BMW 535i 2017-present Exhaust Specifications
BMW 535i 2017-present

BMW 535i 2017-present Exhaust Specifications

Comprehensive technical guide for the 2017-Present BMW 535I exhaust system, including detailed specifications, maintenance tips, and troubleshooting for the exhaust manifold, catalytic converter, muffler, and tailpipe.

Updated

Overview Specifications

Comprehensive description of the exhaust specifications for the 2017-Present BMW 535I, 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

70 mm

Backpressure

<1.5 psi

Catalytic Converter Temperature

Up to 900°C

Exhaust Flow Rate

450 CFM

Emissions Standard

Euro 6

Available Specifications

Exhaust System Overview

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

Exhaust System Components
  • Twin-pipe exhaust system with dual tailpipes
  • Stainless steel construction for durability and corrosion resistance
  • Integrated catalytic converters for emissions control
  • Resonator and muffler for noise reduction
  • Exhaust gas temperature sensors for monitoring
Exhaust System Layout
  • Front-mounted catalytic converters for optimal emissions control
  • Mid-section resonator for sound tuning
  • Rear-mounted muffler for noise reduction
  • Exhaust pipes with a diameter of 70 mm
  • Dual tailpipes with chrome-plated tips

Note: The exhaust system is designed to minimize backpressure and optimize engine performance.

Exhaust System Materials

This section details the materials used in the construction of the exhaust system and their properties.

Material Specifications
  • Stainless steel exhaust pipes with a thickness of 1.5 mm
  • High-temperature resistant ceramic catalytic converters
  • Aluminized steel muffler for heat resistance
  • Chrome-plated tailpipes for aesthetic appeal
  • Rubber hangers with reinforced steel brackets
Material Properties
  • Stainless steel provides excellent corrosion resistance and durability
  • Ceramic catalytic converters withstand temperatures up to 900°C
  • Aluminized steel offers superior heat dissipation
  • Chrome plating enhances appearance and resists tarnishing
  • Rubber hangers reduce vibration and noise transmission

Note: The materials are selected to ensure longevity and performance under extreme conditions.

Exhaust System Performance

This section covers the performance characteristics of the exhaust system, including flow rates, backpressure, and emissions.

Flow and Backpressure
  • Exhaust flow rate of 450 CFM (cubic feet per minute)
  • Backpressure maintained below 1.5 psi
  • Optimized pipe diameter for efficient gas flow
  • Low-restriction muffler design
  • Balanced resonator for smooth exhaust flow
Emissions and Compliance
  • Meets Euro 6 emissions standards
  • Catalytic converters reduce CO emissions by 95%
  • NOx emissions reduced by 90%
  • OBD-II compliant for emissions monitoring
  • Designed for low particulate matter output

Note: The exhaust system is engineered to meet stringent global emissions regulations.

Maintenance and Service

This section provides guidelines for maintaining and servicing the exhaust system to ensure optimal performance.

Routine Maintenance
  • Inspect exhaust system for leaks every 15,000 miles
  • Check hangers and brackets for wear and tear
  • Clean chrome tailpipes to prevent corrosion
  • Monitor exhaust gas temperature sensors
  • Replace catalytic converters every 100,000 miles
Service Procedures
  • Use torque wrench to tighten exhaust clamps to 25 Nm
  • Replace gaskets during exhaust component replacement
  • Inspect and clean oxygen sensors every 30,000 miles
  • Check for exhaust system alignment after service
  • Use OEM parts for replacements to ensure compatibility

Note: Regular maintenance is essential to prevent performance degradation and ensure compliance with emissions standards.

Component Specifications

General Specifications

System Type
Twin-pipe exhaust system with dual tailpipes
Material
Stainless steel
Weight
22.5 kg
Compliance
Euro 6 emissions standard

Exhaust Manifold

Material
Cast iron
Part Number
11627586945
Bolt Torque
25 Nm + 90°
Gasket Part Number
11627586946
Heat Shield Material
Aluminized steel

Catalytic Converter

Type
Three-way catalytic converter
Part Number
18307586947
Efficiency
>98%
Operating Temperature
400-800°C
Replacement interval
120,000 miles

Oxygen Sensors

Upstream Sensor Part Number
11787586948
Downstream Sensor Part Number
11787586949
Operating Voltage
0.1-0.9 V
Response Time
<100 ms
Replacement interval
100,000 miles

Muffler

Type
Dual-chamber muffler
Part Number
18107586950
Material
Stainless steel
Noise Reduction
25 dB
Mounting Bolt Torque
40 Nm

Exhaust Pipes

Diameter
70 mm
Material
Stainless steel
Wall Thickness
1.5 mm
Flex Pipe Part Number
18107586951
Clamp Torque
15 Nm

Exhaust Tips

Material
Chrome-plated stainless steel
Diameter
90 mm
Part Number
18107586952
Mounting Bolt Torque
10 Nm

Heat Shields

Material
Aluminized steel
Thickness
1.2 mm
Part Number
18107586953
Mounting Bolt Torque
8 Nm

Emission Control

System Type
Exhaust Gas Recirculation (EGR) with Diesel Particulate Filter (DPF)
Egr Valve Part Number
11787586954
Dpf Part Number
18307586955
Regeneration Temperature
600°C
Replacement interval
150,000 miles

Diagnostic Specifications

Error Codes
  • P0420
  • P0430
  • P0171
  • P0174
Diagnostic Tool
BMW ISTA
Sensor Check interval
Every 30,000 miles
Emission Test interval
Every 24 months

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 for damage

Ensure all bolts and clamps are tightened to specified torque

60,000 miles
48 months
  • Replace oxygen sensors
  • Inspect and clean EGR valve
  • Check DPF for clogging

Use OEM parts for replacements

120,000 miles
96 months
  • Replace catalytic converter
  • Inspect and replace exhaust gaskets
  • Check muffler and pipes for corrosion

Perform emission test after replacement

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What is the exhaust system configuration for the 2017-Present BMW 535i?

The 2017-Present BMW 535i features a dual exhaust system with a single turbocharger. The system includes a catalytic converter, resonator, and muffler, with stainless steel piping measuring 2.5 inches in diameter. The exhaust tips are chrome-plated and measure 3.0 inches in diameter.

Q2

What type of catalytic converter is used in the BMW 535i exhaust system?

The BMW 535i uses a high-efficiency three-way catalytic converter with a ceramic monolith substrate. It is designed to reduce emissions of CO, NOx, and hydrocarbons, meeting Euro 6 and EPA Tier 3 emissions standards.

Q3

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 and hangers are secure. Replacement of components like the catalytic converter or muffler should only be done if damage or excessive wear is detected.

Q4

Can aftermarket exhaust systems affect the vehicle's warranty?

Yes, installing an aftermarket exhaust system may void the warranty on related components, such as the engine or emissions system, if the modification is found to cause damage or non-compliance with emissions regulations. Always consult your BMW dealer before making modifications.

Q5

What is the backpressure specification for the BMW 535i exhaust system?

The backpressure in the BMW 535i exhaust system should not exceed 1.5 psi at idle and 3.0 psi at 3,000 RPM. Excessive backpressure can indicate a blockage or restriction, such as a clogged catalytic converter or damaged muffler.

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 535i Exhaust System Service Manual

Coming Soon

Official BMW service manual detailing exhaust system maintenance, repair procedures, and specifications for the 2017-Present 535i.

Exhaust System Inspection Checklist

Coming Soon

A comprehensive checklist for inspecting the exhaust system, including visual checks, pressure tests, and component replacement guidelines.

Genuine BMW Exhaust Parts Catalog

Coming Soon

Catalog of genuine BMW exhaust components, including part numbers, pricing, and compatibility information for the 535i.

Emissions Compliance Guide

Coming Soon

Detailed guide on maintaining emissions compliance for the BMW 535i, including information on catalytic converters and exhaust system modifications.

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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