BMW 528i 2004-2010 Exhaust Specifications
Detailed technical guide and specifications for the exhaust system of the 2004-2010 BMW 528i. Includes exhaust manifold, catalytic converter, muffler, oxygen sensors, and exhaust pipe details.
Overview Specifications
Comprehensive description of the exhaust specifications for the 2004-2010 BMW 528I, including key features, measurements, and technical details. This section provides detailed insights into the exhaust system's design, components, and performance specifications.
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 using the table of contents or by scrolling through the major sections and subsections.
Key Specifications
Exhaust Pipe Diameter
60 mm
Catalytic Converter Temperature
400°C to 800°C
Muffler Weight
8.5 kg
Flange Torque
40 Nm
Resonator Volume
3.5 liters
Available Specifications
Exhaust System Overview
This section provides an overview of the exhaust system, including its components, layout, and primary functions.
Exhaust System Overview
This section provides an overview of the exhaust system, including its components, layout, and primary functions.
Exhaust System Components
- Dual exhaust pipes with a diameter of 60 mm
- Stainless steel muffler with a capacity of 12 liters
- Two catalytic converters (one per bank)
- Oxygen sensors located pre- and post-catalytic converter
Exhaust System Layout
- Exhaust manifold integrated into the cylinder head
- Downpipe connects to the catalytic converter
- Midpipe connects the catalytic converter to the muffler
- Tailpipe extends from the muffler to the rear of the vehicle
Note: The exhaust system is designed for optimal flow and minimal backpressure.
Catalytic Converter Specifications
This section details the catalytic converter's design, materials, and performance specifications.
Catalytic Converter Specifications
This section details the catalytic converter's design, materials, and performance specifications.
Catalytic Converter Design
- Honeycomb ceramic substrate with a cell density of 400 cells per square inch
- Platinum, palladium, and rhodium coating for emissions control
- Operating temperature range: 400°C to 800°C
- Flow rate of 250 liters per second at full load
Emissions Compliance
- Meets Euro 4 emissions standards
- Reduces CO emissions by 90%
- Reduces NOx emissions by 85%
- Reduces HC emissions by 80%
Note: The catalytic converter is designed for high efficiency and durability.
Muffler and Resonator Specifications
This section covers the muffler and resonator's design, materials, and acoustic performance.
Muffler and Resonator Specifications
This section covers the muffler and resonator's design, materials, and acoustic performance.
Muffler Design
- Stainless steel construction with a wall thickness of 1.5 mm
- Internal baffles for noise reduction
- Weight: 8.5 kg
- Acoustic reduction: 25 dB at 3000 RPM
Resonator Specifications
- Located in the midpipe section
- Chamber volume: 3.5 liters
- Designed to cancel specific frequencies
- Material: Aluminized steel
Note: The resonator enhances exhaust note quality while reducing drone.
Exhaust Pipe and Flange Specifications
This section provides details on the exhaust pipes and flanges, including dimensions and materials.
Exhaust Pipe and Flange Specifications
This section provides details on the exhaust pipes and flanges, including dimensions and materials.
Exhaust Pipe Dimensions
- Main pipe diameter: 60 mm
- Wall thickness: 1.2 mm
- Total length: 3.2 meters
- Bend radius: 150 mm
Flange Specifications
- Material: Stainless steel
- Bolt size: M10 x 1.5
- Torque specification: 40 Nm
- Gasket material: Graphite-impregnated fiber
Note: Flanges are designed for a leak-free seal and easy assembly.
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Component Specifications
General Specifications
- Material
- Stainless steel
- System Type
- Dual exhaust with catalytic converters
- Emission Standard
- EU4
- Weight
- 22.5 kg
- Manufacturer
- BMW AG
Exhaust Manifold
- Material
- Cast iron
- Part Number
- 11627548025
- Bolt Torque
- 25 Nm
- Gasket Part Number
- 11621437395
- Heat Shield Material
- Aluminum
Catalytic Converter
- Type
- Three-way catalytic converter
- Part Number
- 18307548023
- Efficiency
- >95%
- Operating Temperature
- 400-800°C
- Replacement interval
- 120,000 miles
Muffler
- Type
- Dual-chamber muffler
- Part Number
- 18107548021
- Material
- Stainless steel
- Noise Level
- <72 dB
- Mounting Bolt Torque
- 30 Nm
Exhaust Pipes
- Diameter
- 60 mm
- Material
- Stainless steel
- Wall Thickness
- 1.5 mm
- Flex Pipe Part Number
- 18107548022
- Clamp Torque
- 20 Nm
Oxygen Sensors
- Type
- Heated zirconia sensor
- Part Number
- 11787548024
- Location
- Pre-catalytic and post-catalytic
- Operating Temperature
- 300-850°C
- Replacement interval
- 100,000 miles
Exhaust Hangers
- Material
- Rubber with steel core
- Part Number
- 18107548020
- Quantity
- 4
- Load Capacity
- 15 kg each
- Replacement interval
- Inspect every 30,000 miles
Exhaust Flanges
- Material
- Stainless steel
- Part Number
- 18107548019
- Bolt Size
- M8
- Bolt Torque
- 25 Nm
- Gasket Part Number
- 18107548018
Heat Shields
- Material
- Aluminum
- Part Number
- 18107548017
- Thickness
- 1.2 mm
- Mounting Bolt Torque
- 15 Nm
- Replacement interval
- Inspect every 50,000 miles
Diagnostic Specifications
- Back Pressure Limit
- <0.5 bar
- Oxygen Sensor Voltage Range
- 0.1-0.9 V
- Catalytic Converter Efficiency Threshold
- >90%
- Exhaust Leak Test Procedure
- Smoke test or pressure test
- Error Codes
-
- P0420
- P0430
- P0135
- P0141
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust hangers and heat shields
- Check for exhaust leaks
- Inspect oxygen sensor connections
Ensure all bolts and clamps are properly torqued
- Inspect catalytic converter for damage
- Check exhaust pipe integrity
- Test oxygen sensor functionality
Replace oxygen sensors if performance is degraded
- Replace oxygen sensors
- Inspect and replace exhaust gaskets if necessary
- Check muffler and catalytic converter for corrosion
Follow BMW-recommended replacement intervals for critical components
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the diameter of the exhaust pipe for a 2004-2010 BMW 528i?
What is the diameter of the exhaust pipe for a 2004-2010 BMW 528i?
The exhaust pipe diameter for the 2004-2010 BMW 528i is 60mm (2.36 inches). This measurement is consistent across the dual exhaust system, which includes two pipes running from the catalytic converter to the rear muffler.
Q2 What type of catalytic converter is used in the 2004-2010 BMW 528i?
What type of catalytic converter is used in the 2004-2010 BMW 528i?
The 2004-2010 BMW 528i is equipped with a stainless steel, three-way catalytic converter. It is designed to reduce emissions of hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) by converting them into less harmful gases like carbon dioxide (CO2), nitrogen (N2), and water vapor (H2O).
Q3 What is the recommended torque specification for exhaust manifold bolts?
What is the recommended torque specification for exhaust manifold bolts?
The recommended torque specification for the exhaust manifold bolts on the 2004-2010 BMW 528i is 23 Nm (17 ft-lbs). Ensure the engine is cool before tightening to avoid warping the manifold.
Q4 How often should the exhaust system be inspected?
How often should the exhaust system be inspected?
The exhaust system should be inspected every 30,000 miles or during routine maintenance. Look for signs of corrosion, leaks, or damage to the pipes, muffler, and catalytic converter. Early detection can prevent costly repairs and ensure optimal performance.
Q5 Can aftermarket exhaust systems affect the vehicle's performance?
Can aftermarket exhaust systems affect the vehicle's performance?
Yes, aftermarket exhaust systems can affect performance. While some may improve airflow and increase horsepower, others may disrupt the backpressure balance, leading to reduced engine efficiency or triggering the Check Engine Light (CEL). Always choose systems compatible with the N52 engine and BMW's ECU tuning.
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 Maintenance Guide
Coming SoonA detailed guide on maintaining the exhaust system, including inspection tips, common issues, and repair procedures specific to the 2004-2010 BMW 528i.
Catalytic Converter Replacement Procedure
Coming SoonStep-by-step instructions for replacing the catalytic converter on the 2004-2010 BMW 528i, including tools required and safety precautions.
Exhaust System Torque Specifications
Coming SoonA comprehensive list of torque specifications for all exhaust system components, including manifolds, pipes, and mufflers, specific to the 2004-2010 BMW 528i.
OEM vs. Aftermarket Exhaust Systems
Coming SoonA comparison of OEM and aftermarket exhaust systems, highlighting the pros and cons of each for the 2004-2010 BMW 528i.
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