Vacuum Pumpbrake System (N42 N46) (BMW 1 Series E81/E87 / 3 Series E46 / E90 / 5 Series E60 / X1 E84 / X3 E83 / Z4 E85/E86) is a critical component of the braking system that generates the vacuum needed to assist brake booster function. This support reduces pedal effort and improves overall brake responsiveness in the specified BMW models.
This pump brake system is compatible with multiple BMW platforms including the 1 Series (E81, E87), 3 Series (E46, E90), 5 Series (E60), X1 (E84), X3 (E83), and Z4 (E85, E86) equipped with N42 or N46 engines. When sourcing a replacement, compare your old pump’s position and connection points closely to ensure it matches the specific engine variant and series listed here.
The pump’s role is to maintain vacuum pressure for the brake booster when engine vacuum is insufficient, such as during high load or turbocharged conditions. If you experience a hard brake pedal or extended stopping distances, this part could be the source of the issue.
- Fits several BMW series and models with N42 and N46 engines
- Essential for brake booster vacuum supply
- Check part number and compatibility with your vehicle’s engine code
When uncertain about exact fitment, consult specialist advice or submit a request through vehicle-focused parts services to secure the correct unit for your BMW brake vacuum system needs.
Need help matching this item to your vehicle? Use more Vacuum, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.