BMW 528i 2011-2016 Exhaust Specifications
Detailed technical specifications and documentation for the 2011-2016 BMW 528i exhaust system. Learn about components, torque specs, maintenance, and troubleshooting for the N20 turbocharged engine.
Overview Specifications
Comprehensive description of the exhaust specifications for the 2011-2016 BMW 528I, including key features, measurements, and technical details
How to Use
Use the search function to locate specific exhaust specifications by entering keywords such as 'catalytic converter', 'muffler', or 'exhaust pipe diameter'.
Navigate through the exhaust documentation sections by using the table of contents or clicking on the section headers in the sidebar.
Key Specifications
Exhaust Pipe Diameter
2.25 inches
Catalytic Converter Length
12.5 inches
Muffler Weight
12.5 lbs
Maximum Flow Rate
450 CFM
Backpressure at 5000 RPM
1.2 psi
Available Specifications
Exhaust System Components
Detailed breakdown of the primary components of the exhaust system, including materials, dimensions, and functional roles.
Exhaust System Components
Detailed breakdown of the primary components of the exhaust system, including materials, dimensions, and functional roles.
Catalytic Converter
- Material: Stainless steel with ceramic honeycomb substrate
- Dimensions: 12.5 inches in length, 5.5 inches in diameter
- Efficiency: Reduces harmful emissions by up to 90%
- Operating Temperature: 400°C to 800°C
Muffler
- Material: Aluminized steel with internal baffles
- Dimensions: 24 inches in length, 8 inches in width
- Noise Reduction: Reduces exhaust noise by 20-30 dB
- Weight: 12.5 lbs
Note: The muffler is designed to minimize backpressure while optimizing sound dampening.
Exhaust Pipes
- Material: 409-grade stainless steel
- Diameter: 2.25 inches (main pipe), 1.75 inches (secondary pipes)
- Wall Thickness: 1.5 mm
- Corrosion Resistance: Rated for 10+ years under normal conditions
Exhaust System Performance
Technical details on the performance characteristics of the exhaust system, including flow rates, backpressure, and emissions compliance.
Exhaust System Performance
Technical details on the performance characteristics of the exhaust system, including flow rates, backpressure, and emissions compliance.
Flow Rate
- Maximum Flow Rate: 450 CFM (cubic feet per minute)
- Optimal Flow Rate: 350 CFM at 3000 RPM
- Backpressure: 1.2 psi at 5000 RPM
- Pressure Drop: 0.8 psi across the catalytic converter
Emissions Compliance
- Compliance: Meets Euro 5 and EPA Tier 2 standards
- CO2 Emissions: 150 g/km
- NOx Emissions: 0.05 g/km
- Particulate Matter: 0.005 g/km
Note: The system includes an oxygen sensor for real-time emissions monitoring.
Exhaust System Maintenance
Guidelines for maintaining the exhaust system, including inspection intervals, common issues, and replacement recommendations.
Exhaust System Maintenance
Guidelines for maintaining the exhaust system, including inspection intervals, common issues, and replacement recommendations.
Inspection Intervals
- Visual Inspection: Every 10,000 miles
- Emission System Check: Every 20,000 miles
- Catalytic Converter Efficiency Test: Every 50,000 miles
- Muffler Integrity Check: Every 30,000 miles
Common Issues
- Corrosion: Check for rust, especially in high-humidity areas
- Leaks: Inspect for cracks or holes in the pipes
- Noise: Excessive noise may indicate a failing muffler
- Performance Drop: Reduced power could signal a clogged catalytic converter
Note: Regular maintenance can extend the lifespan of the exhaust system by up to 50%.
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Component Specifications
General Specifications
- System Type
- Twin-pipe exhaust system with dual tailpipes
- Material
- Stainless steel
- Weight
- Approximately 22.5 kg
- Emission Standard
- EU5 compliant
- Part Number
- 18307585277
Exhaust Manifold
- Material
- Cast iron
- Bolt Torque
- 25 Nm
- Gasket Part Number
- 11627548921
- Heat Shield Part Number
- 11627548922
- Notes
- Ensure proper alignment during installation to avoid leaks
Catalytic Converter
- Type
- Three-way catalytic converter
- Part Number
- 18307585278
- Operating Temperature
- 400-800°C
- Efficiency
- >95%
- Replacement interval
- 120,000 miles or 10 years
- Notes
- Monitor for clogging or damage to prevent engine performance issues
Oxygen Sensors
- Upstream Sensor Part Number
- 11787558023
- Downstream Sensor Part Number
- 11787558024
- Operating Voltage
- 0.1-0.9 V
- Replacement interval
- 100,000 miles
- Notes
- Ensure proper wiring and connector integrity during replacement
Muffler
- Type
- Dual-chamber muffler
- Part Number
- 18307585279
- Noise Level
- <72 dB
- Material
- Stainless steel
- Notes
- Inspect for rust or damage during routine maintenance
Exhaust Pipes
- Diameter
- 60 mm
- Material
- Stainless steel
- Length
- Approximately 2.5 meters
- Clamp Part Number
- 18307585280
- Notes
- Ensure proper alignment and secure clamping to prevent leaks
Exhaust Flanges
- Material
- Stainless steel
- Bolt Torque
- 30 Nm
- Gasket Part Number
- 18307585281
- Notes
- Inspect for warping or damage during disassembly
Exhaust Hangers
- Material
- Rubber with steel core
- Part Number
- 18307585282
- Quantity
- 4
- Notes
- Replace if cracked or deteriorated to prevent excessive movement
Exhaust Valve
- Type
- Electronically controlled exhaust flap
- Part Number
- 18307585283
- Operating Voltage
- 12 V
- Notes
- Ensure proper electrical connections and functionality during diagnostics
Diagnostic Specifications
- Backpressure Limit
- <0.5 bar
- Oxygen Sensor Response Time
- <100 ms
- Catalytic Converter Efficiency Threshold
- >90%
- Notes
- Use BMW-specific diagnostic tools for accurate readings
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust system for leaks, damage, and corrosion
- Check oxygen sensor functionality
- Verify catalytic converter efficiency
Perform visual and functional checks during routine maintenance
- Replace oxygen sensors if necessary
- Inspect and tighten exhaust clamps and hangers
- Check exhaust valve operation
Ensure all components are securely fastened and functioning properly
- Replace catalytic converter if efficiency is below threshold
- Inspect and replace exhaust hangers if deteriorated
- Perform full exhaust system diagnostic
Follow BMW-recommended procedures for component replacement
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the exhaust system configuration for the 2011-2016 BMW 528i?
What is the exhaust system configuration for the 2011-2016 BMW 528i?
The 2011-2016 BMW 528i features a dual exhaust system with a single turbocharger. The system includes a catalytic converter, resonator, and muffler. The exhaust pipes are made of stainless steel with a diameter of 60mm, designed to optimize exhaust flow and reduce backpressure.
Q2 What is the recommended maintenance schedule for the exhaust system?
What is the recommended maintenance schedule for the exhaust system?
BMW recommends inspecting the exhaust system every 30,000 miles or 24 months, whichever comes first. Key checks include inspecting for leaks, corrosion, and ensuring all mounting brackets and hangers are secure. The catalytic converter should also be checked for proper function during routine emissions testing.
Q3 Can I replace the stock exhaust with an aftermarket system?
Can I replace the stock exhaust with an aftermarket system?
Yes, but it is crucial to ensure the aftermarket system complies with local emissions regulations and does not void the vehicle's warranty. BMW recommends using genuine or BMW-approved parts to maintain performance and avoid potential issues with the vehicle's ECU and emissions systems.
Q4 What are the torque specifications for exhaust manifold bolts?
What are the torque specifications for exhaust manifold bolts?
The exhaust manifold bolts on the 2011-2016 BMW 528i should be torqued to 23 Nm (17 ft-lbs) in a crisscross pattern to ensure even pressure distribution. Always use a calibrated torque wrench and follow the manufacturer's tightening sequence.
Q5 How do I identify a failing catalytic converter?
How do I identify a failing catalytic converter?
Symptoms of a failing catalytic converter include reduced engine performance, increased exhaust emissions, a sulfur-like smell, and the illumination of the check engine light. Diagnostic trouble codes (DTCs) such as P0420 or P0430 may also indicate catalytic converter inefficiency.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
BMW Exhaust System Repair Manual
Coming SoonOfficial BMW repair manual for the 2011-2016 528i exhaust system, including step-by-step procedures and torque specifications.
Exhaust System Maintenance Guide
Coming SoonComprehensive guide on maintaining and troubleshooting the exhaust system, including common issues and solutions.
Genuine BMW Exhaust Parts Catalog
Coming SoonCatalog of genuine BMW exhaust components, including part numbers and compatibility information for the 2011-2016 528i.
Emissions Compliance and Regulations
Coming SoonDetailed information on emissions standards and how they apply to the 2011-2016 BMW 528i exhaust system.
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