Brand New G4NA 2.0L Petrol Engine for Hyundai Elantra AD 2015-2020

About this engine

Engine Zone stocks a brand-new G4NA 2.0L petrol engine for the Hyundai Elantra AD, covering models built from 2015 to 2020. If your Elantra’s original G4NA has worn out, seized or started consuming oil at a rate no sedan should, this is the permanent fix: a zero-kilometre engine rather than a patch on a tired one.

Every engine we sell is built to OEM fitment specification, strengthened internally where the factory design had documented shortcomings, then proven with hot and cold testing before it is cleared for sale. You get a 12-month or 50,000 km parts warranty, freight included to anywhere in Australia, and a VIN check completed before dispatch so fitment is locked in ahead of payment leaving your account. To start that check, call 1300 200 320 or send your VIN through by email.

Known G4NA issues, and the maths of saving a good sedan

An Elantra AD earns its keep as a commuter. By the time engine trouble appears, the car is usually paid off, cheap to insure and doing exactly what the household needs. That context matters, because the decision is rarely about the engine alone; it is about whether a reliable, known car is worth keeping. Almost always, it is.

The trouble that gets these cars to this page is well documented. High-kilometre G4NA engines are widely reported to develop excessive oil consumption and wear in the bottom end. Australian conditions, with hot climates and long commutes, see plenty of these engines reach that stage. Early signs are frequent top-ups and blue smoke on start-up; later ones are knocking, low oil pressure warnings and, eventually, a car that will not drive home.

At that point the repair options thin out. Re-ringing worn bores is a half measure. A full machine-shop rebuild done properly is a big-ticket exercise on a small-car budget. A wrecker engine of the same design and unknown history simply restarts the countdown. None of these gives you what the car actually needs, which is an engine with no wear at all.

A brand-new G4NA does. It returns the Elantra to mechanical square one for less than the cost of changing cars, and every dollar of it goes into the one component that failed rather than into dealership depreciation.

OEM tolerances throughout, proven on the test bench

The G4NA is the 2.0-litre member of Hyundai's Nu engine family, a naturally aspirated four-cylinder with multi-point injection and chain-driven camshafts. In the Elantra AD it was the volume engine, tuned for smooth commuting and modest fuel bills rather than outright pace. Being port-injected, it avoids the intake-valve carbon build-up that direct-injection engines of the same era can suffer.

Our replacement is built new from end to end: new castings, new rotating assembly, new head and valvetrain, new chain and tensioners, with nothing machined back from a used core. It also improves on the original where it counts. The engine meets OEM fitment specification, so installation is exactly as factory, but internal parts with documented weaknesses in the original design, including the connecting rods, crankshaft and bearings, are upgraded to a higher grade. Given that the failure you are escaping is wear in precisely those areas, that change is the point of the exercise.

Before sale, the engine is hot and cold tested. That means it has actually run, and its compression, oil pressure and mechanical behaviour have been checked and signed off. A heat tab is then attached, giving a permanent, tamper-evident answer to the question of whether the engine has ever been overheated in its life after leaving us.

On the compatibility side, the Elantra AD range spans several build years and specification changes, so we anchor everything to your VIN. Provide it before ordering and we confirm your car left the factory with the G4NA this listing covers. The confirmation happens before dispatch, meaning fitment risk is dealt with while the engine is still on our floor, not when your mechanic has the old engine halfway out.

Checked against your VIN, then freighted free to your workshop

The format is a long engine. Everything internal comes assembled and tested: block, crank, rods, pistons, head, cams and timing hardware. Everything external stays with your car: manifolds, injectors, throttle body, sensors, alternator, compressor and brackets all migrate from the old engine to the new one on the workshop floor. Workshops prefer this arrangement because the transferred parts are already matched to your car's wiring and plumbing.

Freight costs you nothing anywhere in Australia. The engine is strapped to a pallet and can go to any address capable of receiving one; nine times out of ten that is the installing workshop.

Installation is strictly a job for a qualified mechanic, both for warranty validity and because the swap touches fuel, cooling, electrical and emissions systems. Ask the workshop to fit new oil and a filter, renew the coolant, and flush and pressure-test the cooling system before first start. If the original engine died of oil starvation, the cause, whether missed services or a hidden leak, needs fixing now so it cannot claim the new engine too.

Warranty on parts runs 12 months or 50,000 km, whichever is first. Overheating recorded by the heat tab is not covered, and neither is amateur installation. Those two conditions aside, it is a straightforward promise on a straightforward product.

For fitment confirmation or anything else, ring 1300 200 320. Two minutes with your VIN now saves days of mucking around later.