The Kia Optima 2.4 is a 2.4L inline-4 from the Theta II family, a naturally aspirated DOHC engine with Dual CVVT used across the Optima and shared with the Hyundai Sonata and Santa Fe. This is a used engine, compression tested where possible before it ships. Output is about 185 hp depending on the year and whether it is the GDI or MPI version, so we confirm the exact engine by VIN rather than overstate one figure.
Because the Theta II 2.4 has a known reliability history in some years, we put extra weight on testing: we compression test where possible and share the results, so you can buy with the engine's health confirmed. Tell us your VIN and we match the correct engine code for your Optima, Sonata, or Santa Fe.
| Item | Details |
|---|---|
| Compression | Checked across cylinders where possible. |
| Engine Code | Matched to your VIN, GDI or MPI. |
| External | Visible condition documented before shipping. |
Your exact year and engine code, confirmed by VIN
Whether your car is the GDI or MPI version
Whether you need a long block or a more complete engine
Mileage and compression results, if available
| Item | Details |
|---|---|
| INCLUDED | The used engine as confirmed with you; confirm long block versus complete at order. |
| NOT INCLUDED | Bolt-on accessories, harness, and fluids, unless confirmed at order. |
| Tools You Need | An engine hoist, a stand, and a professional installer for the swap. |
This Kia Optima 2.4 engine is offered for the following:
| Vehicle | Compatibility |
|---|---|
| Kia Optima 2.4 | Theta II, confirm engine code by VIN |
| Hyundai Sonata and Santa Fe 2.4 | Shared Theta II, confirm by VIN |
This engine is offered for the Kia Optima 2.4 and the shared Hyundai Sonata and Santa Fe 2.4. Because output and fuel system vary by year, confirm your engine code by VIN at order. We disclose the donor details and test results before shipping.
Not sure which 2.4 engine you need? Call (240) 301-0095 with your VIN. Our team confirms the correct engine code and shares the compression results before your order ships.
Quality control for this part includes:
Compression tested across cylinders where possible
Engine code matched to your VIN
Visible external condition documented
Donor details recorded before packaging
Test results shared before you pay
This is a used engine. Given the Theta II history, we lean on compression testing and share the results so you can buy with the engine's health confirmed. The swap is a professional job, so plan for a shop with the right equipment.
| Application | Kia Optima 2.4L (shared Sonata | Santa Fe) |
|---|---|
| Engine | 2.4L inline-4 (Theta II) |
| Power Output | About 185 hp | varies by year |
| Configuration | Naturally aspirated |
| Valvetrain | DOHC with Dual CVVT |
| Fuel System | GDI or MPI by year |
| Transmission Pairing | 6-speed automatic |
| Sold As | Used engine | confirm scope |
| Install | Professional engine swap |
| Shipping | Free to all 50 states | no core charge | freight |
| Warranty | 15 day replacement warranty from delivery |
| Condition | Used | inspected before shipping |
| Sku | vaz400 |
Contact (240) 301-0095 within 15 days of delivery.
