G4KJ Remanufactured Engine
The G4KJ remanufactured engine is a professionally
remanufactured 2.4L L4 engine designed for select Hyundai and Kia
applications. This engine is associated with the Hyundai and Kia
Theta-family 2.4L platform and is listed for Hyundai Sonata and
Kia Optima applications in the supplied fitment information.
Each engine is completely disassembled, thoroughly cleaned, inspected,
precision machined and reassembled as part of a comprehensive
remanufacturing process. Required components are replaced during
rebuilding, helping restore the engine’s critical operating systems
and dimensions.
With a 2.4L displacement, 4-cylinder configuration, DOHC
cylinder head and 16-valve design, this G4KJ engine provides
a complete replacement-engine option for compatible Hyundai and Kia
vehicles.
Hyundai Kia G4KJ 2.4L Engine Highlights
- G4KJ 2.4L inline 4-cylinder engine
- 2.4L displacement
- DOHC 16-valve configuration
- Aluminum engine block
- Aluminum cylinder head
- Gasoline fuel type
- Premium-grade engine specification
- Fully disassembled and professionally remanufactured
- Precision machining and component inspection
- Required new components installed during rebuilding
- SIM tested after final assembly
Professional G4KJ Engine Remanufacturing Process
A quality Hyundai G4KJ remanufactured engine goes
through a structured rebuilding process rather than simply receiving
a few replacement parts. Every stage is designed to prepare the
engine for reliable operation in its intended application.
1. Complete Disassembly and Deep Cleaning
The engine is completely disassembled before remanufacturing begins.
Components are thoroughly cleaned to remove oil, carbon, dirt and
other contaminants. Aluminum components are thermally cleaned where
applicable.
2. Detailed Component Inspection
Components are visually inspected for wear, damage and other
conditions that could affect serviceability. Magnaflux testing is
used on appropriate metal components to help identify microscopic
cracks and fissures.
3. Precision Machining and New Parts
Required machining operations are performed to restore critical
engine surfaces and dimensions. Deck surfaces are CNC machined,
while required replacement components are installed during assembly.
Depending on the engine and component condition, new parts may include
bearings, pistons, piston rings, lifters, oil pump, gaskets, Viton
valve seals, freeze plugs, galley plugs and timing components.
4. Final Assembly and SIM Testing
After reassembly, the engine is SIM tested. The cooling and oil
systems are pressurized and the crankshaft is spun at high RPM to
help verify compression, oil pressure, cooling-system pressure and
overall build quality.
G4KJ Engine Vehicle Fitment
This G4KJ replacement engine is listed for the
following Hyundai and Kia 2.4L applications. Always verify the
original engine code and application details before ordering.
| Year |
Make |
Model |
Engine |
| 2011–2014 |
Hyundai |
Sonata |
L4 2.4L / 2359cc |
| 2011–2015 |
Kia |
Optima |
L4 2.4L / 2359cc |
Important: Fitment should be confirmed before purchase.
Engine compatibility may depend on the exact model year, engine code,
cylinder-head casting and other application-specific details.
How to Identify a G4KJ Engine
Correct engine identification is important when selecting a replacement
engine. The supplied product information identifies this engine using
the G4KJ engine code and associated cylinder-head
casting information.
- Engine Code: G4KJ
- Block Casting: G4KJ
- Hyundai Head Casting: 2G560
- Kia Head Casting: Theta-2 GK#
- Inline Head Cast: 22111-2G560 or Theta-2 GK#
Casting information can help with engine identification, but it should
always be checked against the complete vehicle application before ordering.
G4KJ 2.4L Engine Specifications
| Engine Code |
G4KJ |
| Engine |
Hyundai Kia G4KJ |
| Displacement |
2.4L / 2359cc |
| Engine Type |
2.4L L4 DOHC 16V |
| Number of Cylinders |
4 |
| Number of Valves |
16 |
| Head Type |
DOHC |
| Fuel Type |
Gasoline |
| Engine Block Material |
Aluminum |
| Cylinder Head Material |
Aluminum |
| Block Casting |
G4KJ |
| Hyundai Head Casting |
2G560 |
| Kia Head Casting |
Theta-2 GK# |
| Inline Head Casting |
22111-2G560 / Theta-2 GK# |
| Weight |
250 lbs |
| Dimensions |
38 × 38 × 38 in |
Hyundai Sonata 2.4L Replacement Engine
If your Hyundai Sonata requires a complete engine replacement, this
Hyundai 2.4L replacement engine is listed for
2011–2014 Sonata applications equipped with the 2.4L engine.
Before purchasing a Hyundai Sonata 2.4L engine,
compare the original engine code, cylinder-head casting and vehicle
application with the information provided above.
Kia Optima 2.4L Replacement Engine
The Kia 2.4L replacement engine is also listed for
2011–2015 Kia Optima applications with the 2.4L four-cylinder engine.
Verify the original engine identification before ordering.
If your Kia Optima is equipped with the G4KJ engine, confirm the engine
code and applicable casting information to help ensure proper compatibility.
G4KJ Theta 2.4L Engine
The G4KJ is identified in the supplied specifications as a
2.4L L4 DOHC 16-valve engine. The product data also
references Hyundai and Kia Theta-family cylinder-head casting information.
Because engine specifications can vary by vehicle and model year,
always use the exact engine code and vehicle application when selecting
a replacement.
Looking for a G4KJ Replacement Engine?
Selecting the correct G4KJ replacement engine starts
with accurate vehicle and engine identification. Year, make, model,
engine code and casting information should all be considered before
purchasing.
This remanufactured G4KJ engine goes through cleaning, inspection,
machining, assembly and SIM testing as part of the rebuilding process,
providing a complete replacement powertrain option for compatible
applications.
Need Help Confirming G4KJ Fitment?
Engine compatibility can depend on the exact vehicle application,
engine code and casting numbers. If you are unsure whether this
G4KJ remanufactured engine is the correct replacement
for your vehicle, contact Mechron Tech before ordering.
Contact Mechron Tech for application and
engine-identification assistance.
