Second Hand BMW M8 AC Compressor

The BMW M8 (F91/F92/F93) launched in 2019 and runs through to the current generation, so a 2019 and 2022 unit are within the same generation — however, the engine code is the critical check, as both should carry the S63 4.4-litre twin-turbo V8, but ancillary mounting or bracket changes can occur mid-production without a formal facelift. Cross-reference the engine codes on both vehicles' V5s or via a VIN check, then confirm with the breaker that the specific unit they have matches your registration before buying. Fitment is never guaranteed on a used part.

The M8 uses the S63 twin-turbo V8, while the standard 840i uses the B58 straight-six and the 840d uses a diesel engine — these are entirely different engines, so their AC compressors are not the same part. Always match on engine code rather than the 8 Series badge; supply your engine code (from your V5 or a VIN check) to the breaker so they can pull the correct unit. Do not assume fitment based on the shared F92 body shell.

Trim level does not affect AC compressor fitment — both the standard M8 and the M8 Competition use the S63 engine, so mechanically they share the same compressor. The Competition badge brings suspension, software, and cosmetic differences, none of which alter the compressor specification. Confirm the engine code matches between donor and recipient vehicles and check with the breaker against your registration, but trim alone is not a concern here.

Both years sit within the F91/F92/F93 M8 generation (2019 onwards) and share the S63 engine code, which is a positive starting point for compatibility. That said, ancillary or mounting changes can occur quietly during a production run, so you should confirm with the breaker that the part they hold is verified against your specific registration rather than relying on year alone. Providing your engine code and full VIN to the breaker is the safest approach.

The M8 Coupe (F92) and M8 Gran Coupe (F93) both use the S63 4.4-litre twin-turbo V8, so the body style difference does not in itself affect the AC compressor specification — mechanical parts follow the engine, not the roofline. Confirm the engine codes match on both vehicles and ask the breaker to verify the part against your registration, as mounting or bracket differences between body styles are worth ruling out. Never assume fitment without that check.

Whether a replacement AC compressor requires ECU coding or immobiliser pairing on the M8 is something you must confirm with your fitting garage or the breaker against your specific registration, as this can vary and we cannot state it as fact. What we can say is that the engine code match remains the first and most important fitment check — get that right before worrying about anything else. A BMW specialist or main dealer will be best placed to advise on any coding requirements for your vehicle.