- Open • Mon–Fri workshop in Dandenong
- 8 Hammond Rd, Dandenong VIC 3175
Price based on changeover. Fitting available at extra cost.
🛡️
12-month warranty
On all engines
Free shipping
Australia-wide
🔧
Expert fitting
Dandenong workshop
🏆
10+ years exp.
Hyundai & Kia
The Kia Optima G4KJ is a reconditioned 2.4L GDI petrol engine, supplied from $4,200 with a 12-month product warranty and free Australia-wide shipping. Fitting is available at our Dandenong workshop.
| Engine code | G4KJ |
|---|---|
| Capacity | 2.4L |
| Fuel system | GDI petrol |
| Engine family | Theta II |
| Condition | Reconditioned & tested |
| Fits | Kia Optima |
| Warranty | 12 months |
| Delivery | Australia-wide |
Looking for a reliable replacement Kia Optima G4KJ engine? Hyun Engines supplies professionally tested and quality-assured G4KJ 2.4L GDI petrol engines for Kia Optima and selected Hyundai-Kia vehicles throughout Australia.
Hyun Engines specialises in Hyundai and Kia replacement engines. Our experienced team understands the common issues associated with Theta II engines and can help identify the correct replacement engine for your vehicle.
We supply engines to workshops, dealerships, insurance repairers, and private customers throughout Australia.
Our commitment to quality control, testing, and customer service has made us a trusted supplier of Hyundai and Kia engines nationwide.
We can arrange fast freight delivery Australia-wide, including:
Contact us today for stock availability, freight pricing, and delivery estimates.
A 12-month product warranty is included for additional peace of mind.
Our team can assist with:
| Engine Code | G4KJ |
| Engine Capacity | 2.4L |
| Fuel Type | Petrol |
| Fuel System | GDI (Gasoline Direct Injection) |
| Engine Family | Theta II |
| Configuration | Inline 4 Cylinder |
| Valve Train | DOHC 16 Valve |
| Compression Ratio | 11.3:1 |
| Condition | Reconditioned (tested) |
| Warranty | 12 months |
The G4KJ is a 2.4L four-cylinder petrol engine from Hyundai and Kia's Theta II engine family. It features GDI fuel injection, Dual CVVT technology and a timing chain-driven design.
The G4KJ is a GDI (Gasoline Direct Injection) engine.
This listing suits Kia Optima 2.4L GDI petrol models built between 2011 and 2014. Provide your VIN and our team will confirm the exact match before purchase.
Common issues include connecting rod bearing wear, excessive oil consumption, timing chain noise, overheating and engine knocking.
Yes. Every engine is professionally inspected and tested before dispatch.
Yes. Every reconditioned engine from Hyun Engines comes with a 12-month warranty. If we supply and fit at our Dandenong workshop, typical turnaround is 2-3 business days.
In many situations, replacing a severely damaged engine with a tested replacement engine can be quicker, more economical and more reliable than a full rebuild.
Yes. Our Dandenong workshop offers full supply-and-fit service for this engine, or we can supply it Australia-wide for your own mechanic to install.
Yes. We regularly deliver engines to customers and workshops throughout Australia.
Simply provide your VIN number and our team will verify compatibility before purchase.
Other reconditioned Hyundai & Kia engines from our workshop.
Hyun Engines
🕐 Mon–Fri 9am–5pm · Sat & Sun closed
Mon–Fri, workshop hours
We reply quickly
VIC 3175, Australia
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