Mercedes-Benz CLA Glow Plugs Replacement Parts

Yes, but only on diesel-engined CLA models – glow plugs are a diesel-only component used to pre-heat the combustion chamber, and petrol CLA variants never had them. If your CLA is a petrol (for example, the CLA 180, 200, 250 or 45 AMG), glow plugs simply do not exist on your car and you will not find a fitment. Check your V5 or do a VIN check to confirm whether your engine is diesel before searching further.

Glow plugs are fitted to the CLA 200 CDI, 220 CDI, and 220 d variants across both the first-generation C117 (2013–2019) and second-generation C118 (2019–present). The most useful thing you can give a breaker is your engine code – found on your V5 or a VIN check – as the number and specification of glow plugs follows the engine code directly, not the badge or trim level. Common diesel codes across these generations include OM651 and OM654, which have different glow plug specs, so quoting the code avoids any guesswork.

Both a 2015 and a 2018 CLA fall within the first-generation C117 (2013–2019), so fitment is more likely to carry across provided the engine codes match – a 220 CDI engine in a 2015 and a 220 d in a 2018 may share the same glow plugs if they share the same engine code, but the engine code is what actually determines compatibility, not the year alone. Confirm the code from your V5 and quote it to the breaker so they can cross-reference against their donor vehicle.

These are different generations with different engine families – the C117 used the OM651 diesel engine in many variants, while the C118 moved to the newer OM654 unit, which has a different glow plug specification. Because the generations span an engine architecture change, you should not assume cross-generation fitment even if the badge looks the same. Name your exact engine code when speaking to a breaker, and let them confirm whether their donor vehicle matches yours.

Trim level makes no difference to glow plug fitment – SE, Sport, and AMG Line are cosmetic and equipment-level distinctions that do not affect the engine. What matters is your engine code, since all diesel CLA trims sharing the same engine will use the same glow plugs. Simply quote your engine code to the breaker rather than your trim name and they will be able to match the part correctly.

Diesel engines typically have one glow plug per cylinder – a four-cylinder diesel CLA will therefore have four glow plugs in total. Breakers often sell them individually from a stripped engine, so you can buy only what you need, but it is worth confirming with the breaker how many they have available from their donor vehicle. Always quote your engine code so the breaker can confirm the correct plug type and available quantity.