BMW 4 Series Brake Caliper Replacement Parts

The F32/F33/F36 generation of the BMW 4 Series ran from 2013 to 2020, with a facelift in 2017, so a 2014 and a 2017 are both within the same generation but sit either side of that facelift boundary. Brake specifications can vary across a facelift, particularly as BMW sometimes upgraded brake hardware at that point, so fitment is not guaranteed even within the same generation. Confirm with the breaker against your exact registration to make sure the caliper matches your car.

Yes, all variants of the BMW 4 Series are fitted with brake calipers on both the front and rear axles as standard. The 4 Series uses a conventional hydraulic disc brake system throughout the range, so there is no variant that lacks calipers entirely. Both front and rear calipers are available as used parts from breakers.

Yes, engine size is relevant because BMW fits larger or higher-specification brake assemblies to more powerful variants of the 4 Series, so a caliper from a 420i may not match one from a 435i or M440i. Always check the engine code and output of the donor vehicle against your own when sourcing a used caliper. Confirm the part against your registration with the breaker before purchasing.

Trim level alone does not determine which brake caliper fits your 4 Series — what matters is the engine size and the generation of the car, not whether it is badged Sport, M Sport or Luxury. However, M Sport and higher-specification cars sometimes carry larger brake packages, so if the donor car had an optional upgraded brake package fitted, the caliper dimensions may differ. Confirm with the breaker that the caliper from the donor vehicle matches your exact setup by checking your registration.

Yes, brake calipers are side-specific, so you must tell the breaker whether you need the nearside (NS, left-hand side) or offside (OS, right-hand side) caliper. Fitting the wrong side will mean the bleed nipple and hydraulic port are in the wrong position, and the caliper will not seat correctly. Always confirm NS or OS clearly when requesting a quote.

The BMW 4 Series F32/F36 generation shares its platform with the F30 3 Series, and some brake components do cross over between the two, but this depends on the specific engine variant and brake package fitted to each car. Caliper dimensions and bolt patterns can differ even between platform-mates depending on the braking specification. Check the part numbers on your existing caliper and confirm compatibility with the breaker against both registrations before buying.