Audi Audi S6 1999-2004

Audi Audi S6 1999-2004 4.2L Engine Specifications

Detailed technical specifications and documentation for the 4.2L V8 engine in the 1999-2004 Audi S6. Includes performance metrics, system details, and maintenance guidelines.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the 4.2l-engine specifications for the 1999-2004 Audi S6, including key features, measurements, and technical details

How to Use

Use the search function to locate specific 4.2l-engine specifications by entering keywords such as 'torque', 'horsepower', or 'compression ratio'.

Navigate through the documentation sections using the table of contents or by scrolling through the major sections and subsections.

Key Specifications

Displacement

4.2 liters (4172 cc)

Max Power

340 hp @ 7000 rpm

Max Torque

310 lb-ft @ 3400 rpm

Compression Ratio

11.0:1

Oil Capacity

7.5 liters (7.9 quarts)

Available Specifications

Engine Design and Configuration

Details about the design, layout, and configuration of the 4.2l V8 engine used in the 1999-2004 Audi S6

Engine Layout

90-degree V8 configuration
Aluminum alloy block and cylinder heads
DOHC (Dual Overhead Camshaft) design
32-valve setup (4 valves per cylinder)
Chain-driven camshafts

Displacement and Dimensions

Total displacement: 4.2 liters (4172 cc)
Bore: 84.5 mm
Stroke: 93.0 mm
Compression ratio: 11.0:1
Engine weight: ~220 kg (485 lbs)

Note: The aluminum construction reduces overall weight while maintaining structural integrity.

Performance Specifications

Technical details about the engine's performance, including power output, torque, and fuel delivery

Power and Torque

Maximum power: 340 hp @ 7000 rpm
Maximum torque: 310 lb-ft @ 3400 rpm
Redline: 7200 rpm
Fuel delivery: Sequential multi-port fuel injection
Throttle system: Electronic throttle control

Fuel and Emissions

Fuel type: Premium unleaded (91 octane or higher)
Fuel consumption (city): 14 mpg
Fuel consumption (highway): 21 mpg
Emissions compliance: Meets Euro 3 standards
Catalytic converter: Dual-stage design

Note: The engine is optimized for performance while maintaining compliance with emissions regulations.

Cooling and Lubrication Systems

Details about the cooling and lubrication systems that ensure optimal engine performance and longevity

Cooling System

Coolant capacity: 12.5 liters (13.2 quarts)
Radiator type: Aluminum cross-flow
Thermostat opening temperature: 87°C (189°F)
Coolant type: G12 (pink) antifreeze
Electric cooling fan with dual-speed control

Lubrication System

Oil capacity: 7.5 liters (7.9 quarts)
Oil type: Synthetic 5W-40
Oil filter type: Cartridge-style
Oil pump: Gear-driven, high-pressure design
Oil pressure: 2.5-4.5 bar at 2000 rpm

Note: Regular oil changes with the specified synthetic oil are critical for engine longevity.

Ignition and Electrical Systems

Technical details about the ignition system, sensors, and electrical components

Ignition System

Ignition type: Distributorless coil-on-plug
Spark plug type: Platinum-tipped
Spark plug gap: 0.8 mm
Ignition timing: Fully electronic control
Ignition coils: Individual per cylinder

Electrical System

Battery voltage: 12V
Alternator output: 120A
Starter motor power: 1.4 kW
ECU (Engine Control Unit): Bosch ME7.1
Sensors: Knock, oxygen, crankshaft position, and camshaft position

Note: The ECU provides precise control over ignition timing and fuel delivery for optimal performance.

Search Specifications

Search by specification name, value, or description

Engine Specifications

General information

Engine Code: AWN

Displacement: 4.2 liters (4172 cc)

Configuration: V8

Cylinder Bore: 84.5 mm

Piston Stroke: 93.0 mm

Compression Ratio: 11.0:1

Engine Orientation: Longitudinal

Fuel System: Sequential multi-port fuel injection

Performance

Max Power: 340 hp @ 7000 rpm

Max Torque: 310 lb-ft @ 3400 rpm

Redline: 7200 rpm

Fuel Type: Premium unleaded (91 octane or higher)

Emission Standards: EURO 3

Engine Block

Material: Aluminum alloy

Cylinder Liners: Cast iron

Main Bearing Caps: Cast iron with cross-bolted design

Part Number: 077 103 021 A

Cylinder Head

Material: Aluminum alloy

Valvetrain: DOHC, 5 valves per cylinder

Camshaft Drive: Timing chain

Part Number: 077 103 351 B

Pistons And Connecting Rods

Piston Material: Aluminum alloy

Piston Ring Material: Chrome-plated steel

Connecting Rod Material: Forged steel

Connecting Rod Length: 144 mm

Part Number Piston: 077 107 065 A

Part Number Connecting Rod: 077 105 425 C

Crankshaft

Material: Forged steel

Main Journal Diameter: 60 mm

Rod Journal Diameter: 50 mm

Part Number: 077 105 101 D

Lubrication System

Oil Capacity: 7.5 liters (with filter)

Oil Type: 5W-40 synthetic

Oil Pump Type: Gear-type

Oil Pressure: 2.0-4.5 bar at 2000 rpm

Part Number Oil Filter: 06B 115 561 B

Cooling System

Coolant Capacity: 12.0 liters

Coolant Type: G12 (pink)

Thermostat Opening Temperature: 87°C

Radiator Core Material: Aluminum

Part Number Water Pump: 077 121 011 C

Ignition System

Ignition Type: Distributorless

Spark Plug Type: NGK BKR6EKUB

Spark Plug Gap: 0.8 mm

Ignition Coil Part Number: 06B 905 115 E

Fuel System

Fuel Pump Pressure: 3.8 bar

injector Flow Rate: 280 cc/min

Fuel Filter Part Number: 8D0 201 511 A

Fuel Rail Material: Aluminum

Timing System

Timing Chain Type: Double-row

Chain Tensioner Type: Hydraulic

Camshaft Position Sensor Part Number: 06B 905 161

Timing Chain Guide Material: Plastic-reinforced

Diagnostic Specifications

Compression Pressure: 10-12 bar

Compression Variation Limit: 1.0 bar

Idle Speed: 680-720 rpm

Idle Co2 Emission: 0.2-1.5%

Fuel Trim Range: -10% to +10%

Maintenance Specifications

Spark Plug Replacement interval: 60,000 miles

Timing Chain Inspection Interval: 100,000 miles

Coolant Replacement interval: 5 years or 50,000 miles

Oil Change interval: 10,000 miles or 12 months

Service Information Service

Detailed service requirements and schedules for the 4.2L engine

10,000

Oil and filter change
Inspect timing chain tension
Check coolant level and condition

Use only Audi-approved synthetic oil and coolant

60,000

Replace spark plugs
Inspect ignition coils
Check fuel system pressure

Replace spark plugs with OEM-specified NGK BKR6EKUB

100,000

120

Inspect timing chain and guides
Replace coolant
Check engine mounts

Timing chain replacement may be required if excessive wear is detected

Common Questions

Find answers to common questions about torque specifications

What is the horsepower and torque output of the 4.2L V8 engine in the 1999-2004 Audi S6?

The 4.2L V8 engine in the 1999-2004 Audi S6 produces 340 horsepower at 7,000 RPM and 302 lb-ft of torque at 3,400 RPM. This engine features a DOHC (Dual Overhead Camshaft) design with 5 valves per cylinder for optimal performance.

What type of oil is recommended for the 4.2L V8 engine, and what is the oil capacity?

Audi recommends using fully synthetic 5W-40 engine oil that meets VW 502 00 specifications. The oil capacity for the 4.2L V8 engine is approximately 7.5 liters (7.9 quarts), including the oil filter.

What is the recommended service interval for the timing belt on the 4.2L V8 engine?

The timing belt on the 4.2L V8 engine should be replaced every 75,000 miles or 5 years, whichever comes first. Failure to replace the timing belt on time can result in catastrophic engine damage due to interference design.

What is the compression ratio of the 4.2L V8 engine, and what fuel octane is recommended?

The 4.2L V8 engine has a compression ratio of 11.0:1. Audi recommends using premium unleaded fuel with an octane rating of 91 or higher for optimal performance and to prevent engine knocking.

What is the firing order for the 4.2L V8 engine in the Audi S6?

The firing order for the 4.2L V8 engine is 1-5-4-8-6-3-7-2. This sequence ensures smooth engine operation and proper cylinder timing.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Audi 4.2L V8 Engine Technical Specifications

Coming Soon

Detailed technical specifications for the 4.2L V8 engine, including dimensions, performance data, and component details.

Timing Belt Replacement Guide for 4.2L V8 Engine

Coming Soon

Step-by-step guide for replacing the timing belt on the 4.2L V8 engine, including tools required and safety precautions.

Audi S6 4.2L V8 Maintenance Schedule

Coming Soon

Official maintenance schedule for the 1999-2004 Audi S6, including recommended service intervals and procedures.

Diagnosing Common Issues with the 4.2L V8 Engine

Coming Soon

Troubleshooting guide for common issues such as oil leaks, misfires, and timing belt failures in the 4.2L V8 engine.

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