2018 Kia Optima 2.4L GDI Engine

Engine overview

Common vehicle applications

2018 Kia Optima LX, S and EX applications equipped with the naturally aspirated 2.4L GDI gasoline engine.

Interchange notes

Trim, transmission, intake, exhaust, wiring, high-pressure fuel-system components, sensors, mounts and emissions equipment must match. Do not confuse with 1.6L or 2.0L turbo applications.

VIN verification

Confirm VIN, trim, engine identification, transmission, production date and emissions certification before ordering.

Additional notes

Draft application. Verify the stamped engine code and emissions configuration before publication.

Compatibility notice

Engine compatibility can vary by model year, production date, emissions package, transmission, drivetrain, wiring, sensors, intake system and engine code. Always verify the complete VIN, engine code and professional interchange information before purchasing a replacement engine.

Looking for a Replacement Kia Engine?

KarKing Auto specializes in quality used and replacement Kia engines for many popular Kia applications.

Verify the complete VIN, production date, drivetrain and physical engine code before ordering a replacement engine.

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Specifications

Engine code: G4KJ
Displacement: 2.4 liters / approximately 2,359 cc
Cylinders: 4
Configuration: Inline-four
Valvetrain: DOHC, 16 valves, dual continuously variable valve timing
Aspiration: Naturally aspirated
Fuel system: Gasoline direct injection
Horsepower range: 185 hp @ 6,000 rpm
Torque range: 178 lb-ft @ 4,000 rpm
Timing system: Timing chain
Model years: 2018–2018