Used Alfa Romeo Spider Glow Plugs

Only the diesel-engined versions of the Alfa Romeo Spider have glow plugs — petrol engines use spark plugs instead and never had glow plugs fitted. The Spider was primarily sold with petrol engines in the UK, but a 2.4 JTDm diesel variant was available, and it is that engine which uses glow plugs. If your Spider is petrol-engined, you need spark plugs, not glow plugs.

Trim level makes no difference to glow plug fitment — what matters is the engine code, not whether your car is a base, Lusso, or Q4 spec. Glow plugs follow the engine, so two Spiders with the same diesel engine code will use the same plugs regardless of trim. Focus on supplying your engine code to the breaker rather than your trim name.

The most important detail is your engine code, which you can find on your V5C or by running a VIN check — this tells the breaker exactly which diesel engine you have and ensures the correct plug is sourced. You should also confirm the model year, as there can be differences within the Spider's production run (2006–2011 for the 939-series generation). Providing your full registration alongside the engine code gives the breaker the best chance of matching the right part to your car.

The Spider, 159, and Brera share the same 939-series platform and the same 2.4 JTDm diesel engine, so glow plugs from these models are often interchangeable where the engine code matches. However, you should confirm this directly with the breaker against your registration and engine code, as ancillary components and specification can vary between applications even on shared engines. Matching on engine code is the safest approach rather than assuming platform sharing guarantees compatibility.

The 939-series Alfa Romeo Spider ran from 2006 to 2011 as a single generation, so a 2006 and a 2010 car are within the same production run. If the engine codes match, the glow plugs are likely compatible, but you should confirm this with the breaker against both registrations as minor specification changes can occur across a production run. Never assume fitment without the breaker verifying the engine codes on both donor and recipient vehicles.

No — petrol engines do not use glow plugs at all, as glow plugs are a diesel-only component used to pre-heat the combustion chamber for cold starts. If your Spider is petrol-engined, the part you are looking for is spark plugs, not glow plugs. Check your V5C or run a VIN check to confirm your fuel type and engine code before ordering any ignition components.