Engine Specifications
| Specification |
Details |
| Engine Code (Part Code) |
G4KJ (Theta II GDI – High Mount Starter) |
| Engine Family |
Hyundai / Kia Theta II Engine Family |
| Engine Size |
2.4L (2,359 cc) Inline 4-Cylinder |
| Aspiration & Fuel |
Naturally Aspirated / Direct Injection (GDI) |
| Mileage / Condition |
0 KM (Brand-New) |
| Parts Included |
Complete Bare Long Block (Head & Block Assembly) |
| Modification Notes |
Direct Bolt-On OEM Replacement (High Mount Starter Block) |
| Core Charge |
$0 (No Core Return Required) |
Product Overview & Fitment Highlights
Restore your vehicle’s performance with a brand-new 2.4L G4KJ Theta II GDI long block engine (High Mount Starter)—built directly to factory OEM specifications and ready for installation.
Why Choose This Engine?
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Zero-Mileage Reliability: Brand-New (0 KM / 0 Miles).
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Direct OEM Fitment: Factory bolt-on compatibility for 2.4L High Mount starter configurations—no custom fabrication required.
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No Core Return: Keep your old engine block! We do not charge a core fee or require old engine returns.
General Vehicle Fitment Reference
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Engine Model: G4KJ 2.4L GDI Engine (High-Mount Starter Casting)
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Common Applications: Fits 2.4L GDI models including Hyundai Sonata, Tucson, Santa Fe, and Kia Optima, Sportage, Sorento (specific trim years using the high-mount starter position).
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VIN Verification Recommended: Because G4KJ engines come in both High-Mount and Low-Mount starter block castings, please call us at 403.471.7150 or send us your VIN (Vehicle Identification Number) to verify your starter placement before shipping!
Components Included vs. Accessories to Transfer
To ensure a seamless engine replacement, please review what is included with your new bare long block:
| Included (Factory Assembled) |
Not Included (Transfer From Original Engine) |
| Brand-New Engine Block |
Intake & Exhaust Manifolds |
| Brand-New Cylinder Head Assembly |
High-Pressure Fuel Pump, Injectors & Fuel Rail |
| Internal Pistons, Rods, Crankshaft & Bearings |
Alternator, Starter, AC Compressor & Steering Pump |
| Timing Chain Kit & Valve Cover (Pictured) |
Engine Wiring Harness, VVT Solenoids & Sensors |
|
ECU / PCM Computer |
Compatible Models & Years (Gen 2 / High-Mount Setup)
| Model |
Year Range |
Drivetrain |
Notes |
| Hyundai Sonata |
2015 – 2019 |
FWD |
Gen 2 / High-mount setup |
| Hyundai Santa Fe / Sport |
2017 – 2020 |
FWD / AWD |
Gen 2 / High-mount setup |
| Hyundai Tucson |
2019 – 2021 |
FWD / AWD |
Gen 2 / High-mount setup |
| Kia Optima |
2016 – 2020 |
FWD |
Gen 2 / High-mount setup |
| Kia Sorento |
2017 – 2020 |
FWD / AWD |
Gen 2 / High-mount setup |
| Kia Sportage |
2017 – 2022 |
FWD / AWD |
Gen 2 / High-mount setup |
Unsure About Compatibility?
Vehicle options, trims, and engine splits can vary. Before placing your order, please contact us with your VIN (Vehicle Identification Number) or send it to us before ordering. Our team will verify exact block, head, and sensor compatibility for your specific vehicle.
Installation & Peripheral Swap Notice:
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Sensor & Harness Swaps: Depending on your vehicle’s exact market, trim, and emission specs, your installer may need to transfer your original engine’s sensors, intake manifold, wiring harness, or oil pan to match your factory ECU.
Disclaimer: This compatibility table is provided for reference purposes only. It is the buyer/installer’s responsibility to confirm that the engine code listed in the specifications above matches their existing vehicle setup prior to installation.
