Used Hyundai i40 Glow Plugs

Yes, glow plugs are a diesel-engine component, and the i40 was sold in the UK with diesel engines, so glow plugs do exist on this model. The i40 was offered with a 1.6 CRDi and a 2.0 CRDi diesel engine, both of which use glow plugs to pre-heat the combustion chambers for cold starting. If you have a petrol i40 (the 1.6 GDi), glow plugs do not apply to your car – petrol engines use spark plugs instead. Check your V5 or run a VIN check to confirm your fuel type and engine code before ordering.

The Hyundai i40 ran as a single generation from its UK launch in 2011 through to the end of production around 2019, with a facelift arriving in 2015. The engine codes for the 1.6 CRDi and 2.0 CRDi carried across that facelift, so on paper a pre-facelift and post-facelift diesel i40 sharing the same engine code are likely to use the same glow plugs. However, whether any ancillary or mounting changes were made mid-production is something you should confirm with the breaker against your exact registration, as the engine code match is the safest starting point. Provide your full engine code from the V5 when asking for a quote.

Trim level makes no difference to glow plug fitment on the i40 – Classic, Style, and Premium are specification packages that affect interior and equipment levels, not the engine. What matters is that both cars share the same engine code, for example both being 1.6 CRDi or both being 2.0 CRDi. A glow plug from a Classic-trimmed car will be mechanically the same as one from a Premium, provided the engine codes match. Focus on the engine code from the V5 rather than the trim badge when sourcing from a breaker.

Yes, the 1.6 CRDi and 2.0 CRDi are different engines with different engine codes, and glow plugs are engine-specific parts, so they are not interchangeable between the two. Always quote your exact engine code to the breaker – it will be on your V5 logbook or available via a VIN check – rather than just the engine size. Mixing up glow plugs between engine families risks incorrect fitment and poor cold-start performance. The engine code is the single most reliable way to ensure you get the right part.

Yes, body style has no effect on glow plug fitment – the i40 was sold in the UK in both saloon and estate (Wagon) bodystyles, but the diesel engines and their glow plugs were the same across both. A glow plug from a saloon i40 with a matching engine code will fit an estate i40 with the same engine code. Simply confirm the engine codes match with the breaker and do not worry about which body style the donor car came from.

Both the 1.6 CRDi and 2.0 CRDi i40 are four-cylinder engines, so each has four glow plugs – one per cylinder. It is generally recommended to replace all four at the same time, as they age at a similar rate and a second removal job shortly after can be more costly than doing them together. When sourcing from a breaker, you can often buy a full set removed from a low-mileage donor car, which is worth asking about when you request a quote. Confirm the donor car's engine code matches yours before agreeing to purchase.