Second Hand BMW M8 Cylinder Head

The BMW M8 uses the S63 twin-turbocharged V8 engine, so the engine code is the single most important detail when sourcing a used cylinder head — it must match exactly, not just the M8 badge. You can find your engine code on your V5C or by running a VIN check before contacting a breaker. Never assume a head from another S63-engined model will drop straight in without confirming the exact code variant with the breaker against your registration.

The BMW M8 (F91/F92/F93) was introduced in 2019 and remains in production through this generation, with a facelift arriving in 2022 — so a 2019 head and a 2022 head sit either side of that boundary. Within the pre-facelift period the S63 engine code is your guide to compatibility, but whether heads interchange cleanly across the 2022 facelift line is something you should confirm with the breaker against your exact registration and engine code. Body style — Coupe, Convertible, or Gran Coupe — does not affect cylinder head fitment.

The M8 Competition and the standard M8 share the same S63 engine family, and trim level alone does not determine cylinder head fitment — the engine code is what matters. If the engine codes match between a donor Competition car and your standard M8 (or vice versa), the head may well be compatible, but you should confirm this with the breaker against your registration rather than assume the trim label settles it. Expect the breaker's car to differ in cosmetic and interior specification, but those differences are irrelevant to whether the cylinder head fits.

Both the M5 (F90) and M8 (F91/F92/F93) use variants of the S63 V8 engine, which makes this a reasonable question, but the specific engine code variant and any mid-production running changes mean you cannot assume a straight swap. Supply your exact engine code to the breaker and ask them to confirm it against the donor vehicle's code before agreeing a purchase. This is one of those situations where the breaker's expertise matched to your registration number is essential.

Gearbox type does not directly affect cylinder head fitment on the BMW M8, as the head is part of the engine assembly rather than the drivetrain — the M8 was offered exclusively with an automatic (M Steptronic) transmission in the UK in any case. The key variables to match remain the engine code and fuel type; confirm these details with the breaker against your registration to be sure. Gearbox type becomes more relevant when sourcing ancillary components, but for the cylinder head itself it is not a deciding factor.

Whether a replacement cylinder head requires ECU pairing or immobiliser coding depends on the specific components attached to it and how it was configured on the donor vehicle, and this is something you must confirm with your fitting garage and the breaker rather than assume. Some ancillary sensors and components may have been updated or changed during the M8's production run, so ask the breaker to check the donor car's details against your registration. A reputable breaker will be transparent about what has come with the head and flag anything that may need professional coding work.