BMW 760i 2001-2008

BMW 760i 2001-2008 Exhaust Specifications

Detailed technical specifications and documentation for the exhaust system of the 2001-2008 BMW 760i. Includes exhaust manifold, catalytic converter, muffler, and pipe specifications, along with torque values and maintenance guidelines.

Updated Oct 4, 2023

Overview Specifications

Comprehensive description of the exhaust specifications for the 2001-2008 BMW 760I, including key features, measurements, and technical details. This section covers 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

70 mm (2.75 inches)

Catalytic Converter Weight

4.5 kg (9.9 lbs)

Muffler Length

600 mm (23.6 inches)

Exhaust Tip Diameter

90 mm (3.5 inches)

Clamp Torque

25 Nm (18.4 ft-lbs)

Available Specifications

Exhaust System Overview

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

System Layout

Dual exhaust system with two separate pipes from the engine to the rear mufflers
Stainless steel construction for durability and corrosion resistance
Includes two catalytic converters, one per exhaust bank
Exhaust pipe diameter: 70 mm (2.75 inches)

Primary Components

Two catalytic converters with integrated oxygen sensors
Two rear mufflers with integrated exhaust tips
Flexible exhaust couplings to reduce vibration
Heat shields for thermal management

Note: The catalytic converters are designed to meet Euro 3 emissions standards.

Catalytic Converters

This section details the specifications and functionality of the catalytic converters in the exhaust system.

Design and Function

Ceramic honeycomb substrate for efficient exhaust gas treatment
Pre- and post-cat oxygen sensors for emissions monitoring
Operating temperature range: 400°C to 800°C (752°F to 1472°F)
Designed to reduce CO, HC, and NOx emissions

Technical Specifications

Catalyst material: Platinum, Palladium, and Rhodium
Dimensions: 300 mm (11.8 inches) length, 120 mm (4.7 inches) diameter
Weight: 4.5 kg (9.9 lbs) per converter
Replacement interval: 160,000 km (100,000 miles)

Note: Ensure proper alignment of oxygen sensors during installation.

Mufflers and Exhaust Tips

This section covers the design, materials, and performance of the mufflers and exhaust tips.

Muffler Design

Chambered design for noise reduction
Stainless steel construction with polished finish
Integrated exhaust tips with chrome plating
Dimensions: 600 mm (23.6 inches) length, 200 mm (7.9 inches) diameter

Exhaust Tips

Dual oval-shaped tips per muffler
Tip diameter: 90 mm (3.5 inches)
Chrome-plated for aesthetic appeal
Integrated into the rear bumper design

Note: Exhaust tips are non-adjustable and must align with the bumper cutouts.

Exhaust Pipe and Mounting

This section provides details on the exhaust pipes, mounting hardware, and installation specifications.

Pipe Specifications

70 mm (2.75 inches) diameter for optimal exhaust flow
Mandrel-bent for smooth airflow
Heat-resistant coating to prevent corrosion
Total system length: 4.2 meters (13.8 feet)

Mounting Hardware

Rubber hangers for vibration isolation
Stainless steel clamps for secure connections
Torque specifications: 25 Nm (18.4 ft-lbs) for clamps
Heat shields secured with 10 mm bolts

Note: Inspect rubber hangers for wear during routine maintenance.

Search Specifications

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Component Specifications

General Specifications

Material: Stainless steel

System Type: Dual exhaust with catalytic converters

Configuration: V12 engine, dual exhaust banks

Emission Standard: Euro 3 compliant

Part Number: 18307545253

Exhaust Manifold

Material: Cast iron

Bolt Torque: 22 Nm

Gasket Part Number: 11621437395

Heat Shield Material: Aluminum

Heat Shield Bolt Torque: 10 Nm

Catalytic Converters

Type: Two-way catalytic converter

Location: Integrated into exhaust manifolds

Part Number: 18301438394

Operating Temperature: 400-800°C

Efficiency: >95%

Replacement interval: 100,000 miles

Exhaust Pipes

Diameter: 70 mm

Material: Stainless steel

Wall Thickness: 1.5 mm

Flex Pipe Part Number: 18107545254

Clamp Torque: 25 Nm

Mufflers

Type: Dual chamber muffler

Material: Stainless steel

Part Number: 18107545255

Weight: 12.5 kg

Noise Reduction: 30 dB

Oxygen Sensors

Type: Heated zirconia oxygen sensor

Location

Pre-catalytic converter
Post-catalytic converter

Part Number

11787545256
11787545257

Operating Temperature: 300-850°C

Replacement interval: 60,000 miles

Exhaust Hangers

Material: Rubber with steel reinforcement

Quantity: 6

Part Number: 18107545258

Load Capacity: 15 kg

Replacement interval: Inspect every 30,000 miles

Exhaust Tips

Material: Chrome-plated stainless steel

Diameter: 90 mm

Part Number: 18107545259

Length: 150 mm

Finish: Polished

Exhaust Valves

Type: Electronically controlled exhaust flap

Location: Integrated into muffler

Part Number: 18107545260

Operating Voltage: 12 V

Response Time: 0.5 seconds

Diagnostic Specifications

Error Codes

P0420
P0430
P0135
P0141

Diagnostic Tool: BMW DIS or INPA

Sensor Resistance: 6-20 ohms

Voltage Range: 0.1-0.9 V

inspection Interval: Every 15,000 miles

Service Information Service

Detailed service requirements and schedules for the exhaust system

15,000

Inspect exhaust system for leaks
Check oxygen sensor functionality
Inspect exhaust hangers and mounts

Replace any damaged components immediately

30,000

Inspect catalytic converter efficiency
Check exhaust valve operation
Inspect and clean exhaust tips

Use BMW-approved cleaning products

60,000

Replace oxygen sensors
Inspect and replace exhaust gaskets if necessary
Check exhaust pipe integrity

Follow torque specifications for all bolts

100,000

Replace catalytic converters if efficiency drops below 90%
Inspect and replace muffler if necessary
Check entire exhaust system for corrosion

Use OEM parts for replacements

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the diameter of the exhaust pipes on the 2001-2008 BMW 760i?

The exhaust pipes on the 2001-2008 BMW 760i have an outer diameter of 70mm (2.75 inches). This size is optimized for the V12 engine's exhaust flow requirements.

What material is used for the exhaust system on the BMW 760i?

The exhaust system is constructed from high-quality stainless steel, which provides excellent corrosion resistance and durability, ensuring long-term performance under various driving conditions.

Does the BMW 760i exhaust system include a catalytic converter?

Yes, the exhaust system includes two primary catalytic converters, one for each bank of the V12 engine. These converters are designed to meet strict emissions standards and are located close to the exhaust manifolds for optimal efficiency.

What is the recommended service interval for 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.

Can aftermarket exhaust systems affect the vehicle's warranty?

Installing an aftermarket exhaust system may void certain aspects of the vehicle's warranty, particularly if the modification leads to damage or failure of related components. Always consult your BMW dealership before making modifications.

What is the backpressure specification for the exhaust system?

The backpressure for the BMW 760i exhaust system should not exceed 0.5 psi at idle and 2.5 psi at 3000 RPM. Excessive backpressure can 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 760i Exhaust System Service Manual

Coming Soon

Official BMW service manual detailing exhaust system maintenance, repair procedures, and specifications for the 2001-2008 760i.

Exhaust System Replacement Parts Guide

Coming Soon

Comprehensive guide to genuine BMW exhaust system components, including part numbers and compatibility information.

Emissions Compliance and Catalytic Converter Information

Coming Soon

Detailed information on emissions standards, catalytic converter function, and compliance for the BMW 760i.

Exhaust System Troubleshooting Guide

Coming Soon

Step-by-step troubleshooting guide for common exhaust system issues, including noise, leaks, and performance problems.

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