Hyundai i40 Alternator Replacement Parts

The Hyundai i40 was produced as a single generation running from 2011 to 2019, with a facelift arriving in 2015, so your 2012 and 2015 cars sit either side of that facelift boundary. Fitment of the alternator depends primarily on engine code rather than model year, so if both cars share the same engine code the unit may well interchange, but whether any ancillary or mounting changes were introduced at the 2015 facelift is something you should confirm with the breaker against your registration. Always supply your engine code — found on your V5 or via a VIN check — when requesting a quote.

Engine code is the single most important detail for alternator fitment on the i40 — mechanical parts follow the engine, not the badge or model year. The i40 was offered with a range of petrol and diesel engines, and alternators are rated and configured to match the specific engine they were built for, so two i40s from the same year can require different units if they have different engine codes. Always quote your engine code to the breaker rather than relying on year alone.

Trim level — whether SE, Active, Style, or Premium — does not affect alternator fitment on the i40, as this is a mechanical component determined by the engine, not the interior or equipment specification. You may find cosmetic differences such as ancillary brackets or covers between donor cars from different trims, but the alternator unit itself will be chosen by engine code, fuel type, and year. Tell the breaker your engine code and registration and they can identify the correct unit regardless of which trim your car is.

No — petrol and diesel i40 alternators are not interchangeable, as the units are engineered to suit the different electrical demands and engine configurations of each fuel type. Always confirm to the breaker whether your car is petrol or diesel, alongside the engine code, to ensure you receive the correct part. Supplying your registration number makes this straightforward for most breakers to verify.

A registration number allows most breakers to run a VIN or vehicle data check that will return the engine code, so in practice this is usually sufficient for them to identify the correct alternator. However, if the car has had an engine swap at any point in its history the registered details may not match the fitted engine, so it is worth double-checking the engine code on your actual vehicle if you have any doubts. The engine code is typically stamped on the engine block and is also listed on the V5C document.

Body style — whether saloon or estate — has no effect on alternator fitment, as the alternator is matched to the engine rather than the body. Both body styles were available across the i40 range and can share the same alternator provided the engine code, fuel type, and specification match. Focus your search on engine code and year, and let the breaker confirm compatibility against your registration.