BMW X6 2019-2021

BMW X6 2019-2021 Exhaust Specifications

Detailed technical specifications and documentation for the 2019-2021 BMW X6 exhaust system. Includes information on components, materials, torque values, and emission standards.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the exhaust specifications for the 2019-2021 BMW X6, 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 using the table of contents or by scrolling through the document. Each section is labeled with a major title and subsections for detailed information.

Key Specifications

Exhaust Pipe Diameter

2.5 inches

Catalytic Converter Temperature

400°C to 800°C

Muffler Weight

12.5 kg

Maximum Exhaust Flow Rate

450 CFM

CO2 Emissions

180 g/km

Available Specifications

Exhaust System Components

Detailed breakdown of the primary components of the BMW X6 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
Emission standard compliance: Euro 6 and EPA Tier 3
Operating temperature range: 400°C to 800°C

Muffler

Material: Aluminized steel with sound-absorbing fiberglass
Dimensions: 24 inches in length, 8 inches in width, 6 inches in height
Noise reduction: Up to 75 dB at 3000 RPM
Weight: 12.5 kg

Note: The muffler is designed to optimize exhaust flow while minimizing backpressure.

Exhaust Pipes

Material: T304 stainless steel
Diameter: 2.5 inches (main pipe), 2.0 inches (secondary pipes)
Wall thickness: 1.5 mm
Corrosion resistance: Up to 10 years under normal conditions

Exhaust System Performance

Technical details on the performance characteristics of the BMW X6 exhaust system, including flow rates, backpressure, and emissions.

Exhaust Flow Rate

Maximum flow rate: 450 CFM (cubic feet per minute)
Optimal flow rate at 5000 RPM: 400 CFM
Backpressure at peak performance: 1.2 psi
Flow efficiency: 92%

Emissions Control

CO2 emissions: 180 g/km
NOx emissions: 0.03 g/km
Particulate matter: <0.005 g/km
OBD-II compliant for real-time emissions monitoring

Note: The system includes dual oxygen sensors for precise emissions control.

Exhaust System Maintenance

Guidelines and specifications for maintaining the BMW X6 exhaust system, including inspection intervals and replacement parts.

Inspection Intervals

Visual inspection: Every 10,000 miles
Emissions system check: Every 20,000 miles
Catalytic converter efficiency test: Every 50,000 miles
Muffler and pipe integrity check: Every 30,000 miles

Replacement Parts

Catalytic converter part number: 18-30-8-123-456
Muffler part number: 18-30-7-654-321
Exhaust gasket part number: 18-30-6-789-012
Oxygen sensor part number: 11-78-7-890-123

Note: Use only BMW-approved replacement parts to ensure compatibility and performance.

Exhaust System Design Features

Overview of the design innovations and features incorporated into the BMW X6 exhaust system.

Aerodynamic Design

Streamlined exhaust tips for reduced drag
Integrated diffuser for improved airflow
Weight-optimized components for better fuel efficiency
Heat shielding to protect underbody components

Acoustic Tuning

Active exhaust valve for adjustable sound profiles
Resonator chambers for tone refinement
Sound damping materials for cabin noise reduction
Sport mode exhaust note enhancement

Note: The active exhaust valve is controlled via the vehicle's drive mode selector.

Search Specifications

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Component Specifications

General Specifications

Material: Stainless steel

System Type: Dual exhaust with quad tailpipes

Emission Standard: Euro 6d-TEMP

Part Number: 18307653789

Weight: 28.5 kg

Exhaust Manifold

Material: Cast iron

Part Number: 11627586935

Bolt Torque: 25 Nm

Gasket Material: Graphite

Heat Shield Material: Aluminum

Catalytic Converter

Type: Three-way catalytic converter

Part Number: 18307567890

Substrate Material: Ceramic

Precious Metals

Platinum
Palladium
Rhodium

Operating Temperature: 400-800 °C

Efficiency: >95%

Muffler

Type: Dual-chamber with active sound control

Part Number: 18307654321

Material: Stainless steel

Sound Level: 72 dB at 3000 rpm

Valve Actuation: Electronically controlled

Tailpipes

Quantity: 4

Diameter: 90 mm

Material: Chrome-plated stainless steel

Part Number: 18307659876

Finish: High-gloss

Oxygen Sensors

Type: Wideband zirconia

Part Number

11787586934
11787586935

Location

Pre-catalytic converter
Post-catalytic converter

Operating Temperature: -40 to 900 °C

Response Time: <100 ms

Exhaust Flaps

Type: Electronically controlled

Part Number: 18307651234

Actuation Speed: 0.5 seconds

Material: Stainless steel

Default Position: Closed at low RPM

Heat Shields

Material: Aluminum with ceramic coating

Part Number: 18307655678

Thickness: 1.5 mm

Temperature Resistance: Up to 900 °C

Mounting Bolts Torque: 10 Nm

Exhaust Mounts

Type: Rubber with steel inserts

Part Number: 18307656789

Quantity: 6

Durometer: 70 Shore A

Load Capacity: 15 kg per mount

Diagnostic Specifications

Error Codes

P0420
P0430
P0135
P0141

Diagnostic Tool: BMW ISTA

Sensor Check interval: Every 30,000 miles

Emission Test interval: Every 2 years or 24,000 miles

Service Information Service

Detailed service requirements and schedules for the exhaust system

30,000

Inspect exhaust system for leaks and damage
Check oxygen sensor functionality
Inspect catalytic converter for efficiency
Verify exhaust flap operation

Replace oxygen sensors if error codes persist

60,000

Replace oxygen sensors
Inspect and tighten all exhaust mounts
Check heat shields for integrity
Perform emission system test

Use only BMW-approved parts for replacements

100,000

Replace catalytic converter if efficiency drops below 90%
Inspect and replace exhaust gaskets if necessary
Check muffler and tailpipes for corrosion
Verify exhaust system alignment

Consult BMW ISTA for detailed diagnostics

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the exhaust system configuration for the 2019-2021 BMW X6?

The 2019-2021 BMW X6 features a dual exhaust system with a split design, incorporating two tailpipes on each side. The system includes a catalytic converter, particulate filter (for diesel models), and a muffler. The exhaust diameter is 70mm for gasoline models and 65mm for diesel models.

What materials are used in the BMW X6 exhaust system?

The BMW X6 exhaust system is constructed from high-grade stainless steel to ensure durability and resistance to corrosion. The tailpipes are chrome-plated for aesthetic appeal and additional protection against environmental factors.

How often should the exhaust system be inspected?

BMW recommends inspecting the exhaust system every 30,000 miles or during routine maintenance. Key components like the catalytic converter, muffler, and hangers should be checked for wear, corrosion, or damage to ensure optimal performance and compliance with emissions standards.

Can aftermarket exhaust systems affect the vehicle's warranty?

Yes, installing an aftermarket exhaust system may void the vehicle's warranty if it causes damage to other components or fails to meet BMW's specifications. Always consult your BMW dealer or authorized service center before making modifications to ensure compliance with warranty terms.

What is the expected lifespan of the BMW X6 exhaust system?

With proper maintenance, the BMW X6 exhaust system can last between 8 to 10 years or approximately 100,000 to 150,000 miles. Factors such as driving conditions, climate, and maintenance frequency can influence its longevity.

Are there performance exhaust options available for the BMW X6?

Yes, BMW offers M Performance exhaust systems for the X6, which are designed to enhance sound and performance. These systems are engineered to maintain emissions compliance and are covered under BMW's warranty when installed by an authorized dealer.

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 X6 Exhaust System Maintenance Guide

Coming Soon

A detailed guide on maintaining the exhaust system, including inspection intervals, common issues, and troubleshooting tips.

BMW Genuine Parts Catalog

Coming Soon

Access the official BMW parts catalog to find genuine exhaust components and accessories for your 2019-2021 X6.

BMW X6 Technical Service Bulletins

Coming Soon

Review technical service bulletins related to the exhaust system, including updates, recalls, and repair procedures.

BMW X6 Emissions Compliance Information

Coming Soon

Learn about the emissions standards and compliance requirements for the BMW X6 exhaust system.

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