Brembo Rear Brake Rotor for BMW 3-Series (1984–1993)

This is a Brembo rear brake rotor (part number 08.3947.24) — the rotating disc the pads bite into, the part doing the real work of turning kinetic energy into heat under hard braking. Brembo has supplied Formula 1 since 1975, and in 2025 every single Grand Prix winner ran on Brembo or Brembo Group brakes.

Brembo casts its rotors from high-carbon iron for better heat dissipation, the same metallurgy approach it uses across OE and motorsport programs. Match this part to your application using the fitment table below — Brembo's range covers exact OE positions, and getting the right one matters as much as the brand.

Technical Details

• Manufacturer part number: 08.3947.24
• Part type: Rear Brake Rotor
• Vehicle system: Rear brake system
• Listed fitment years: 1984–1993

Fitment & Compatibility

Use the fitment table below to confirm year, model, submodel, and any brake-package notes before ordering. Optional and AMG/sport brake packages can change the correct part.

Our team at PMB Performance has worked on brakes and Porsche cars for over 20 years and can match this to your application. Send your VIN if you want fitment confirmed first.