Used BMW 4 Series Coil Pack

Coil packs are ignition components that only exist on petrol engines, so whether your 4 Series has them depends entirely on which engine is fitted. The 4 Series has always been offered with both petrol and diesel options, and if yours is a diesel (for example any 420d, 425d or 430d variant) it uses compression ignition and has no coil packs at all. If your car is a petrol variant — such as the 420i, 428i, 430i or M440i — it will have coil packs, one per cylinder. Check your V5 or run a VIN check to confirm your fuel type before searching.

These are two distinct generations: the F32 ran from 2013 to 2020, while the G22 launched in 2020 onwards, and although some engine families carried across between them the coil packs are not a straightforward swap. Fitment is driven by the engine code rather than the generation badge, so two cars sharing an identical engine code could in principle use the same coil pack, but mounting arrangements and connector designs can change between generations. Name the boundary to your breaker — F32 versus G22 — and ask them to match against your specific engine code and registration before agreeing a sale. Never assume generation-to-generation compatibility without that confirmation.

No — body style has no bearing on coil pack fitment whatsoever, because the coil pack is an engine component and the engine is the same regardless of whether the car is a coupe, convertible or Gran Coupe. What matters is the engine code, which you can find on your V5 logbook or via a VIN check. Give the breaker your engine code and registration and the body style can be disregarded entirely for this part.

Both years sit within the F32 generation (2013–2020), and if both cars share the same engine code — as two 420i models of that era very likely do — the coil packs are generally considered to be the same part. The 420i in that period typically used a four-cylinder turbocharged petrol engine, and the coil pack specification follows the engine code above all else. That said, ancillary or connector changes can occur quietly within a production run, so confirm with the breaker using both registrations to be certain before buying.

Trim level makes no difference to coil pack fitment — SE, Sport, M Sport and M Sport Pro are distinctions that affect interior specification, wheels and cosmetic features, not the engine. Two cars of the same engine code will use the same coil pack regardless of which trim badge they carry. Simply provide your engine code and registration to the breaker and trim can be ignored for this search.

A petrol 4 Series has one coil pack per cylinder, so a four-cylinder engine such as those found in the 420i or 430i will have four coil packs, while the straight-six engines in models like the M440i will have six. It is common practice to replace all coil packs at the same time since they age at a similar rate, but you can buy individually if only one has failed. When sourcing from a breaker, let them know whether you need a single unit or a full set, and always match by engine code to ensure you are getting the correct part for your specific engine.