Description
G4JS 2.4L Theta Bare Engine / Long Block – Hyundai & Kia Replacement Engine
This G4JS bare engine is a complete long block assembly built to OEM standards for Hyundai and Kia vehicles. Belonging to the widely used Theta engine family, the 2.4‑litre DOHC unit with CVVT gives your vehicle a factory‑fresh start, saving you time and money compared to repairing a worn or seized engine.
Vehicle Compatibility
The G4JS 2.4L engine was installed in a wide range of mid‑size cars, SUVs and MPVs. Always verify your engine code “G4JS” before purchase. Common applications include:
- Hyundai Sonata 2.4L (2005 – 2010, NF)
- Hyundai Santa Fe 2.4L (2006 – 2012, CM)
- Hyundai Tucson / ix35 2.4L (2004 – 2015)
- Hyundai Grandeur / Azera 2.4L (2005 – 2011, TG)
- Kia Optima / Magentis 2.4L (2005 – 2010, MG)
- Kia Sorento 2.4L (2009 – 2014, XM)
- Kia Sportage 2.4L (2004 – 2010, KM)
- Other Hyundai / Kia models originally fitted with the G4JS engine code
Please confirm your engine code is “G4JS” before ordering. This is a bare engine assembly; all external components must be transferred from your original engine.
Technical Specifications
| Engine Code | G4JS (2.4L Theta) |
| Displacement | 2.4 Litre (2359 cc) |
| Cylinder Configuration | Inline 4-cylinder |
| Valvetrain | 16-valve DOHC with CVVT (Continuously Variable Valve Timing) |
| Bore × Stroke | 88 mm × 97 mm |
| Compression Ratio | 10.5:1 |
| Fuel System | Multi‑Port Fuel Injection (MPI) |
| Fuel Type | Petrol / Gasoline |
| Engine Type | Bare Engine / Long Block |
| Condition | Brand New |
What’s Included
- Complete cylinder block with pistons, rings, crankshaft and connecting rods
- Assembled cylinder head with valves, springs, camshafts and CVVT actuator
- Oil pan and valve cover
- Timing chain cover and timing chain kit installed
- Water pump and oil pump pre‑installed
Note: This is a bare engine / long block assembly. Intake manifold, exhaust manifold, fuel injectors, throttle body, alternator, starter, engine wiring harness, ECU and all external sensors are NOT included. They must be transferred from your original engine.
Why Choose This G4JS Bare Engine
- 100% brand new – never remanufactured or refurbished
- Factory compression and oil pressure tested
- OEM‑grade materials and machining tolerances
- Packed securely in a wooden crate for safe international freight
- Comprehensive warranty – check our warranty page for details
- Fast global shipping to port or door
If you are looking for a G4JS engine for sale or a Hyundai / Kia 2.4 replacement engine, this premium long block provides a factory‑fresh start for your vehicle. Order now for a reliable, direct‑fit solution.
More Hyundai & Kia Engines + Quick Contact
- Browse our Hyundai/Kia catalog: View the full Hyundai & Kia engine collection to find other bare engines and long blocks.
- Need help? Contact us directly on WhatsApp for fast compatibility checks and shipping quotes.









