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The available engine options for the Focus are:
- A.T. DOHC (Zetec) (ID 1S4P-DA)
- A.T. SOHC ID RM1S4P-CA
- A.T. SOHC ID 1S4Z-CARM
- A.T. SOHC ID 1S4P-CA
- A.T. (2.0L, DOHC)
- A.T. 2.3L (PZEV, VIN Z) (ID 3S4P-AA)
- A.T. 2.0L DOHC (ID 3S4P-DA)
- A.T. 2.0L SOHC (ID 3S4P-CA)
- M.T. DOHC ID YS4R-WA
- M.T. DOHC ID YS4R-NA
- M.T. DOHC ID XS4R-WC
- M.T. SOHC Sdn & SW ID XS4R-DE
- M.T. SOHC Sdn & SW ID XS4R-DD
- M.T. SOHC Sdn & SW ID XS4R-DA
- M.T. SOHC Cpe.
- M.T. 2.3L (PZEV, VIN Z)
- M.T. 2.0L DOHC 6 spd (SVT)
- M.T. 2.0L DOHC 5 spd
- M.T. 2.0L SOHC
- (2.0L) VIN 3 (8th digit, DOHC) intake ID 988F- smooth seam runner
- (2.0L) VIN 3 (8th digit, DOHC) intake ID WS4E- raised seam runner
- (2.0L) VIN P (8th digit, SOHC)
- (2.0L) VIN 5 (8th digit, SVT, DOHC)
- 2.3L (VIN Z, 8th digit, PZEV)
- 2.0L VIN 5 (8th digit, SVT, DOHC)
- 2.0L VIN 3 (8th digit, DOHC) intake ID 988F- smooth seam runner
- 2.0L VIN 3 (8th digit, DOHC) intake ID WS4E- raised seam runner
- 2.0L VIN P (8th digit, SOHC)
- 2.3L (VIN Z, 8th digit, DOHC)
- 2.0L (VIN N, 8th digit, DOHC)
- (2.0L, VIN N, 8th digit, DOHC) std emis
- (2.0L, VIN N, 8th digit, DOHC) PZEV evaporative emissions
- A.T. DOHC (Zetec) ID XS4P-DF
- A.T. DOHC (Zetec) ID XS4P-DE
- A.T. DOHC (Zetec) ID XS4P-D2E
- A.T. SOHC ID XS4P-CF
- A.T. SOHC ID XS4P-CE
- A.T. SOHC ID XS4P-C2E
- M.T. DOHC
- A.T. DOHC (Zetec) ID 1S4P-DA
- M.T. DOHC 6 spd (SVT)
- M.T. DOHC 5 spd
- M.T. SOHC Cpe. (5 spd)
- M.T. 2.0L DOHC 5 spd ID YS4R-NA
- M.T. 2.0L DOHC 5 spd ID 2S4R-NA
- M.T. 2.0L DOHC 5 spd ID 1S4R-NC
- M.T. 2.0L DOHC 5 spd ID 1S4R-NB
- M.T. 2.0L SOHC Sdn & SW ID XS4R-DE
- M.T. 2.0L SOHC Sdn & SW ID XS4R-DD
- M.T. 2.0L SOHC Sdn & SW ID XS4R-DA
- M.T. 2.0L SOHC Cpe. (5 spd)
- A.T. 2.0L DOHC ID 3S4P-EB
- A.T. 2.0L DOHC ID 3S4P-DA
- A.T. 2.0L DOHC ID 3S4P-CA
- A.T. 2.0L DOHC ID 1S4P-DA
- A.T. 2.0L SOHC ID 3S4P-CA
- A.T. 2.0L SOHC ID RM1S4P-CA
- A.T. 2.0L SOHC ID 1S4Z-CARM
- A.T. 2.0L SOHC ID 1S4P-CA
- M.T. 2.0L & 2.3L
- M.T. (2.0L) 16" & 17" whl (3.82 ratio)
- M.T. (2.0L) 15" whl (3.56 ratio)
- A.T. (2.0L, DOHC) Sdn
- A.T. (2.0L, DOHC) Cpe

