Australian Owned & Operated since 2017
Brand New Crate Motors only! No Rebuilds
No Exchange Motor Required to be sent Back!
Labour Warranty Available on Checkout!
Motors are sent from our QLD based Warehouse
Directly Plug and Play Crate Motors
Certified for Australian Emission Regulations
Medium to High Quality Components in all Motors.
Selling both Direct to Public and Trade Customers.
100% Fitment Guaranteed or Money Back!
Extended Warranty Available on Checkout!
All Motors included Free Postage Insurance

Phone 0461 265 808
7:30-4pm

High Quality Engines

Free Shipping in Aus

One Year Warranty

🔥 HUGE Crate Engine Sale Ends In:
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Kia Optima Engine Motor suit 2010-2015 TF G4KJ 2.4L Petrol 4 Cylinder

Original price was: $5,750.00.Current price is: $4,350.00.

Availability: 7 in stock (can be backordered)

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Product Rating: ★★★★★ Verified Reviews
Crate Engines Aus
Product Description
Brand New Kia Optima Petrol Engine suitable for all 2.4L TF Models. Specifically, the engine number that should be matched up is the G4KJ. The O.E.M manufacture G4KJ is known for developing early rod knock, and poor quality crank shafts. Our G4KJ engines have been modified to remove this possibility for this to happen in such short times making them more reliable them O.E.M options on the market. Buyers will need to transfer accessories and components like the High Pressure Fuel Pump, Intake and Exhaust Manifolds etc from their old Engine to the New Engine.
One Year 'No Bullshit" Warranty
  • Straightforward Coverage:
    All our engines come with a one-year warranty, no fine print or legal games. If something genuinely goes wrong with the engine itself — we fix it, replace it, or refund it.

  • We’re Not Like the Others:
    Unlike budget sellers who dodge responsibility or blame the installer, we actually honour our warranty — because we price our products fairly and back our quality.

  • Real Aussie Support:
    Our warranty is backed by a local Australian team, with real mechanics and customer service staff ready to help. No offshore call centres, no frustrating email loops.

  • Mechanic-Backed Installation Requirements:
    We require installation by a qualified mechanic with a verifiable receipt to activate your warranty. This ensures the engine is fitted correctly and helps avoid user-error related failures.

  • Heat Tab Monitored:
    Each engine is fitted with heat tabs. Overheating past our set threshold will void the warranty, as this typically indicates an install or cooling issue beyond our control.

  • Transparent Process:
    If a problem arises, document everything — film it, photograph it, and reach out to us immediately. We work with you to get the engine assessed and resolved fairly.

  • No Coverage for Backyard Installs:
    Home installs or undocumented mechanic jobs aren’t covered. We’re clear upfront so everyone knows where they stand.

  • Your Engine, Covered Where It Counts:
    We cover the engine long block — this includes internal components like crankshaft, pistons, and block/head integrity. External bolt-ons or accessories (manifolds, sensors, etc.) are not included unless otherwise specified.

Fast & Free Postage in 6-8 Days

Fast & Free Shipping Australia-Wide

  • Free Shipping on All Engines:
    We offer completely free postage on all crate engines across Australia — no hidden costs, no surprises.

  • Reliable Delivery with Team Global Express:
    We partner with Team Global Express, one of Australia’s top logistics companies, to ensure your engine arrives safely and on time.

  • Quick Delivery Times:
    Expect your engine to arrive within 5–10 days, with most deliveries completed within 5 business days.

  • Need it Sooner? We’ve Got You Covered:
    Choose expedited shipping for guaranteed delivery in 3–5 business days — and if we miss the mark, we’ll refund your shipping cost.

  • Fast, Reliable, and Hassle-Free:
    Our shipping service is designed to give you peace of mind, because getting back on the road shouldn’t mean waiting weeks.

What Makes Crate Engines the Best Choice?

🔧 What Makes Crate Engines Australia the Best Choice?

  • Fair, Honest Pricing:
    Our prices reflect true value — not just affordability, but the confidence that we’ll back you if something goes wrong. We stand by our warranty because we charge reasonably to support it.

  • Latest Engine Designs, Always:
    Our engines don’t sit on shelves for years. With fast turnover, you’re always getting the latest design variation, not outdated or superseded stock.

  • Local Warranty & Local Stock:
    Enjoy peace of mind with a genuine Australian warranty and stock held right here — no long waits, no overseas excuses.

  • Tested in Real Australian Conditions:
    We’re proudly Australian owned and operated, and we don’t just trust the specs — we test our engines in the field, in real-life Aussie environments.

  • Real People, Real Transparency:
    We believe in open communication. Have a question? Call us anytime on 0461 265 808 — we’re happy to chat, and we’re here to help.

Checkout our Warehouse Video
Crate Engines Aus
Crate Engines Reviews
J
Jake B.
12 Mar 2021
★★★★★
Engine works great, mechanic said it looked brand new. Thanks guys!
M
Megan T.
8 Jun 2024
★★★★★
Delivery was fast, packaging perfect. Engine running beautifully in my Hilux.
C
Corey L.
2 Dec 2022
★★★★☆
Install was easy, engine looked clean. Will buy again for my next project.
S
Sophie W.
28 May 2020
★★★★★
Customer service was unreal. Felt like I was talking to mates, not salespeople.
T
Tom R.
5 Jan 2023
★★★★★
Engine arrived faster than expected. Love the Aussie warranty!
L
Lisa M.
14 Oct 2021
★★★★☆
Some confusion with courier, but the product was perfect.
A
Alex J.
9 Feb 2020
★★★★★
Installed in my Prado, runs smooth and clean. No more oil burn!
N
Nathan C.
5 Nov 2024
★★★★★
Legit Aussie business. Got the engine within a week, super happy.
B
Bianca F.
30 Aug 2022
★★★★☆
Heat tab warning was helpful – good info for our mechanic too.
D
Derek P.
25 Mar 2023
★★★★★
Super clear warranty terms. Saved us a headache during install.
J
Jake B.
12 Mar 2021
★★★★★
Engine works great, mechanic said it looked brand new. Thanks guys!
M
Megan T.
8 Jun 2024
★★★★★
Delivery was fast, packaging perfect. Engine running beautifully in my Hilux.
C
Corey L.
2 Dec 2022
★★★★☆
Install was easy, engine looked clean. Will buy again for my next project.

High Quality Manufacturers

Kia Optima Engine for Sale

  • Top Quality Manufacturer Selected.
  • Common Engine Design Issues Fixed / Resolved.
  • One Year Product Warranty Included as Standard
  • Directly Plug & Play Engines. No Modifications Required.
Kia Optima Engine for Sale

Customer Reviews

Hundreds of High Quality Positive Reviews.

Ultra Tune C
Ultra Tune C
Ebay Purchase
Straight Drop in Plug and Play. Customer was happy. No Complaints so far after 4 Months.
Steven P
Steven P
Website Purchase
Might have been cheaper to buy second hand but the 2 year warranty justified the extra 2k. Happy.
Bowenville Repairs
Bowenville Repairs
Website Purchase
2nd Motor purchased from this crew and delivered within the 12 day period. Both motors running well as they should for the price.
Mechanic Near Me
Mechanic Near Me
Website Purchase
Good Quality Overall. Cant fault them. Interesting to see in 5-10 years time how these motors run, but for now they are great.
Rebecca P.
Rebecca P.
Ebay Purchase
I-load Motor purchased October 22. Continues to run till Present. Happy with my Purchase would recommend to anyone that needs a quality engine.
John Q.
John Q.
Website Purchase
Very Good. Delivery took 15 Days but we are still happy. The Product Quality was as Described. Wouldn't hesitate to purchase again.

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How it Works?

Crate Engines Australia
Crate Engine Aus

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Shipping & Handling

  • Free Shipping anywhere within Australia.
  • All Crate Engines are Shipped with Team Global Express.
  • Delivery Times can vary between 5-11 Days as we have multiple warehouses in Various Cities. 
  • All Crate Engines are shipped with Insurance as Standard.
  • We have Expedited Shipping Available on Checkout. 
  • International Postage is Available upon Request. 
Crate Engines Australia

5 Main Differences

What Makes Crate Engines the Best Choice?

  1. Centra Steel Crankshaft:
    Our crankshafts are made from Centra Steel, offering superior compressive strength compared to forged steel, ensuring durability and long-lasting performance.
  2. Precision Tolerances:
    We maintain crankshaft tolerances of no more than 2S, delivering exacting precision that guarantees smoother operation and reduced wear over time.

  3. OEM Precision Design:
    Our engines are built to a 1:1 specification, with 98% of the original OEM design followed, ensuring compatibility and reliability.

  4. Skilled Workforce:
    Every engine is assembled by highly skilled employees with a minimum of 5 years of hands-on engine-building experience, ensuring expertise and attention to detail.

  5. High-Grade Aluminum:
    We use only high-grade aluminum for the engine head and block (where applicable), ensuring lightweight strength and heat resistance, vital for engine longevity.

 

Be Assured with

Warranty & Returns

  • All Crate Engines include a 1 Year Manufacture Warranty.
  • Certain Guidelines Must be Followed in order to ensure this Warranty is accepted upon the event of a failure. 
  • Our website will Store your information, so if a warranty issue does come up, we have all your details. 
  • Please see our Warranty or Returns Sections. 
  • Returns are Accepted within 7 Days, providing the Engine has not be Used / Dismantled. 
  • Extended Warranty available on Checkout!
Crate Engines

More Information about

Kia Optima Engine for Sale

Crate Engines Australia proudly offers high-quality, new Kia Optima G4KJ engines for sale, catering to car enthusiasts and vehicle owners seeking reliable and powerful replacements. Our selection ensures that you find the perfect fit for your vehicle’s needs and budget. Each engine is meticulously inspected and tested to meet the highest standards, providing peace of mind and exceptional value. Whether you need an engine for routine replacement or a performance upgrade, our comprehensive inventory guarantees you’ll find exactly what you’re looking for. Kia Optima Engine for Sale

When you choose Crate Engines Australia for your new Kia Optima G4KJ engine, you are not just purchasing a component but investing in the longevity and efficiency of your vehicle. Our experienced team, boasting 30 years of expertise in automotive engine rebuilding, is dedicated to helping you find the right engine, offering expert advice and support throughout the process. We understand the specific requirements of the Kia Optima, and our engines are designed to meet and exceed these expectations. Unlike OEM engines, which may still suffer from the original design’s weak crankshafts and bearings, our engines are upgraded to address these issues, ensuring greater reliability and durability. Whether you are looking to restore your Optima to its former glory, enhance its performance, or ensure it runs smoothly for years to come, we have the perfect solution to keep your vehicle in top condition. Kia Optima Engine for Sale

In addition to our extensive inventory, Crate Engines Australia provides excellent customer service and competitive pricing, making us the go-to source for new Kia Optima G4KJ engines for sale. Our team has selected manufacturers based on strict parameters that ensure only the highest quality components and craftsmanship. We offer a one-year warranty on all our engines, giving you added confidence in your purchase. Plus, enjoy the convenience of free postage anywhere in Australia, with expedited shipping options available at checkout to get your engine to you even faster. Our commitment to quality extends beyond our products; we offer comprehensive warranties and after-sales support to ensure your complete satisfaction. Trust Crate Engines Australia to keep your Optima on the road with our premium engine offerings, tailored to meet the specific needs of Australian drivers. With our expert guidance and superior engines, you can drive with confidence, knowing your vehicle is powered by the best. Kia Optima Engine for Sale

At Crate Engines Australia, we source only from the highest quality suppliers to ensure our engines meet and exceed industry standards. Our suppliers are carefully vetted to adhere to our stringent requirements, guaranteeing that every engine we offer is built with the best materials and craftsmanship available. This dedication to quality ensures that our customers receive reliable, durable, and high-performance engines that stand the test of time. By partnering with top-tier suppliers, we can confidently provide you with the best possible products for your Kia Optima, ensuring your complete satisfaction and peace of mind. Kia Optima Engine for Sale

Weight 65 kg
Dimensions 65 × 65 × 65 cm

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High Quality Engines

High Quality Engines

High Quality Engines

High Quality Engines

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