory Fitment
Acura RSX (base), Civic Si (EP3 USDM)
Notes
Economy i-VTEC - does not have the performance cam-switching top end. Frequently confused with K20A2 by first-time buyers; check before purchase.