Brand New G4NA 2.0L Petrol Engine for Hyundai Tucson 2015-2017

About this engine

When a Hyundai Tucson built between 2015 and 2017 starts using oil between services, losing compression or knocking from cold, the G4NA under its bonnet is usually the story. Rather than sinking money into a worn 2.0L engine, many owners choose to fit a brand-new G4NA and put the problem behind them permanently.

That is what this listing is: a new G4NA 2.0L petrol engine, built to OEM fitment specification with upgraded internals where the original design was weakest, and hot and cold tested before dispatch. It comes with a 12-month or 50,000 km parts warranty and free freight to any Australian address that can receive a pallet. We decode your VIN before the engine ships, so the unit that arrives at your workshop is confirmed for your exact Tucson. Questions first? Call 1300 200 320 and talk it through with us.

Common G4NA problems: oil consumption and bottom-end wear

The G4NA has an honest, widely reported weakness: in high-kilometre examples, excessive oil consumption and bottom-end wear are commonly seen. What starts as an occasional top-up can progress to a litre or more between oil changes, followed by piston slap, rod knock or a sudden loss of oil pressure.

Once wear reaches the bottom end, part-fixes rarely hold. New rings in worn bores, or bearings on a marked crank, tend to buy months rather than years. A thorough rebuild addresses it properly, but by the time the block is machined and the parts bill is totalled, the cost often lands uncomfortably close to a brand-new engine, without matching its consistency.

Second-hand G4NA engines are plentiful at wreckers, and that is exactly the trap. The donor engine is the same design with unknown kilometres, so there is a fair chance it is quietly developing the same oil consumption you are trying to escape. Swapping one worn G4NA for another can mean doing the whole job twice.

This is why full replacement with a new engine has become the default answer for Tucson owners who intend to keep the car. It deals with the known weak point in one step, restores factory compression and oil control, and leaves you with an SUV that has plenty of life left in the body, cabin and driveline.

Fresh bores, fresh bearings, zero excuses

The engine supplied here is a brand-new G4NA, the 2.0-litre naturally aspirated four-cylinder from Hyundai's Nu family, matched to Tucson models sold from 2015 to 2017. It uses multi-point fuel injection and a timing chain, a combination that keeps ongoing maintenance simple: no belt changes, and none of the intake-valve carbon issues associated with direct-injection designs.

Every unit is built new throughout: block, crank, pistons and rings, bearings and head, with no reconditioned core hiding under fresh paint. More importantly for a G4NA buyer, it is not a simple reproduction of the factory design. The engine is made to OEM fitment specification so it installs exactly as the original did, but where the design's weaknesses are documented, the internals are upgraded, with higher-grade connecting rods, crankshaft, bearings and other internal parts specified from the outset. The known failure points are engineered out rather than copied over.

Assembly finishes with hot and cold testing. The engine is run and measured, so compression, oil pressure and running quality are confirmed on the exact unit that will be freighted to you. A heat tab goes on before dispatch; it is the permanent record that the engine has never been overheated, and it protects both sides if a warranty question ever arises.

Fitment is verified against your VIN, not just your model year. Tucson variants of this era carried more than one engine option, and the differences matter for mounts, sensors and wiring. Send the VIN through by phone or email, we confirm the match, and only then is the engine released for freight. If your Tucson turns out to need a different unit, you find that out before paying, not after the freight company has been and gone.

From our floor to your hoist without a freight bill

You are buying a long engine: block, cylinder head and every internal component assembled and tested as a single unit. The bolt-on hardware, meaning manifolds, injectors, throttle body, sensors, alternator, air conditioning compressor and brackets, is not part of the package. Your mechanic transfers those from the original engine, which is standard practice and keeps the job economical.

Freight is free everywhere in Australia. The engine ships on a pallet, and most customers have it sent straight to their chosen workshop so it is waiting when the car goes on the hoist.

A qualified mechanic must perform the installation; the warranty depends on it, and so does the result. Given what usually kills a G4NA, insist on new oil and a new filter, fresh coolant, and a cooling system flush and pressure test as part of the job. If oil starvation or overheating contributed to the original failure, that root cause has to be corrected before the new engine turns a single revolution.

Cover runs for 12 months or 50,000 km on parts, whichever is reached first. The two firm exclusions are overheating, evidenced by the heat tab, and unprofessional installation. Keep the workshop invoice and stay on top of oil changes, and the warranty looks after the rest.

To confirm fitment, arrange delivery timing or just sanity-check the whole plan, phone 1300 200 320. It is easier to answer questions before the engine ships than after.