BMW 760i 2009-2015

BMW 760i 2009-2015 Exhaust Specifications

Detailed technical specifications and documentation for the exhaust system of the 2009-2015 BMW 760i. Includes component details, torque specifications, and maintenance guidelines for the N74 V12 engine.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the exhaust specifications for the 2009-2015 BMW 760I, 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 (Primary)

70 mm (2.75 inches)

Catalytic Converter Efficiency

>95%

Muffler Weight

12 kg (26.5 lbs)

Operating Temperature (Primary Catalytic Converter)

Up to 800°C (1472°F)

Exhaust System Material

Stainless steel

Available Specifications

Exhaust System Overview

This section provides an overview of the exhaust system, including its components, layout, and key features.

Exhaust System Layout

Dual exhaust system with two independent pathways
Stainless steel construction for durability and corrosion resistance
Integrated catalytic converters for emissions control
Twin-turbo V12 engine configuration requires optimized exhaust flow

Key Components

Two primary catalytic converters (one per bank)
Two secondary catalytic converters for enhanced emissions reduction
Dual mufflers with integrated resonators for noise reduction
Exhaust tips with chrome finish for aesthetic appeal

Note: The catalytic converters are designed to meet Euro 5 emissions standards.

Exhaust Pipe Specifications

This section details the dimensions, materials, and routing of the exhaust pipes.

Primary Exhaust Pipes

Diameter: 70 mm (2.75 inches)
Material: Stainless steel with heat-resistant coating
Routing: Directly from exhaust manifolds to catalytic converters
Wall thickness: 1.5 mm

Secondary Exhaust Pipes

Diameter: 65 mm (2.56 inches)
Material: Stainless steel with heat-resistant coating
Routing: From catalytic converters to mufflers
Wall thickness: 1.5 mm

Note: The secondary pipes are designed to minimize backpressure for optimal engine performance.

Catalytic Converters

This section covers the specifications and performance of the catalytic converters.

Primary Catalytic Converters

Type: Ceramic monolith with precious metal coating
Dimensions: 150 mm (5.9 inches) diameter, 300 mm (11.8 inches) length
Operating temperature: Up to 800°C (1472°F)
Efficiency: >95% reduction of harmful emissions

Secondary Catalytic Converters

Type: Metallic substrate with precious metal coating
Dimensions: 120 mm (4.7 inches) diameter, 250 mm (9.8 inches) length
Operating temperature: Up to 700°C (1292°F)
Efficiency: >90% reduction of harmful emissions

Note: The secondary converters are located downstream of the primary converters for additional emissions control.

Mufflers and Resonators

This section provides details on the mufflers and resonators, including their design and performance.

Mufflers

Type: Dual-chamber design with sound-absorbing materials
Dimensions: 400 mm (15.7 inches) length, 300 mm (11.8 inches) width
Material: Stainless steel with internal baffles
Weight: 12 kg (26.5 lbs) per muffler

Resonators

Type: Helmholtz resonator design
Dimensions: 200 mm (7.9 inches) length, 150 mm (5.9 inches) diameter
Material: Stainless steel with perforated internal tubes
Function: Reduces specific frequency noise for a smoother exhaust note

Note: The resonators are integrated into the muffler assembly for compact packaging.

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Component Specifications

General Specifications

Material: Stainless steel

System Type: Dual exhaust with quad tailpipes

Emission Standard: EU5

Part Number: 18307585253

Weight: 32.5 kg

Exhaust Manifold

Material: Cast iron

Part Number: 11627559505

Bolt Torque: 25 Nm

Gasket Part Number: 11627559506

Heat Shield Material: Aluminized steel

Catalytic Converter

Type: Dual catalytic converters

Part Number: 18307585254

Substrate Material: Ceramic

Precious Metals

Platinum
Palladium
Rhodium

Operating Temperature: 400-800 °C

Efficiency: >95%

Resonator

Type: Center resonator

Part Number: 18307585255

Material: Stainless steel

Dimensions: 600 mm x 200 mm x 150 mm

Weight: 5.2 kg

Muffler

Type: Dual rear mufflers

Part Number: 18307585256

Material: Stainless steel

Dimensions: 800 mm x 300 mm x 200 mm

Weight: 8.5 kg

Noise Reduction: 25 dB

Tailpipes

Quantity: 4

Material: Chrome-plated stainless steel

Diameter: 90 mm

Part Number: 18307585257

Finish: Polished

Oxygen Sensors

Quantity: 4

Type: Wideband zirconia sensors

Part Number

11787559507
11787559508

Operating Temperature: -40 to 900 °C

Response Time: <100 ms

Exhaust Clamps

Material: Stainless steel

Part Number: 18307585258

Bolt Torque: 15 Nm

Quantity: 6

Heat Shields

Material: Aluminized steel

Part Number: 18307585259

Thickness: 1.5 mm

Coverage: Full underbody protection

Operational Parameters

Max Exhaust Gas Temperature: 950 °C

Back Pressure Limit: 0.5 bar

Flow Rate: 450 m³/h

Vibration Tolerance: ±2 mm

Diagnostic Specifications

Error Codes

P0420
P0430
P0135
P0141

Sensor Check interval: Every 30,000 miles

Emission Test interval: Every 2 years

Back Pressure Test interval: Every 50,000 miles

Service Information Service

Detailed service requirements and schedules for the exhaust system

30,000 miles

24 months

Inspect exhaust system for leaks
Check oxygen sensor functionality
Inspect catalytic converter efficiency

Replace oxygen sensors if error codes persist

60,000 miles

48 months

Inspect and tighten exhaust clamps
Check heat shields for damage
Inspect muffler and resonator for corrosion

Replace damaged components as necessary

100,000 miles

84 months

Perform back pressure test
Inspect catalytic converter substrate
Replace exhaust gaskets if necessary

Consider replacing catalytic converter if efficiency drops below 90%

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the exhaust system configuration for the 2009-2015 BMW 760i?

The 2009-2015 BMW 760i features a dual exhaust system with two tailpipes on each side, totaling four tailpipes. The system includes primary and secondary catalytic converters, resonators, and mufflers. The exhaust pipes are constructed from high-grade stainless steel to resist corrosion and ensure durability.

What is the diameter of the exhaust pipes on the BMW 760i?

The exhaust pipes on the 2009-2015 BMW 760i have a diameter of 70 mm (2.75 inches). This diameter is optimized for the V12 engine's exhaust flow, ensuring efficient performance and minimal backpressure.

Does the BMW 760i exhaust system include a valve-controlled exhaust flap?

Yes, the 2009-2015 BMW 760i is equipped with an electronically controlled exhaust flap. This feature adjusts the exhaust note and backpressure based on driving conditions, enhancing both performance and sound quality.

What type of catalytic converter is used in the BMW 760i exhaust system?

The BMW 760i uses a high-efficiency, three-way catalytic converter with a ceramic monolith substrate. It is designed to reduce harmful emissions, including hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx), in compliance with Euro 5 and Euro 6 emission standards.

Can aftermarket exhaust systems void the BMW warranty?

Installing an aftermarket exhaust system may void the BMW warranty if it causes damage to the vehicle or related components. BMW recommends using genuine parts to maintain warranty coverage and ensure compatibility with the vehicle's systems.

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 760i Exhaust System Technical Manual

Coming Soon

Official BMW technical documentation detailing the exhaust system components, specifications, and maintenance procedures for the 2009-2015 BMW 760i.

Exhaust System Maintenance Guide

Coming Soon

A comprehensive guide on inspecting, cleaning, and maintaining the exhaust system to ensure optimal performance and longevity.

BMW Genuine Parts Catalog

Coming Soon

Access the official BMW parts catalog to find genuine exhaust components for the 2009-2015 BMW 760i.

Emission Standards and Compliance

Coming Soon

Learn about the Euro 5 and Euro 6 emission standards and how the BMW 760i exhaust system complies with these regulations.

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