BMW X1 2009-2015 Exhaust Specifications
BMW X1 2009-2015

BMW X1 2009-2015 Exhaust Specifications

Detailed technical guide and specifications for the 2009-2015 BMW X1 exhaust system. Includes component details, torque specifications, maintenance tips, and troubleshooting for the exhaust system.

Updated

Overview Specifications

Comprehensive description of the exhaust specifications for the 2009-2015 BMW X1, including key features, measurements, and technical details. This section covers the exhaust system's design, materials, 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 documentation using the table of contents or by scrolling through the sections. Each section is labeled with a title and contains detailed subsections.

Key Specifications

Exhaust Pipe Diameter

70 mm (2.76 in)

Catalytic Converter Efficiency

Up to 90%

Muffler Weight

8.5 kg (18.7 lbs)

Operating Temperature

400°C to 800°C (752°F to 1472°F)

Noise Level at Idle

45 to 50 dB

Available Specifications

Exhaust System Components

Detailed breakdown of the primary components of the BMW X1 exhaust system, including materials, dimensions, and functional roles.

Exhaust Manifold
  • Material: Cast iron with heat-resistant coating
  • Diameter: 50 mm (1.97 in)
  • Designed for optimal exhaust gas flow
  • Integrated with turbocharger for turbocharged models
  • Heat shielding to protect surrounding components
Catalytic Converter
  • Type: Three-way catalytic converter
  • Material: Stainless steel housing with ceramic substrate
  • Efficiency: Reduces emissions by up to 90%
  • Operating temperature: 400°C to 800°C (752°F to 1472°F)
  • Oxygen sensor integration for real-time monitoring

Note: Ensure proper functioning of oxygen sensors to maintain catalytic converter efficiency.

Muffler and Tailpipe
  • Material: Stainless steel with corrosion-resistant coating
  • Muffler design: Dual-chamber for noise reduction
  • Tailpipe diameter: 70 mm (2.76 in)
  • Exhaust tip: Chrome-plated for aesthetic appeal
  • Weight: 8.5 kg (18.7 lbs)

Exhaust System Performance

Technical details on the exhaust system's performance, including backpressure, flow rates, and noise levels.

Backpressure and Flow
  • Optimal backpressure: 0.5 to 1.0 psi
  • Exhaust gas flow rate: 200 to 250 CFM (cubic feet per minute)
  • Designed for minimal restriction to enhance engine performance
  • Turbocharged models feature lower backpressure for improved efficiency
Noise Levels
  • Idle noise level: 45 to 50 dB
  • Cruising noise level: 60 to 65 dB
  • Muffler design reduces noise by 20-30 dB
  • Complies with EU and US noise regulations

Note: Noise levels may vary slightly depending on engine type and driving conditions.

Maintenance and Service

Guidelines for maintaining and servicing the BMW X1 exhaust system, including inspection intervals and common issues.

Inspection Intervals
  • Visual inspection every 10,000 km (6,214 miles)
  • Check for leaks, cracks, and corrosion
  • Inspect mounting brackets and hangers
  • Verify oxygen sensor functionality
Common Issues
  • Corrosion in high-humidity environments
  • Cracked exhaust manifold due to thermal stress
  • Clogged catalytic converter from oil or coolant contamination
  • Loose or damaged exhaust hangers

Note: Address issues promptly to prevent further damage to the exhaust system.

Component Specifications

General Specifications

Material
Stainless steel
System Type
Dual exhaust with rear muffler
Emission Standard
EURO 5
Weight
22.5 kg
Manufacturer
BMW AG

Exhaust Manifold

Material
Cast iron
Part Number
11627559555
Bolt Torque
25 Nm
Gasket Material
Graphite
Heat Shield Thickness
1.5 mm

Catalytic Converter

Type
Three-way catalytic converter
Part Number
18307585273
Substrate Material
Ceramic
Cell Density
600 cells per square inch
Operating Temperature
400-800 °C
Efficiency
>95%

Oxygen Sensors

Upstream Sensor Part Number
11787558025
Downstream Sensor Part Number
11787558026
Operating Voltage
0.1-0.9 V
Response Time
<100 ms
Heater Resistance
6-10 ohms

Muffler

Material
Stainless steel
Part Number
18107546681
internal Baffles
3
Noise Reduction
25 dB
Outlet Diameter
80 mm

Exhaust Pipes

Material
Stainless steel
Diameter
60 mm
Wall Thickness
1.2 mm
Flex Pipe Length
150 mm
Clamp Torque
40 Nm

Exhaust Hangers

Material
Rubber with steel core
Part Number
18107546682
Load Capacity
15 kg
Vibration Damping
70%

Exhaust Tips

Material
Chrome-plated stainless steel
Part Number
18107546683
Diameter
90 mm
Length
120 mm

Emission Control

EGR System
Yes
DPF System
No
SCR System
No
Evaporative Emission Control
Yes

Diagnostic Specifications

OBDII Compliance
Yes
Fault Codes
  • P0420
  • P0430
  • P0135
  • P0141
Diagnostic Port Location
Under dashboard, driver's side
Scan Tool Requirements
BMW-specific or compatible OBDII scanner

Service Information Service

Detailed service requirements and schedules for the exhaust system

30000
24
  • Inspect exhaust system for leaks and damage
  • Check oxygen sensor operation
  • Inspect catalytic converter for damage

Replace any damaged components immediately

60000
48
  • Replace oxygen sensors
  • Inspect and clean exhaust tips
  • Check exhaust hangers for wear

Use only BMW-approved parts for replacements

100000
84
  • Inspect and replace catalytic converter if necessary
  • Check entire exhaust system for corrosion
  • Replace exhaust gaskets

Ensure all bolts are torqued to specification

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What is the diameter of the exhaust pipes on the 2009-2015 BMW X1?

The exhaust pipes on the 2009-2015 BMW X1 have an outer diameter of 60mm for the standard models and 65mm for the M Sport variants. The inner diameter is approximately 55mm and 60mm, respectively.

Q2

What type of catalytic converter is used in the BMW X1 exhaust system?

The 2009-2015 BMW X1 is equipped with a three-way catalytic converter that complies with Euro 5 emissions standards. It uses a ceramic monolith substrate with a platinum, palladium, and rhodium coating for optimal exhaust gas treatment.

Q3

What is the recommended torque specification for the exhaust manifold bolts?

The exhaust manifold bolts on the 2009-2015 BMW X1 should be torqued to 25 Nm (18.4 lb-ft) in a crisscross pattern to ensure even pressure distribution and prevent leaks.

Q4

Can I replace the stock exhaust system with an aftermarket one without voiding the warranty?

Replacing the stock exhaust system with an aftermarket one may void the warranty if it is not approved by BMW. Always consult your dealer or warranty documentation before making modifications. Using BMW Genuine Parts or BMW-approved aftermarket parts is recommended to avoid warranty issues.

Q5

What is the material used for the BMW X1 exhaust system?

The exhaust system on the 2009-2015 BMW X1 is primarily made of stainless steel, which provides excellent corrosion resistance and durability. The muffler and tailpipes are also coated with a heat-resistant finish to enhance longevity.

Q6

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 hangers and brackets. Pay special attention to the flex pipe and catalytic converter for wear and tear.

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 X1 Exhaust System Repair Manual

Coming Soon

Official BMW repair manual for the exhaust system, including step-by-step instructions for removal, installation, and troubleshooting.

Exhaust System Maintenance Guide

Coming Soon

A comprehensive guide on maintaining the exhaust system, including cleaning tips, inspection checklists, and common issues.

BMW Genuine Exhaust Parts Catalog

Coming Soon

Catalog of BMW Genuine Parts for the exhaust system, including part numbers, diagrams, and compatibility information.

Exhaust System Warranty Information

Coming Soon

Detailed information on warranty coverage for the exhaust system, including terms, conditions, and exclusions.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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