Second Hand Hyundai i30 Glow Plugs

Glow plugs only exist on diesel-engined i30s — they are the pre-heating devices that warm the combustion chamber before a cold diesel start, and petrol engines do not use them at all. If your i30 is a petrol variant, you will never find glow plugs on it and what you may actually be looking for are spark plugs instead. Check your V5 or a VIN check to confirm your fuel type before ordering.

The i30 Mk1 ran from 2007 to 2012 and the Mk2 from 2012 to 2017, and these generations used different engine families, so glow plugs from one will not necessarily cross over to the other. The engine code is the critical detail here — two diesel i30s can share a glow plug specification if they share the same engine code, regardless of generation, but you should never assume this without confirming the codes match. Always supply your exact engine code (shown on your V5 or via a VIN check) when getting a quote from a breaker.

The Mk2 i30 received a facelift around 2015, and while the core diesel engines carried across that boundary, there is a possibility of ancillary or specification changes mid-production that could affect compatibility. Because fitment at that specific boundary can be difficult to confirm without checking the actual engine codes against each other, you should confirm compatibility with the breaker using your registration or engine code rather than relying on year alone. Supplying your engine code directly gives the breaker the clearest basis for matching the correct plug specification.

Trim level makes no difference to glow plug fitment — SE, Premium, Sport, and N Line are all badge and equipment distinctions, not mechanical ones, and the glow plugs are determined entirely by the engine. Two diesel i30s with the same engine code will use the same glow plugs regardless of which trim they came from, so you can source from any matching-engine-code donor car without worrying about trim. Focus on the engine code, not the trim badge, when speaking to a breaker.

A diesel i30 will have one glow plug per cylinder, so a four-cylinder diesel engine will have four glow plugs in total. When buying used from a breaker, you can often source a full set of four from a dismantled car, which is worth doing since plugs typically wear at similar rates. Confirm the engine code with the breaker so they can match the correct plug type and quantity to your specific engine.

Body style has no bearing on glow plug fitment whatsoever — the plugs are part of the engine, not the bodywork, so a hatchback, Tourer estate, and fastback with the same engine code all use identical glow plugs. This means you can source from any body style variant as long as the engine codes match, which is useful when a breaker has a Tourer in stock but you drive a hatchback. Engine code is all that matters — confirm it from your V5 or a VIN check before approaching a breaker.