R-series
R18A1
R18A1 (8th gen Civic)
Displacement
1.8L (1799cc)
Configuration
Inline-4
Power
140 hp (USDM)
Torque
128
Valvetrain
SOHC i-VTEC (economy)
Aspiration
Naturally aspirated
OBD
OBD2
Years
2006-2011
Factory Fitment
Civic DX/LX/EX (FA/FG)
Notes
Economy engine; relevant to maintenance guides rather than performance swaps.