Brand New G4KJ 2.4L GDI Petrol Long Engine for Hyundai Santa Fe 2015-2021

About this engine

A Hyundai Santa Fe carries families, luggage and the occasional trailer, and it does so for years at a time, which is exactly why a worn engine feels like such a blow. If your 2015-2021 Santa Fe runs the G4KJ 2.4-litre GDI petrol engine and it has developed a knock, heavy oil use or terminal internal damage, replacing the engine is nearly always cheaper than replacing the vehicle with anything comparable.

This is a brand-new G4KJ long engine, not a recondition, built to OEM fitment specification. It is hot and cold tested before it leaves, covered by a 12-month or 50,000 km parts warranty (whichever comes first), and freight is free to any Australian address. Before you order, we confirm the engine against your VIN at no charge, so the unit that arrives is right for your exact vehicle. Call 1300 200 320 to start.

The G4KJ, the Theta II family and their common problems

Under the bonnet of a petrol Santa Fe from this era sits the G4KJ, one of four core engines in Hyundai and Kia's Theta II range. The family covers the G4KE, a port-injected 2.4; the G4KG, a 2.4 tuned for commercial duty; the turbocharged G4KH; and this engine, the G4KJ, which combines 2.4 litres of capacity with direct fuel injection. Across all four you will find the same fundamentals: an aluminium block and head, double overhead camshafts, sixteen valves and chain-driven timing.

In a vehicle the size and weight of the Santa Fe, the direct-injection 2.4 earns its keep with usable low-down torque and respectable economy for a seven-seat SUV. Direct injection meters fuel into the cylinder itself rather than the intake port, allowing more precise combustion control, though like all GDI engines it can gather carbon on the intake valves over long distances.

The reason so many owners end up shopping for a replacement is well established. Theta II engines are documented worldwide for connecting-rod bearing wear as kilometres climb, an issue serious enough that several markets saw recalls and extended factory warranties. A Santa Fe that spends its life loaded with people and gear gives its bottom end a hard workout, and once bearing knock appears, a fresh long engine beats a rebuild on both cost and certainty in most cases. The engine supplied here also breaks from the original where the original was weak: fitment stays to OEM specification, while internally it carries a higher-grade crankshaft, connecting rods, bearings and other upgraded parts in place of the components with a documented failure record.

Fitment for Hyundai Santa Fe 2015-2021

This long engine is matched to Santa Fe models sold between 2015 and 2021 that were built with the G4KJ 2.4 GDI petrol engine. Many Santa Fes of this generation were diesels, and specifications varied through the model years, so year and badge are not enough to buy an engine on. The definitive answer lives in your VIN, and checking it against this engine is free and happens before we send anything anywhere.

You will find the 17-character number on your registration paperwork, the build plate, or through the windscreen on the driver's side. Pass it to our team by phone or email and we will confirm whether this engine suits your car before payment is taken. If your Santa Fe turns out to run a different engine, we will point you at the correct listing instead of selling you the wrong one, because a mis-ordered engine wastes your time as well as ours.

For the installing workshop, the changeover is conventional. The new long engine accepts every external component from the original: manifolds, injectors and rail, throttle body, accessory drives, mounts and sensors. We recommend the workshop pressure-test the cooling system, replace the thermostat and water pump, fit new belts and hoses, and check the radiator's condition carefully, since a marginal cooling system is the single biggest threat to a freshly installed engine. None of that is exotic work for a qualified mechanic, and doing it during the swap costs a fraction of what it would as a separate job later on.

What you receive and how the process runs

Inside the crate is a complete new long engine: block, crankshaft, rods, pistons and rings assembled and measured, with the cylinder head, camshafts and valvetrain built up and torqued on top. Every component is new; nothing is machined from an old core. The build meets OEM fitment specification, and every finished engine is hot and cold tested for oil pressure, compression and running quality before it is approved to ship.

You will not find manifolds, injectors or accessories in the crate, because those transfer from the engine coming out of the car. You will find a heat tab fitted to the engine, and it matters: the tab is a permanent overheating indicator, and warranty does not extend to overheating damage, which is why we stress cooling-system work so heavily during installation.

Cover on parts is 12 months or 50,000 km, whichever is reached first, and installation by a qualified mechanic is a condition of that cover. Freight is included to anywhere in Australia. The ordering path is short: VIN check first, payment second, delivery to your nominated address third, and installation booked around the delivery. Once the car is back on the road, treat the first stretch gently and schedule an early oil change. Our team stays reachable on 1300 200 320 for you or your workshop throughout the whole process.