Mercedes-Benz Mercedes SL 2001-2012 3.7L V6 Engine Specifications
Explore detailed technical specifications for the 3.7L V6 engine in the 2001-2012 Mercedes SL. Learn about horsepower, torque, maintenance, and performance upgrades for optimal engine care and performance.
Overview Specifications
This document provides detailed specifications and technical information about the 3.7L V6 engine used in the Mercedes SL models from 2001 to 2012. It is designed for enthusiasts, mechanics, and researchers seeking comprehensive data on the engine's performance, design, and maintenance. Use the navigation instructions to explore sections or search for specific details. Each section is organized to provide clear and concise information, making it easy to find the data you need.
How to Use
Use the search bar to find specific terms or keywords related to the 3.7L V6 engine. This feature helps locate detailed information quickly, such as horsepower or torque values.
Scroll through the document or use the table of contents to jump to specific sections. Each section is labeled clearly, and subsections provide detailed technical points for easy reference.
Key Specifications
Displacement
3.7L
Horsepower
245 HP
Torque
258 lb-ft
Fuel System
Multi-port injection
Transmission
5-speed automatic
Available Specifications
Engine Design
This section covers the design and architecture of the 3.7L V6 engine, including its layout, materials, and key components. Learn about the engineering principles that make this engine efficient and reliable.
Engine Design
This section covers the design and architecture of the 3.7L V6 engine, including its layout, materials, and key components. Learn about the engineering principles that make this engine efficient and reliable.
Cylinder Configuration
- V6 configuration with 60-degree bank angle
- Aluminum alloy block and cylinder heads
- DOHC (Dual Overhead Camshaft) design
- 24 valves for optimal airflow
- Integrated balance shafts for smooth operation
- Lightweight construction for improved performance
Fuel System
- Sequential multi-port fuel injection
- Electronic throttle control system
- Optimized fuel delivery for efficiency
- High-pressure fuel pump
- Designed for premium unleaded gasoline
- Compliant with emission standards
Performance Specifications
Discover the performance metrics of the 3.7L V6 engine, including horsepower, torque, and acceleration. This section highlights the engine's capabilities and how it enhances the driving experience of the Mercedes SL.
Performance Specifications
Discover the performance metrics of the 3.7L V6 engine, including horsepower, torque, and acceleration. This section highlights the engine's capabilities and how it enhances the driving experience of the Mercedes SL.
Power Output
- 245 horsepower at 5,700 RPM
- 258 lb-ft of torque at 3,000 RPM
- Redline at 6,200 RPM
- Smooth power delivery across the rev range
- Optimized for both city and highway driving
- Enhanced with variable valve timing
Acceleration
- 0-60 mph in 6.5 seconds
- Top speed of 155 mph (electronically limited)
- Responsive throttle for quick acceleration
- Paired with a 5-speed automatic transmission
- Adaptive shift logic for optimal performance
- Designed for dynamic driving conditions
Maintenance and Reliability
This section provides essential information on maintaining the 3.7L V6 engine, including service intervals, common issues, and tips for ensuring longevity. Learn how to keep the engine running at peak performance.
Maintenance and Reliability
This section provides essential information on maintaining the 3.7L V6 engine, including service intervals, common issues, and tips for ensuring longevity. Learn how to keep the engine running at peak performance.
Service Intervals
- Oil change every 10,000 miles
- Spark plug replacement every 60,000 miles
- Timing belt inspection every 90,000 miles
- Regular coolant and fluid checks
- Air filter replacement every 30,000 miles
- Adherence to Mercedes-Benz service schedule
Common Issues
- Potential oil leaks from gaskets
- Throttle body cleaning required periodically
- Ignition coil failures in rare cases
- Regular inspection of electrical components
- Monitoring of engine temperature
- Ensuring proper fuel system maintenance
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Engine Specifications
Overview
- Type
- V6
- Configuration
- Naturally Aspirated
- Platform
- Mercedes M112
- Material
- Aluminum Alloy
- Location
- Front, Longitudinal
Dimensions
- Displacement
- 3.7 liters (3724 cc)
- Bore
- 89.9 mm (3.54 in)
- Stroke
- 84.0 mm (3.31 in)
- Length
- 620 mm (24.41 in)
- Width
- 720 mm (28.35 in)
- Height
- 680 mm (26.77 in)
- Weight
- 180 kg (397 lbs)
Materials
- Block
- Aluminum Alloy
- Cylinder Head
- Aluminum Alloy
- Pistons
- Forged Aluminum
- Crankshaft
- Forged Steel
- Valves
- Stainless Steel
Features
- Fuel System
-
- Sequential Multi-Point Fuel Injection
- Electronic Throttle Control
- Variable Intake Manifold
- Ignition System
-
- Direct Ignition System
- Platinum Spark Plugs
- Knock Control
- Cooling System
-
- Liquid Cooled
- Electric Cooling Fan
- Thermostatic Control
- Emissions Control
-
- Catalytic Converter
- Exhaust Gas Recirculation
- Oxygen Sensors
- Performance
-
- 225 hp @ 5700 rpm
- 258 lb-ft @ 3000 rpm
- Redline at 6000 rpm
Safety Features
- Engine Protection
-
- Oil Pressure Sensor
- Coolant Temperature Sensor
- Over-rev Protection
- Emissions
-
- OBD-II Compliance
- Evaporative Emissions Control
Comfort Features
- Noise Reduction
-
- Acoustic Engine Cover
- Hydraulic Engine Mounts
- Vibration Control
-
- Balanced Crankshaft
- Counter-Rotating Balance Shafts
Accessories
- Engine Components
-
- Serpentine Belt
- Alternator
- Starter Motor
- Cooling System
-
- Radiator
- Water Pump
- Coolant Reservoir
- Ignition System
-
- Ignition Coils
- Spark Plug Wires
- Distributor Cap
Maintenance
- Service interval
- Every 10,000 miles or 12 months
- Service Items
-
- Oil and Filter Change
- Air Filter Replacement
- Spark Plug Inspection
- Timing Belt Inspection
- Coolant Flush
- Maintenance Notes
- Use synthetic oil for optimal performance.
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Bumper to Bumper
- Powertrain
- Miles: 100,000Years: 7Coverage: Engine and Transmission
- Corrosion
- Miles: UnlimitedYears: 12Coverage: Perforation Only
- Emissions
- Miles: 50,000Years: 2Coverage: Federal Emissions Warranty
Production Details
- Manufacturer
- Mercedes-Benz
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% Engine TestingTolerance: Micron-Level Precision
- Sustainability
-
- Recyclable Materials
- Low Emission Manufacturing
- Production Metrics
- Units Per Year: 50,000Defect Rate: Less than 0.1%
Service Information for 3.7l v6 engine Service
Maintenance and service requirements specific to this component
- Oil and Filter Change
- Air Filter Inspection
- Spark Plug Check
- Coolant Level Check
- Belt and Hose Inspection
Use synthetic oil for optimal performance.
- Timing Belt Replacement
- Coolant Flush
- Fuel Filter Replacement
- Ignition System Check
- Exhaust System Inspection
Timing belt replacement critical at this interval.
- Engine Mount Check
- Water Pump Replacement
- Valve Clearance Adjustment
- Compression Test
- Emissions System Check
Major service interval, inspect all critical components.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 3.7L V6 engine compatible with other Mercedes models from 2001-2012?
Is the 3.7L V6 engine compatible with other Mercedes models from 2001-2012?
The 3.7L V6 engine, specifically the M112 engine, is primarily designed for the 2001-2012 Mercedes SL-Class (R230). While it shares similarities with other Mercedes engines, compatibility with other models depends on the specific chassis and engine management system. Always verify with a Mercedes-Benz dealer or technical guide before attempting cross-model installations.
Q2 What are the maintenance requirements for the 3.7L V6 engine?
What are the maintenance requirements for the 3.7L V6 engine?
The 3.7L V6 engine requires regular maintenance, including oil changes every 7,500-10,000 miles, spark plug replacement every 60,000 miles, and timing belt inspection every 90,000 miles. Additionally, coolant and transmission fluid should be checked and replaced as per the manufacturer's schedule. Regular inspections of the engine mounts, belts, and hoses are also recommended to ensure optimal performance.
Q3 How do I replace the 3.7L V6 engine in a 2001-2012 Mercedes SL?
How do I replace the 3.7L V6 engine in a 2001-2012 Mercedes SL?
Replacing the 3.7L V6 engine involves several steps: disconnect the battery, drain fluids, remove the intake manifold, detach the exhaust system, and unbolt the engine mounts. Use a hoist to lift the engine out. Installation is the reverse process, ensuring all connections are secure and torqued to specifications. Refer to the service manual for detailed instructions and torque values.
Q4 What are common troubleshooting steps for the 3.7L V6 engine?
What are common troubleshooting steps for the 3.7L V6 engine?
Common issues include rough idling, misfires, and oil leaks. Start by checking the ignition system (spark plugs, coils) and fuel injectors. Use an OBD-II scanner to identify error codes. Inspect for vacuum leaks and ensure the MAF sensor is clean. For oil leaks, check the valve cover gaskets and oil pan seals. Regular diagnostics can prevent major issues.
Q5 How can I optimize the performance of the 3.7L V6 engine?
How can I optimize the performance of the 3.7L V6 engine?
To optimize performance, use high-quality synthetic oil and premium fuel. Upgrade the air intake and exhaust systems for better airflow. Regularly clean the throttle body and replace the fuel filter. Consider a professional ECU tune for improved power and efficiency. Ensure the cooling system is functioning properly to prevent overheating during high-performance driving.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Mercedes SL-Class 2001-2012 Service Manual
Coming SoonComprehensive guide covering maintenance, repairs, and technical specifications for the SL-Class, including the 3.7L V6 engine.
Technical Service Bulletin for M112 Engine Updates
Coming SoonDetails updates and fixes for the M112 3.7L V6 engine, including software updates and part replacements.
Mercedes SL-Class Parts and Accessories Catalog
Coming SoonCatalog listing OEM and aftermarket parts for the 2001-2012 SL-Class, including engine components and performance upgrades.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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