BMW Z4 2009-2016 Exhaust Specifications
Detailed technical specifications and documentation for the 2009-2016 BMW Z4 exhaust system. Includes component details, torque specifications, and maintenance guidelines.
Overview Specifications
Comprehensive description of the exhaust specifications for the 2009-2016 BMW Z4, including key features, measurements, and technical details. This section provides detailed information on 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.'
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Key Specifications
Exhaust Pipe Diameter
60 mm (2.36 in)
Tailpipe Diameter
80 mm (3.15 in)
Muffler Weight
8.5 kg (18.7 lbs)
Exhaust Flow Rate
450 CFM
Pressure Drop
1.2 psi
Available Specifications
Exhaust System Design
Detailed information on the design and layout of the exhaust system for the 2009-2016 BMW Z4.
Exhaust System Design
Detailed information on the design and layout of the exhaust system for the 2009-2016 BMW Z4.
Exhaust Pipe Configuration
- Dual exhaust system with two separate pipes for improved airflow
- Stainless steel construction for durability and corrosion resistance
- Pipe diameter: 60 mm (2.36 in) for optimal exhaust flow
- Integrated resonator for noise reduction
Catalytic Converter
- High-efficiency catalytic converter for reduced emissions
- Located close to the exhaust manifold for faster warm-up
- Oxygen sensor placement: pre- and post-catalytic converter
- Material: Ceramic substrate with platinum and palladium coating
Note: The catalytic converter is designed to meet Euro 5 emissions standards.
Muffler and Tailpipe
Technical details about the muffler and tailpipe components of the exhaust system.
Muffler and Tailpipe
Technical details about the muffler and tailpipe components of the exhaust system.
Muffler Design
- Chambered muffler design for effective noise cancellation
- Material: Stainless steel with heat-resistant coating
- Dimensions: 500 mm x 300 mm x 200 mm (19.7 in x 11.8 in x 7.9 in)
- Weight: 8.5 kg (18.7 lbs)
Tailpipe Specifications
- Dual chrome-plated tailpipes for a sporty appearance
- Tailpipe diameter: 80 mm (3.15 in)
- Integrated exhaust flap for variable sound tuning
- Position: Angled downward for improved aerodynamics
Performance and Emissions
Details on the exhaust system's impact on vehicle performance and emissions.
Performance and Emissions
Details on the exhaust system's impact on vehicle performance and emissions.
Backpressure and Flow
- Optimized backpressure for improved engine efficiency
- Exhaust flow rate: 450 CFM (cubic feet per minute)
- Pressure drop across the system: 1.2 psi (pounds per square inch)
- Designed to minimize power loss
Emissions Compliance
- Complies with Euro 5 emissions standards
- NOx emissions: < 0.06 g/km
- CO emissions: < 0.5 g/km
- Particulate matter: < 0.005 g/km
Note: The exhaust system includes a secondary air injection system for cold-start emissions reduction.
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Component Specifications
General Specifications
- Material
- Stainless steel
- System Type
- Dual exhaust with cross-pipe
- Emission Compliance
- Euro 5 and EPA Tier 2
- Weight
- 28.5 kg
- Noise Level
- 72 dB(A) at 3000 RPM
Exhaust Manifold
- Material
- Cast iron
- Part Number
- 11627586945
- Bolt Torque
- 25 Nm
- Gasket Material
- Graphite
- Heat Shield Material
- Aluminized steel
Catalytic Converter
- Type
- Three-way catalytic converter
- Part Number
- 18307585263
- Substrate Material
- Ceramic
- Precious Metals
-
- Platinum
- Palladium
- Rhodium
- Operating Temperature
- 400-800 °C
- Efficiency
- >95%
Resonator
- Material
- Stainless steel
- Part Number
- 18107546671
- Diameter
- 100 mm
- Length
- 450 mm
- internal Baffle Type
- Perforated tube with fiberglass packing
Muffler
- Material
- Stainless steel
- Part Number
- 18107546672
- Diameter
- 120 mm
- Length
- 600 mm
- internal Structure
- Chambered design with sound-absorbing material
- Outlet Diameter
- 90 mm
Exhaust Pipes
- Material
- Stainless steel
- Diameter
- 70 mm
- Wall Thickness
- 1.5 mm
- Flex Pipe Material
- Braided stainless steel
- Clamp Type
- V-band clamp
- Clamp Torque
- 15 Nm
Oxygen Sensors
- Upstream Sensor Part Number
- 11787558027
- Downstream Sensor Part Number
- 11787558028
- Operating Temperature Range
- -40 to 900 °C
- Response Time
- <100 ms
- Voltage Output Range
- 0.1-0.9 V
Exhaust Mounts
- Material
- Rubber with steel inserts
- Part Number
- 18307546673
- Quantity
- 4
- Load Capacity
- 15 kg each
- Durability
- Resistant to oil, heat, and ozone
Exhaust Tips
- Material
- Chrome-plated stainless steel
- Part Number
- 18107546674
- Diameter
- 90 mm
- Length
- 150 mm
- Finish
- Polished
Operational Parameters
- Max Exhaust Gas Temperature
- 950 °C
- Back Pressure Limit
- 0.3 bar
- Flow Rate
- 450 m³/h
- Thermal Expansion Allowance
- 5 mm
Maintenance Specifications
- inspection Interval
- Every 30,000 miles or 24 months
- Torque Check interval
- Every 60,000 miles
- Gasket Replacement interval
- Every 100,000 miles
- Cleaning Requirements
- Avoid abrasive cleaners on chrome tips
Diagnostic Specifications
- Common Fault Codes
-
- P0420
- P0430
- P0135
- P0141
- Diagnostic Tools
-
- BMW ISTA
- OBD-II scanner
- Sensor Testing Procedure
- Check voltage output and response time
- Back Pressure Testing
- Use a pressure gauge at the downstream O2 sensor port
Service Information Service
Detailed service requirements and schedules for the exhaust system
- Inspect exhaust system for leaks and damage
- Check exhaust mounts for wear and tear
- Verify oxygen sensor functionality
Replace any damaged components immediately
- Retorque all exhaust clamps and bolts
- Inspect catalytic converter for efficiency
- Check resonator and muffler for internal damage
Use a torque wrench for accurate tightening
- Replace exhaust gaskets
- Inspect and clean exhaust tips
- Perform back-pressure test
Replace oxygen sensors if performance is degraded
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the diameter of the exhaust pipes on the 2009-2016 BMW Z4?
What is the diameter of the exhaust pipes on the 2009-2016 BMW Z4?
The exhaust pipes on the 2009-2016 BMW Z4 have a diameter of 65mm for the sDrive28i and sDrive35i models, while the sDrive35is model features a 70mm diameter for enhanced performance.
Q2 What type of catalytic converter is used in the 2009-2016 BMW Z4?
What type of catalytic converter is used in the 2009-2016 BMW Z4?
The 2009-2016 BMW Z4 is equipped with a high-flow metallic catalytic converter, designed to meet Euro 5 emissions standards. It features a 400-cell-per-square-inch substrate for optimal exhaust gas treatment.
Q3 What is the recommended service interval for inspecting the exhaust system?
What is the recommended service interval for inspecting the exhaust system?
BMW recommends inspecting the exhaust system every 30,000 miles or 24 months, whichever comes first. This includes checking for leaks, corrosion, and ensuring all mounting points are secure.
Q4 Can I install an aftermarket exhaust system without voiding my warranty?
Can I install an aftermarket exhaust system without voiding my warranty?
Installing an aftermarket exhaust system may void your warranty if it causes damage to other components or violates BMW's warranty terms. Always consult your dealer or warranty documentation before making modifications.
Q5 What is the backpressure specification for the 2009-2016 BMW Z4 exhaust system?
What is the backpressure specification for the 2009-2016 BMW Z4 exhaust system?
The backpressure specification for the 2009-2016 BMW Z4 exhaust system should not exceed 0.5 psi at idle and 2.5 psi at full throttle. Exceeding these values may indicate a blockage or restriction in the system.
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 Z4 Exhaust System Maintenance Guide
Coming SoonA detailed guide on maintaining the exhaust system, including inspection procedures, cleaning tips, and troubleshooting common issues.
Genuine BMW Exhaust Parts Catalog
Coming SoonAccess the official catalog of genuine BMW exhaust components, including part numbers, specifications, and compatibility details.
BMW Z4 Exhaust System Technical Manual
Coming SoonThe official technical manual for the 2009-2016 BMW Z4 exhaust system, covering installation, repair, and diagnostic procedures.
Exhaust System Warranty Information
Coming SoonLearn about the warranty coverage for the BMW Z4 exhaust system, including terms, conditions, and exclusions.
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