Mercedes-Benz Mercedes CLK 1997-2002 3.2L V6 Engine Engine Specifications
Mercedes-Benz Mercedes CLK 1997-2002

Mercedes-Benz Mercedes CLK 1997-2002 3.2L V6 Engine Specifications

Explore the detailed 3.2L V6 engine specifications for the 1997-2002 Mercedes CLK. Learn about horsepower, torque, fuel system, and more for performance optimization and maintenance.

Updated

Overview Specifications

This document provides detailed technical specifications and operational insights for the 3.2L V6 engine used in the 1997-2002 Mercedes-Benz CLK models. Designed for automotive enthusiasts, mechanics, and owners, it covers engine performance, maintenance requirements, and key technical data. Use this guide to understand the engine's capabilities, optimize its performance, and ensure proper care. The sections are organized to help you quickly find relevant information, whether you're performing routine maintenance or exploring the engine's technical features.

How to Use

Use the search function to locate specific terms or phrases within the document. Enter keywords related to the engine's components, performance metrics, or maintenance procedures to quickly find relevant information.

Navigate through the document using the table of contents or section headings. Each major section is divided into subsections for easy access to specific details about the engine's design, performance, and maintenance.

Key Specifications

Displacement

3.2 liters

Max Power

218 HP

Max Torque

229 lb-ft

Fuel System

Electronic Fuel Injection

Compression Ratio

10.0:1

Available Specifications

Engine Design

This section covers the fundamental design characteristics of the 3.2L V6 engine, including its architecture, materials, and key components. Learn about the engine's construction and how its design contributes to performance and reliability.

Architecture and Configuration
  • 60-degree V6 configuration
  • Aluminum alloy engine block and cylinder heads
  • Dual overhead camshafts (DOHC)
  • 24-valve setup for optimized airflow
  • Chain-driven camshafts for durability
  • Integrated balance shafts for smooth operation
Key Components
  • Forged steel crankshaft
  • High-strength connecting rods
  • Aluminum pistons with low-friction coatings
  • Hydraulic lifters for reduced maintenance
  • Variable intake manifold for improved performance
  • Electronic throttle control system

Performance Specifications

Explore the performance capabilities of the 3.2L V6 engine, including horsepower, torque, and fuel efficiency. This section provides detailed metrics to help you understand the engine's power delivery and overall efficiency.

Power and Torque
  • 218 horsepower at 5,700 RPM
  • 229 lb-ft of torque at 3,000-4,600 RPM
  • Peak power achieved at mid to high RPM range
  • Smooth power delivery across the rev range
  • Optimized for both city and highway driving
  • Compatible with premium unleaded fuel
Fuel Efficiency
  • EPA-estimated 17 MPG city
  • EPA-estimated 24 MPG highway
  • Combined fuel economy of 20 MPG
  • Electronic fuel injection system
  • Adaptive fuel mapping for efficiency
  • Emissions compliant with U.S. standards

Maintenance and Care

This section provides essential maintenance guidelines to keep the 3.2L V6 engine running smoothly. Learn about recommended service intervals, common maintenance tasks, and tips for prolonging engine life.

Service Intervals
  • Oil change every 7,500 miles or 6 months
  • Spark plug replacement every 60,000 miles
  • Air filter inspection every 15,000 miles
  • Coolant flush every 30,000 miles
  • Timing chain inspection at 100,000 miles
  • Regular belt and hose checks
Common Maintenance Tasks
  • Monitor oil levels and quality
  • Check for leaks in the cooling system
  • Inspect and clean the throttle body
  • Replace worn engine mounts
  • Verify proper operation of the fuel system
  • Use OEM or high-quality replacement parts

Engine Specifications

Overview

Type
V6
Configuration
60-degree V-angle
Platform
M112
Material
Aluminum block and heads
Location
Front, longitudinal

Dimensions

Length
22.8 in (579 mm)
Width
28.3 in (719 mm)
Height
27.6 in (701 mm)
Weight
375 lbs (170 kg)
Displacement
3.2 liters (3199 cc)
Bore
89.9 mm (3.54 in)
Stroke
84.0 mm (3.31 in)

Materials

Engine Block
Aluminum alloy
Cylinder Heads
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
  • Distributorless ignition system
  • Coil-on-plug
  • Knock control
Cooling System
  • Electric cooling fan
  • Thermostatically controlled
  • Cross-flow radiator
Lubrication System
  • Full-flow oil filter
  • Pressure-fed oiling system
  • Oil cooler
Emissions Control
  • Catalytic converter
  • Exhaust gas recirculation
  • Onboard diagnostics (OBD-II)

Safety Features

Engine Protection
  • Overheat protection
  • Low oil pressure shutdown
Electronic Controls
  • Traction control system
  • Electronic stability program

Comfort Features

Noise Reduction
  • Acoustic engine cover
  • Hydraulic engine mounts
Vibration Control
  • Balanced crankshaft
  • Dual-mass flywheel

Accessories

Belts And Pulleys
  • Serpentine belt
  • Tensioner pulley
  • Idler pulley
Hoses And Clamps
  • Coolant hoses
  • Vacuum hoses
  • Clamps
Filters
  • Air filter
  • Oil filter
  • Fuel filter

Maintenance

Service interval
10,000 miles or 12 months
Service Items
  • Oil and filter change
  • Air filter inspection
  • Spark plug replacement
  • Coolant flush
  • Timing belt inspection
Maintenance Notes
Use synthetic oil for optimal performance

Warranty

Basic Warranty
Years: 4
Miles: 50,000
Coverage: Bumper-to-bumper
Powertrain Warranty
Years: 5
Miles: 100,000
Coverage: Engine and transmission
Corrosion Warranty
Years: 7
Miles: Unlimited
Coverage: Perforation from rust
Roadside Assistance
Years: 4
Miles: 50,000
Coverage: 24/7 towing and assistance

Production Details

Manufacturer
Mercedes-Benz
Manufacturing Process
  • Casting
  • Machining
  • Assembly
Quality Control
inspection: 100% engine testing
Tolerance: Precision machining
Sustainability Practices
  • Recycling of aluminum scrap
  • Emission-controlled manufacturing
Production Metrics
Units Per Year: 50,000
Defect Rate: Less than 0.1%

Service Information for 3.2l v6 engine Service

Maintenance and service requirements specific to this component

10,000
12
  • Oil and filter change
  • Air filter inspection
  • Spark plug inspection
  • Coolant level check
  • Belt and hose inspection

Use Mercedes-Benz approved fluids and parts

30,000
36
  • Fuel filter replacement
  • Cabin air filter replacement
  • Brake fluid flush
  • Coolant flush
  • Ignition system check

Ensure all connections are secure after service

60,000
72
  • Timing belt replacement
  • Water pump replacement
  • Transmission fluid change
  • Comprehensive engine inspection
  • Exhaust system check

Critical to replace timing belt to prevent engine damage

Common Questions

Find answers to common questions about torque specifications

Q1

Is the 3.2L V6 engine compatible with other Mercedes models?

The 3.2L V6 engine, also known as the M112 engine, is primarily designed for the 1997-2002 Mercedes CLK series. However, it is also compatible with other Mercedes models like the C-Class (W203), E-Class (W210), and SLK (R170). Compatibility depends on the specific model year and configuration. Always verify with your vehicle’s manual or a certified technician before attempting any cross-model installation.

Q2

What are the maintenance requirements for the 3.2L V6 engine?

The 3.2L V6 engine requires regular maintenance to ensure optimal performance. Key tasks include oil changes every 7,500-10,000 miles, spark plug replacement every 60,000 miles, and timing belt inspection every 100,000 miles. Additionally, check the coolant system, air filters, and fuel injectors periodically. Adhering to Mercedes-Benz’s recommended service schedule is crucial for longevity.

Q3

How do I replace the 3.2L V6 engine in my Mercedes CLK?

Replacing the 3.2L V6 engine involves several steps: disconnect the battery, drain fluids, remove the intake manifold, detach wiring harnesses, and unbolt the engine mounts. Use a hoist to lift the engine out of the vehicle. Installation is the reverse process. Ensure all connections are secure and fluids are refilled. Professional assistance is recommended for this complex procedure.

Q4

What should I do if my 3.2L V6 engine is overheating?

Overheating in the 3.2L V6 engine can result from coolant leaks, a faulty thermostat, or a failing water pump. First, check coolant levels and inspect for leaks. Test the thermostat and water pump functionality. If the issue persists, inspect the radiator and hoses for blockages or damage. Seek professional help if the problem cannot be resolved.

Q5

How can I optimize the performance of my 3.2L V6 engine?

To optimize the 3.2L V6 engine’s performance, use high-quality synthetic oil, ensure proper air intake with clean filters, and upgrade the exhaust system for better airflow. Regular tuning and ECU remapping can also enhance power and fuel efficiency. Avoid aggressive driving and adhere to maintenance schedules to maintain peak performance.

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 CLK 3.2L V6 Engine Service Manual

Coming Soon

This manual provides detailed instructions for servicing and maintaining the 3.2L V6 engine in the 1997-2002 Mercedes CLK. It includes diagrams, specifications, and troubleshooting tips.

Technical Service Bulletin for M112 Engine Updates

Coming Soon

This bulletin outlines updates and fixes for common issues in the M112 3.2L V6 engine, including software updates and part replacements.

Mercedes CLK 3.2L V6 Parts Catalog

Coming Soon

A comprehensive catalog of OEM and aftermarket parts for the 3.2L V6 engine, including part numbers, descriptions, and compatibility information.

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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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About the Author

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Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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