The BMW N55 engine succeeded the legendary N54, offering a single twin-scroll turbo design for smoother power delivery and improved reliability. Found in models like the 335i, 535i, X5, and M2, the N55 remains one of BMW’s most popular inline-six engines. At Miami Engines, we provide specialized N55 engine rebuilds, repairs, and machine shop services, ensuring your BMW performs at its best on Miami’s roads and tracks.

Common BMW N55 Engine Issues

While more refined than the N54, the N55 engine is not without its weaknesses. Some of the most common issues include:

• Valve cover and gasket leaks – Leading to oil loss and excessive heat.
  

• Charge pipe failures – The stock plastic charge pipe is prone to cracking.
  

• High-pressure fuel pump (HPFP) issues – Affecting drivability and fuel delivery.
  

• Turbo wastegate problems – Resulting in rattling and reduced efficiency.
  

• Cooling system failures – Thermostat and water pump breakdowns are common in Miami’s climate.
  
  

Our team of BMW specialists in Miami can diagnose and repair these problems before they lead to major damage.

N55 Engine Rebuild Services

When your N55 engine reaches high mileage or suffers major internal wear, a full rebuild restores its performance and reliability. Our BMW engine rebuild services in Miami include:

• Complete disassembly and inspection
  

• Cylinder head resurfacing and valve work
  

• Cylinder honing and block machining for proper fit
  

• New pistons, bearings, seals, and gaskets
  

• Precision crankshaft balancing
  

• Reassembly to BMW factory standards
  
  

A rebuilt N55 from Miami Engines runs stronger, lasts longer, and delivers dependable performance.

Machine Shop Precision for BMW N55

Our in-house machine shop ensures every rebuild and repair is done with absolute precision. Services include:

• Cylinder head repairs and resurfacing
  

• Valve seat machining and polishing
  

• Block decking and honing
  

• Crankshaft polishing and balancing
  

• MIG & TIG welding for damaged components
  
  

This level of machining accuracy is essential for both stock rebuilds and high-performance builds.

Performance Upgrades for N55 Engines

The N55 engine responds exceptionally well to performance upgrades. At Miami Engines, we integrate VAC Motorsports parts and custom solutions to increase horsepower and reliability, including:

• Upgraded intercoolers and charge pipes Turbocharger upgrades
  

• High-flow intake and exhaust systems
  

• ECU tuning for optimized performance
  
  

Pairing machine shop precision with upgrades makes the N55 a reliable powerhouse for Miami’s performance driving community.

Why Choose Miami Engines for Your BMW N55

• BMW-focused specialists with proven rebuild experience
  

• Advanced in-house machine shop for precision machining
  

• Expertise in both repairs and performance upgrades
  

• Trusted by Miami’s BMW enthusiasts and track drivers
  
  

Schedule Your N55 Engine Service in Miami

If your BMW N55 engine is showing signs of wear, oil leaks, or performance issues, trust Miami Engines. Our expert N55 rebuilds, repairs, and performance upgrades deliver unmatched reliability and power. Contact our Miami team today to schedule your engine service.