K-series
K20A1
K20A1 DOHC i-VTEC
Displacement
2.0L (1998 cc)
Configuration
Inline-4
Power
156-158 hp (116-118 kW) at 6500 rpm (JDM)
Torque
139-140 lb-ft (188-190 N-m) at 4000 rpm
Compression
9.7:1 to 9.8:1
Bore × Stroke
86.0 mm x 86.0 mm
Valvetrain
DOHC i-VTEC
Aspiration
Naturally aspirated
Fuel System
PGM-FI (multi-point)
Redline
6500-6800 rpm
Years
2001-2006
Factory Fitment
Honda Stream (FWD and AWD, JDM)
Notes
Economy-oriented JDM variant fitted to the Stream MPV in both front- and all-wheel-drive form.
Swaps using the K20A1
Engine
Verified
Expert
K20 Engine Swap
Civic EP3
(Seventh Generation)
→
Civic EG
(Fifth Generation)
,
Civic EK
(Sixth Generation)
Guides mentioning the K20A1
Expert
40-60 hours (multi-week project)
K20A2 Swap into a 1996-2000 Honda Civic (EK): Mounts, Manual Conversion, Cooling and Axles
Expert
20-40 hours over several sessions, plus dyno tuning time
Two-Stage Dry Nitrous Install and KPro Wiring for a K-Series Honda
Moderate
4-5 hours
Acura RSX (DC5) Custom 8-Point Engine Ground Kit
Difficult
4-8 hours
Fabricating Custom Steel Brake Hard Lines and Relocating the Proportioning Valve (Honda EG/EK/DC2)
Moderate
1.5-3 hours
Hondata Intake Manifold Gasket (IMG) Installation on the Acura RSX (K20)
Expert
20-40 hours of active work spread over several weeks (weather-dependent curing)
Building a Custom Fiberglass Front Lip and Splitter Base (7th-Gen Civic)
Difficult
3-6 hours
K-Series Swap Charge Harness Wiring (Civic EG/EK, Integra DC)
Expert
8-12 hours
Building a K-Series Swap Conversion Wiring Harness for the Honda Civic (EG)
Easy
30-45 minutes
Acura RSX / Honda Civic Si (K20) Engine Oil and Filter Change
Moderate
1-2 hours
Fitting an HKS Racing Suction Reloaded Intake Kit to the Honda Civic Type R (FN2)
Moderate
30-60 minutes
Honda/Acura K-Series Cylinder Compression Test
Expert
Multiple weekends (25-40 hours)
Building a K24/K20A2 "Frankenstein" Hybrid Engine