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  • Australia Wide delivery
  • Changeover basis

Kia Optima G4KJ 2.4L GDI Petrol Engine 2011–2014

$5,300.00 ex. GST

Price based on changeover. Fitting available at extra cost.

  • Competitive engine pricing
  • Engine fitting available in Hallam
  • Australia-wide delivery available
  • Warranty included*
  • Fitment assistance available
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  • Not sure whether this engine fits your car? Send us your VIN, build year and existing engine code before ordering.

Product Short Description

Looking for a replacement Kia Optima G4KJ 2.4L GDI petrol engine for a 2011–2014 model? Hyundai & Kia Engines supplies G4KJ replacement engines for compatible Kia Optima vehicles, with professional engine fitting available from our Hallam, Melbourne workshop and freight throughout Australia.

The G4KJ is a 2.4-litre naturally aspirated petrol engine using gasoline direct injection. This product page is specifically intended for compatible 2011–2014 Optima applications, so the vehicle build date, VIN and current engine code should be confirmed before purchase.

12-month warranty

On all engines

shipping

Australia-wide

Expert fitting

Dandenong workshop

10+ years exp.

Hyundai & Kia

Kia Optima G4KJ Engine Overview

Kia Optima G4KJ 2.4L Replacement Engine

The G4KJ 2.4L GDI petrol engine belongs to Hyundai and Kia’s Theta engine family and is used across several Hyundai and Kia applications.
In compatible Kia Optima models, the G4KJ combines:
  • 2.4L displacement
  • Naturally aspirated operation
  • Inline four-cylinder configuration
  • Gasoline direct injection
  • DOHC cylinder-head design
Because the G4KJ engine code also appears in later Optima applications and other Hyundai/Kia vehicles, the year range should not be ignored when choosing a replacement engine.

This page should be used as the starting point for compatible 2011–2014 Kia Optima vehicles fitted with the G4KJ engine.

Kia Optima G4KJ Engine Specifications

Specification Details
Engine Code G4KJ
Engine Family Hyundai/Kia Theta
Engine Capacity 2.4L
Fuel Type Petrol
Fuel System GDI – Gasoline Direct Injection
Aspiration Naturally Aspirated
Configuration Inline 4-Cylinder
Valve Layout DOHC, 16-Valve
Vehicle Application Kia Optima
Target Application Compatible 2011–2014 Vehicles
Engine Fitting Available
Workshop Hallam, Melbourne
Delivery Australia-Wide
Warranty Refer to current product warranty conditions

Does This G4KJ Engine Fit My 2011–2014 Kia Optima?

Confirm the Vehicle Before Ordering

The year range is important when purchasing a replacement Optima engine.

Before ordering, confirm:
  • Vehicle VIN
  • Build month and year
  • Existing G4KJ engine code
  • Kia Optima generation
  • Vehicle variant
  • Transmission
  • Original intake and exhaust components
  • Sensors and wiring
  • Ancillary equipment

Important

This page is specifically for compatible 2011–2014 G4KJ applications.

If your Kia Optima is from 2015–2020, use the later G4KJ product page rather than assuming the earlier and later complete engine assemblies are identical.

The engine code and VIN should still be confirmed.

Send us your VIN and engine code

Check Compatibility

Need Us to Fit Your Hyundai & Kia Engine?

Hyundai & Kia Engines offers professional engine fitting from our workshop in Hallam, Melbourne.

Our team specialises in Hyundai and Kia engines, allowing customers to purchase an engine and arrange installation through the same business.
Engine fitting can include removal of the existing engine, installation of the replacement unit and associated work depending on your vehicle and the engine being supplied.
Contact us with your vehicle details for current fitting pricing and availability.
Get An Engine Fitting Quote

Hyundai & Kia Engines Delivered Across Australia

You do not need to be located in Melbourne to purchase your replacement engine from Hyundai & Kia Engines.
We can arrange engine freight to customers, automotive repairers and workshops throughout Australia, including:
  • Melbourne
  • Sydney
  • Brisbane
  • Adelaide
  • Perth
  • Canberra
  • Hobart
  • Regional Victoria
  • Regional NSW
  • Regional Queensland
  • Regional South Australia
  • Regional Western Australia

Warranty on Your Hyundai & Kia Engine

Your engine is supplied subject to the warranty conditions applicable to the particular engine purchased.

Before installation, customers and installers should review the applicable warranty requirements and ensure associated vehicle systems are checked where necessary.

Our team can also assist with:
  • Engine identification
  • Fitment questions
  • Installation enquiries
  • Warranty information
  • Freight enquiries
  • General technical questions relating to the engine supplied
For full details, refer to our current warranty terms or contact our team before purchasing.

Kia Optima G4KJ 2011–2014 FAQs

Is this engine specifically for 2011–2014 Kia Optima models?
This page is intended for compatible 2011–2014 G4KJ applications. Exact fitment should still be confirmed using the VIN, build date and existing engine code.
Yes. It is a 2.4L petrol engine using gasoline direct injection.
No. The G4KJ is naturally aspirated.
Do not assume the earlier and later complete assemblies are interchangeable. Vehicle-specific compatibility should be confirmed first.
The VIN and build date help determine the exact vehicle application and reduce the risk of supplying an unsuitable engine.
Yes. Professional engine installation is available from our Hallam workshop.
Yes. Australia-wide freight is available.

2011–2014 vs 2015–2020 Kia Optima G4KJ Engines

Why We Have Separate Product Pages

Although both Optima ranges can use the G4KJ 2.4L GDI engine code, production changes and vehicle-specific components can vary.

Possible differences may involve:

  • Sensors
  • Wiring
  • Intake components
  • Exhaust components
  • Ancillary equipment
  • Mounting arrangements
  • Vehicle electronics
  • Production specifications

For this reason, we recommend purchasing the engine listed for the correct vehicle period rather than selecting a G4KJ based on engine code alone.

Your Optima is 2011–2014?

Continue with this product.

Your Optima is 2015–2020?

View:

Kia Optima G4KJ 2.4L GDI Petrol Engine 2015–2020

Signs Your Kia Optima Engine May Need Replacement

A serious internal engine problem may present through symptoms such as:
  • Excessive engine oil consumption
  • Persistent knocking or tapping
  • Low cylinder compression
  • Engine misfires
  • Significant loss of power
  • Oil-pressure warning lights
  • Repeated overheating
  • Excessive exhaust smoke
  • Coolant and oil contamination
  • Metal contamination in the engine oil
  • Internal bearing damage
  • Piston or cylinder damage
  • Cylinder-head or engine-block damage
These symptoms should be properly diagnosed before purchasing a replacement engine.
Some faults may originate from supporting vehicle systems rather than requiring the complete engine to be replaced.

Kia Optima G4KJ Compatibility

Vehicle Fitment Information

This engine is intended for compatible 2011–2014 Kia Optima vehicles fitted with the G4KJ 2.4L GDI petrol engine.

Compatibility can vary according to:
  • Vehicle generation
  • Build date
  • Engine specification
  • Market specification
  • Ancillary components
  • Original engine configuration

Important

Do not rely on vehicle model and engine capacity alone when ordering.
Where possible, provide your VIN and existing engine code so we can assist with confirming compatibility.

What to Check Before Installing a Replacement Engine

Replacing an engine should involve more than simply removing the damaged engine and fitting another unit.
Where an engine has suffered a major failure, we recommend checking the systems that may have contributed to the original problem.
These can include:
  • Cooling system
  • Radiator condition
  • Thermostat
  • Oil supply and lubrication system
  • Intake system
  • Fuel system
  • Engine mounts
  • Hoses and connections
  • Associated sensors and components
Identifying the cause of the original engine failure can help protect the replacement engine from suffering the same problem.
This section is something I would definitely include because it makes Hyundai & Kia Engines look much more knowledgeable than a normal ecommerce parts seller.

Why Buy From Hyundai & Kia Engines?

Hyundai & Kia Engine Specialists

Hyundai & Kia Engines specialises in replacement engines specifically for Hyundai and Kia vehicles.

From our Hallam workshop, we supply engines to private vehicle owners, mechanics and automotive workshops throughout Australia.

Why customers choose us:

  • Specialists in Hyundai and Kia engines
  • Highly competitive engine pricing
  • Professional engine fitting available
  • Hallam, Melbourne workshop
  • Australia-wide engine freight
  • Assistance identifying the correct engine
  • Warranty and technical support
  • Large range of Hyundai and Kia replacement engines

Get In Touch With Us

Location

3 David Lee Rd, Hallam VIC 3803, Australia

Email

info@iloadengine.com.au

Phone

(03) 8900 6005
0470 394 187

Get Direction





Kia Optima G4KJ Engine Overview

Kia Optima G4KJ 2.4L Replacement Engine

The G4KJ 2.4L GDI petrol engine belongs to Hyundai and Kia’s Theta engine family and is used across several Hyundai and Kia applications.

In compatible Kia Optima models, the G4KJ combines:

  • 2.4L displacement
  • Naturally aspirated operation
  • Inline four-cylinder configuration
  • Gasoline direct injection
  • DOHC cylinder-head design

Because the G4KJ engine code also appears in later Optima applications and other Hyundai/Kia vehicles, the year range should not be ignored when choosing a replacement engine.

This page should be used as the starting point for compatible 2011–2014 Kia Optima vehicles fitted with the G4KJ engine.

Kia Optima G4KJ Engine Specifications



Specification

Details

Engine Code
G4KJ

Engine Family
Hyundai/Kia Theta

Engine Capacity
2.4L

Fuel Type
Petrol

Fuel System
GDI – Gasoline Direct Injection

Aspiration
Naturally Aspirated

Configuration
Inline 4-Cylinder

Valve Layout
DOHC, 16-Valve

Vehicle Application
Kia Optima

Target Application
Compatible 2011–2014 Vehicles

Engine Fitting
Available

Workshop
Hallam, Melbourne

Delivery
Australia-Wide



Warranty
Refer to current product warranty conditions

Does This G4KJ Engine Fit My 2011–2014 Kia Optima?

Confirm the Vehicle Before Ordering

The year range is important when purchasing a replacement Optima engine.

Before ordering, confirm:

  • Vehicle VIN
  • Build month and year
  • Existing G4KJ engine code
  • Kia Optima generation
  • Vehicle variant
  • Transmission
  • Original intake and exhaust components
  • Sensors and wiring
  • Ancillary equipment

Important

This page is specifically for compatible 2011–2014 G4KJ applications.

If your Kia Optima is from 2015–2020, use the later G4KJ product page rather than assuming the earlier and later complete engine assemblies are identical.

The engine code and VIN should still be confirmed.

Send us your VIN and engine code



Check Compatibility

Need Us to Fit Your Hyundai & Kia Engine?

Hyundai & Kia Engines offers professional engine fitting from our workshop in Hallam, Melbourne.

Our team specialises in Hyundai and Kia engines, allowing customers to purchase an engine and arrange installation through the same business.

Engine fitting can include removal of the existing engine, installation of the replacement unit and associated work depending on your vehicle and the engine being supplied.

Contact us with your vehicle details for current fitting pricing and availability.



Get An Engine Fitting Quote


Hyundai & Kia Engines Delivered Across Australia

You do not need to be located in Melbourne to purchase your replacement engine from Hyundai & Kia Engines.

We can arrange engine freight to customers, automotive repairers and workshops throughout Australia, including:



  • Melbourne


  • Sydney


  • Brisbane


  • Adelaide


  • Perth


  • Canberra


  • Hobart


  • Regional Victoria


  • Regional NSW


  • Regional Queensland


  • Regional South Australia


  • Regional Western Australia

Warranty on Your Hyundai & Kia Engine

Your engine is supplied subject to the warranty conditions applicable to the particular engine purchased.

Before installation, customers and installers should review the applicable warranty requirements and ensure associated vehicle systems are checked where necessary.

Our team can also assist with:



  • Engine identification


  • Fitment questions


  • Installation enquiries


  • Warranty information


  • Freight enquiries


  • General technical questions relating to the engine supplied

For full details, refer to our current warranty terms or contact our team before purchasing.

Kia Optima G4KJ 2011–2014 FAQs

Is this engine specifically for 2011–2014 Kia Optima models?





This page is intended for compatible 2011–2014 G4KJ applications. Exact fitment should still be confirmed using the VIN, build date and existing engine code.

Yes. It is a 2.4L petrol engine using gasoline direct injection.

No. The G4KJ is naturally aspirated.

Do not assume the earlier and later complete assemblies are interchangeable. Vehicle-specific compatibility should be confirmed first.

The VIN and build date help determine the exact vehicle application and reduce the risk of supplying an unsuitable engine.

Yes. Professional engine installation is available from our Hallam workshop.

Yes. Australia-wide freight is available.

2011–2014 vs 2015–2020 Kia Optima G4KJ Engines

Why We Have Separate Product Pages

Although both Optima ranges can use the G4KJ 2.4L GDI engine code, production changes and vehicle-specific components can vary.

Possible differences may involve:

  • Sensors
  • Wiring
  • Intake components
  • Exhaust components
  • Ancillary equipment
  • Mounting arrangements
  • Vehicle electronics
  • Production specifications

For this reason, we recommend purchasing the engine listed for the correct vehicle period rather than selecting a G4KJ based on engine code alone.

Your Optima is 2011–2014?

Continue with this product.

Your Optima is 2015–2020?

View:

Kia Optima G4KJ 2.4L GDI Petrol Engine 2015–2020

Signs Your Kia Optima Engine May Need Replacement

A serious internal engine problem may present through symptoms such as:



  • Excessive engine oil consumption


  • Persistent knocking or tapping


  • Low cylinder compression


  • Engine misfires


  • Significant loss of power


  • Oil-pressure warning lights


  • Repeated overheating


  • Excessive exhaust smoke


  • Coolant and oil contamination


  • Metal contamination in the engine oil


  • Internal bearing damage


  • Piston or cylinder damage


  • Cylinder-head or engine-block damage

These symptoms should be properly diagnosed before purchasing a replacement engine.

Some faults may originate from supporting vehicle systems rather than requiring the complete engine to be replaced.

Kia Optima G4KJ Compatibility

Vehicle Fitment Information

This engine is intended for compatible 2011–2014 Kia Optima vehicles fitted with the G4KJ 2.4L GDI petrol engine.

Compatibility can vary according to:



  • Vehicle generation


  • Build date


  • Engine specification


  • Market specification


  • Ancillary components


  • Original engine configuration

Important

Do not rely on vehicle model and engine capacity alone when ordering.

Where possible, provide your VIN and existing engine code so we can assist with confirming compatibility.

What to Check Before Installing a Replacement Engine

Replacing an engine should involve more than simply removing the damaged engine and fitting another unit.

Where an engine has suffered a major failure, we recommend checking the systems that may have contributed to the original problem.

These can include:



  • Cooling system


  • Radiator condition


  • Thermostat


  • Oil supply and lubrication system


  • Intake system


  • Fuel system


  • Engine mounts


  • Hoses and connections


  • Associated sensors and components

Identifying the cause of the original engine failure can help protect the replacement engine from suffering the same problem.

This section is something I would definitely include because it makes Hyundai & Kia Engines look much more knowledgeable than a normal ecommerce parts seller.

Why Buy From Hyundai & Kia Engines?

Hyundai & Kia Engine Specialists

Hyundai & Kia Engines specialises in replacement engines specifically for Hyundai and Kia vehicles.

From our Hallam workshop, we supply engines to private vehicle owners, mechanics and automotive workshops throughout Australia.

Why customers choose us:



  • Specialists in Hyundai and Kia engines


  • Highly competitive engine pricing


  • Professional engine fitting available


  • Hallam, Melbourne workshop


  • Australia-wide engine freight


  • Assistance identifying the correct engine


  • Warranty and technical support


  • Large range of Hyundai and Kia replacement engines

Get In Touch With Us


Location

3 David Lee Rd, Hallam VIC 3803, Australia



Email

info@iloadengine.com.au



Phone

(03) 8900 6005

0470 394 187



Get Direction

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