2017–2022 Kia Sportage 2.4L G4KJ Engine for Sale – Theta II GDI Gen2 Replacement Motor

Product Overview

If you are searching for a 2017–2022 Kia Sportage 2.4L G4KJ engine for sale, this listing is built for you. This is a brand new Gen2 Theta II GDI 4-cylinder motor designed as a direct replacement for your Kia Sportage. Whether your current engine has failed, burned out, or needs a full swap, this unit gives you a clean, ready-to-install solution.

This is not a used or rebuilt engine. It is a new 2.4L gasoline engine that matches the factory spec for the Sportage non-turbo application. Buyers looking for a reliable Kia Sportage replacement engine will find this listing covers the right engine code, the right generation, and the right displacement.

Engine Specifications

Here is a quick look at the key specs for this G4KJ Gen2 motor:

• Engine Code: G4KJ (G4KJ-Gen2)
• Engine Family: Theta II GDI
• Displacement: 2.4 Liters
• Cylinder Count: 4-Cylinder (Inline)
• Fuel System: Gasoline Direct Injection (GDI)
• Turbo: No (non-turbo)
• Condition: Brand New
• Warranty: 6 Months
• Package: Complete engine assembly

This is a non-turbo GDI engine. It uses direct injection technology, which is standard for the Theta II family used in Kia and Hyundai vehicles of this generation. No rebuilt cores. No remanufactured short blocks. You are getting a full engine package right out of the box.

Vehicle Compatibility / Fitment

This 2.4L G4KJ replacement engine is compatible with the following vehicles:

• Kia Sportage – 2017, 2018, 2019, 2020, 2021, 2022
• Kia Optima – 2016, 2017, 2018, 2019, 2020
• Kia Sorento – 2016, 2017, 2018, 2019, 2020
• Hyundai Santa Fe – 2017, 2018, 2019, 2020
• Hyundai Tucson – 2019, 2020, 2021
• Hyundai Sonata – 2015, 2016, 2017, 2018, 2019

The G4KJ engine is shared across multiple Kia and Hyundai platforms. That makes it one of the more versatile Kia SUV engine replacement options on the market. However, fitment can vary based on trim level, transmission type, and regional specifications.

Always confirm fitment before purchase. Match your VIN and engine code to the listing before placing an order.

Why Choose This G4KJ Theta II GDI Engine

There are a few strong reasons to go with this specific unit over other options.

• Correct Engine Code: This is a true G4KJ-Gen2 motor. Not a Gen1 carryover. The Gen2 application matters because the internal components and emissions calibration differ from earlier Theta II units. You get what your Sportage was designed to run.
• Brand New Condition: Many listings for Kia Sportage 2.4L engines sell used or imported cores. This engine comes in new condition. That means no unknown mileage and no wear from a previous vehicle.
• Complete Engine Package: This is a full Kia engine assembly. You are not buying a short block or bare long block. The complete package reduces the time your mechanic spends sourcing extra parts.
• Kia and Hyundai Platform Compatibility: The Theta II GDI engine family is used across the Kia Optima, Kia Sorento, Hyundai Santa Fe, Hyundai Tucson, and Hyundai Sonata. If you own one of these vehicles, this same unit may apply to your swap as well.
• Backed by Warranty: You get a 6-month warranty with this engine. That gives you peace of mind after the installation is complete.

Condition, Mileage & Quality Checks

This engine is listed as brand new. That is the condition as described by the seller.

Here is what to verify before you finalize your order:

• Request engine photos. Ask the seller for current images of the unit you will receive. Look for signs of cosmetic damage, missing sensors, or incomplete accessory ports.
• Check what is included. Confirm whether the engine comes with accessories like the intake manifold, oil pan, timing cover, and sensors.
• Review the inspection details. A brand-new factory replacement motor should have no signs of prior use. Confirm this with the seller before payment.
• Low mileage vs new condition. This is listed as new, not low mileage. There is a difference. A new Kia engine has never been installed or run. Confirm this with your seller.

Taking these steps before you buy saves time and avoids returns later.

Shipping Across the USA

This Kia Sportage replacement engine ships to all 48 contiguous states. Freight shipping applies because of the size and weight of an engine assembly.

Here is what to expect:

• Freight delivery is standard for engine shipments.
• Tracking is provided once the order ships.
• Liftgate or tailgate service may or may not be included, depending on the carrier and your location. Confirm this with the seller when you order.
• Delivery location matters. Engine freight typically delivers to a ground-level address. If you need delivery to a shop or lift-equipped location, mention that when you place the order.

This engine does not ship to Alaska, Hawaii, or US territories under standard freight terms. Contact the seller for special arrangements if needed.

Installation Notes

A brand new 2.4L engine swap is not a DIY job for most vehicle owners. Here is what to keep in mind:

• Use a professional mechanic or shop. Engine installation requires proper tools, a lift, and experience with Kia or Hyundai powertrains.
• Confirm your VIN before ordering. Your VIN contains the engine code and builds specs. A trained mechanic can pull this from the vehicle, or a dealer can confirm it.
• Match your engine code. Your replacement engine must match your original G4KJ application. Do not assume all 2.4L engines are interchangeable.
• Reuse original external components where needed. Items like the exhaust manifold, alternator, power steering pump, and AC compressor may need to come from your old engine. Confirm this with your installer.
• Check for any existing technical service bulletins (TSBs). For Theta II engines, it is worth asking your mechanic about any known issues specific to your model year before finalizing the swap.

Warranty / Return Information

This G4KJ Theta II GDI engine comes with a 6-month warranty from the date of purchase.

Before you buy, review the following:

• Warranty coverage typically covers the engine unit itself. It may not cover labor, installation errors, or damage caused by improper installation.
• Return authorization is required before sending back any engine. Do not ship a return without first contacting the seller and receiving written approval.
• Freight returns are handled differently from standard parcel returns. Engines shipped via freight must go back through freight carriers. The cost and process for freight returns should be clarified before you buy.
• Review the full return policy on the seller's website before completing your purchase.

Understanding these terms ahead of time protects your investment.

Frequently Asked Questions

1. Will this 2017–2022 Kia Sportage 2.4L G4KJ engine fit my vehicle? 

It is listed as compatible with 2017 to 2022 Kia Sportage models with the 2.4L non-turbo engine. Always confirm fitment by matching your VIN and engine code before you order.

2. What does G4KJ-Gen2 mean on a Kia Sportage engine? 

G4KJ is the engine code for Kia's 2.4L Theta II GDI 4-cylinder. Gen2 refers to the second generation of this engine family, which has updated internals compared to the original Gen1 Theta II motors.

3. Is this Kia Sportage 2.4L GDI engine brand new or used? 

This engine is listed as brand new. It has not been previously installed or run in another vehicle.

4. Does this G4KJ Theta II engine come with a warranty? 

Yes. This engine comes with a 6-month warranty. Review the full warranty terms on the seller's site for coverage details and exclusions.

5. Can this Kia Sportage replacement engine ship across the USA? 

Yes. This engine ships via freight to all 48 contiguous US states. Ask about liftgate delivery options when you place your order.

6. Should I confirm my VIN before ordering this Kia Sportage engine? 

Yes. Always confirm your VIN and engine code before ordering. This ensures the G4KJ Gen2 engine matches your specific vehicle build and trim level.

For full warranty, shipping, and return details, visit the DMV JDM Motors website before placing your order.