Dodge Ram 1500 2002-2008

Dodge Ram 1500 2002-2008 68RFE Transmission Specifications

This document provides detailed technical specifications for the 68RFE transmission used in the 2002-2008 Dodge RAM 1500. It includes gear ratios, torque capacity, fluid requirements, and maintenance intervals. These specifications are essential for owners, mechanics, and enthusiasts to understand the transmission's performance, ensure proper maintenance, and identify compatibility for repairs or upgrades. The data is sourced from official service manuals and technical guides, offering reliable and accurate information for troubleshooting, servicing, or enhancing the transmission's longevity and efficiency.

Updated Jan 22, 2025

Overview Specifications

This document provides detailed specifications and technical information about the 68RFE transmission used in the 2002-2008 Dodge RAM 1500. It is designed to assist mechanics, enthusiasts, and owners in understanding the transmission's features, maintenance requirements, and performance capabilities. Use the search and navigation instructions to quickly find relevant information or explore the sections for in-depth details.

How to Use

Use the search bar to enter keywords related to the 68RFE transmission, such as 'torque capacity' or 'gear ratios'. Results will highlight relevant sections and subsections for quick access.

Scroll through the document or use the table of contents to jump to specific sections. Each section is organized into subsections with detailed technical points for easy reference.

Key Specifications

▲

Torque Capacity

650 lb-ft

■

Gear Ratios

3.23:1 to 0.63:1

●

Fluid Capacity

14 quarts

◆

Towing Capacity

16,000 lbs

★

Service Interval

60,000 miles

Available Specifications

General Specifications

This section covers the basic technical details of the 68RFE transmission, including its design, compatibility, and key features. It provides an overview of the transmission's capabilities and intended use in the Dodge RAM 1500.

Design and Compatibility

6-speed automatic transmission
Designed for heavy-duty applications
Compatible with 2002-2008 Dodge RAM 1500 models
Integrated with Cummins diesel engines
Features a lock-up torque converter
Includes overdrive for improved fuel efficiency

Key Features

Electronic shift control for precise gear changes
Adaptive learning capability for driver behavior
High torque capacity for towing and hauling
Durable construction for long-term reliability
Includes a tow/haul mode for heavy loads
Equipped with a fail-safe limp mode

Performance Specifications

This section outlines the performance metrics of the 68RFE transmission, including torque capacity, gear ratios, and shift points. It provides insights into how the transmission enhances the driving experience and vehicle performance.

Torque and Power Handling

Maximum torque capacity: 650 lb-ft
Designed to handle high horsepower engines
Optimized for towing up to 16,000 lbs
Robust clutch packs for heavy-duty use
Enhanced cooling system for sustained performance
Supports high-performance aftermarket upgrades

Gear Ratios and Shift Points

First gear ratio: 3.23:1
Second gear ratio: 1.84:1
Third gear ratio: 1.41:1
Fourth gear ratio: 1.00:1
Fifth gear ratio: 0.81:1
Sixth gear ratio: 0.63:1

Maintenance and Service

This section provides guidelines for maintaining and servicing the 68RFE transmission. It includes recommended service intervals, fluid specifications, and common troubleshooting tips to ensure optimal performance and longevity.

Service Intervals

Fluid and filter change every 60,000 miles
Inspect transmission mounts and linkages annually
Check for leaks and wear during routine maintenance
Replace worn clutch packs as needed
Monitor transmission temperature regularly
Perform software updates for shift calibration

Fluid Specifications

Use ATF+4 transmission fluid
Fluid capacity: 14 quarts (with torque converter)
Avoid mixing different fluid types
Check fluid level with engine running
Fluid should be clear and free of debris
Replace fluid if discolored or burnt

Search Specifications

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Transmission Specifications

Overview

Type: Automatic

Configuration: 6-speed

Platform: Chrysler Group

Material: Aluminum and steel

Location: Rear-wheel drive

Model Years: 2002-2008

Dimensions

Length: 28.5 inches (724 mm)

Width: 22.3 inches (566 mm)

Height: 18.7 inches (475 mm)

Weight: 220 lbs (99.8 kg)

input Shaft Length: 12.4 inches (315 mm)

Output Shaft Length: 14.2 inches (361 mm)

Fluid Capacity: 12 quarts (11.4 liters)

Materials

Housing: Aluminum alloy

Gears: Hardened steel

Clutches: Composite friction material

Shafts: High-strength steel

Seals: Viton rubber

Features

Transmission Control

Electronic shift control
Adaptive shift scheduling
Manual shift mode
Tow/Haul mode

Performance

Wide gear ratio spread
Optimized shift points
Reduced shift shock
Enhanced torque capacity

Durability

Heavy-duty clutch packs
Reinforced gear sets
High-capacity cooling system
Robust internal components

Efficiency

Reduced internal friction
Optimized fluid flow
Lightweight design
Improved fuel economy

integration

Compatible with Cummins diesel engines
Integrated torque converter
Seamless powertrain communication
Factory-tuned calibration

Safety Features

Electronic Protection

Overheat protection
Overload detection
Fail-safe mode

Mechanical Protection

Shear-resistant gears
Reinforced housing
High-strength bolts

Driver Assistance

Shift interlock system
Neutral safety switch
Park lock mechanism

Comfort Features

Shift Quality

Smooth gear transitions
Reduced noise and vibration
Predictable shift behavior

Driving Modes

Normal mode
Tow/Haul mode
Manual mode

Climate Control

Integrated transmission cooler
Thermostatically controlled fluid flow
Efficient heat dissipation

Accessories

Cooling

Transmission cooler kit
Auxiliary fan
Thermostatic valve

Performance

Shift improvement kit
Heavy-duty torque converter
Upgraded clutch packs

Maintenance

Fluid change kit
Filter replacement kit
Seal and gasket set

Maintenance

Service interval: Every 30,000 miles or 24 months

Service Items

Fluid and filter change
Pan gasket inspection
Shift linkage adjustment
Cooler line inspection
Torque converter check

Maintenance Notes: Use only Mopar ATF+4 fluid for optimal performance and longevity.

Warranty

Basic: Miles: 36,000
Years: 3
Coverage: Bumper-to-bumper

Powertrain: Miles: 60,000
Years: 5
Coverage: Transmission and drivetrain

Corrosion: Miles: 100,000
Years: 5
Coverage: Perforation only

Emissions: Miles: 80,000
Years: 8
Coverage: Federal emissions components

Production Details

Manufacturer: Chrysler Group LLC

Manufacturing Process

Casting of aluminum housing
CNC machining of gears
Heat treatment of steel components
Automated assembly

Quality Control: inspection: 100% component testing
Testing: Dyno and road simulation
Certification: ISO 9001 compliant

Sustainability

Recycled materials in housing
Energy-efficient manufacturing
Low-emission processes

Production Metrics: Units Per Year: Approx. 500,000
Lead Time: 4-6 weeks
Defect Rate: Less than 0.1%

Service Information for 68rfe transmission Service

Maintenance and service requirements specific to this component

30,000

Inspect fluid level and condition
Replace transmission filter
Check for leaks
Inspect cooler lines
Adjust shift linkage

Use only Mopar ATF+4 fluid for optimal performance.

60,000

Flush transmission fluid
Replace pan gasket
Inspect torque converter
Check electronic controls
Test shift quality

Ensure proper calibration of electronic shift control.

100,000

Overhaul transmission
Replace clutch packs
Inspect and replace seals
Test cooling system
Verify torque converter operation

Major service requires specialized tools and expertise.

Common Questions

Find answers to common questions about torque specifications

Is the 68RFE transmission compatible with other Dodge models?

The 68RFE transmission is specifically designed for the 2002-2008 Dodge RAM 1500 with a 6.7L Cummins diesel engine. It is not compatible with other Dodge models or engines due to differences in mounting points, torque requirements, and electronic controls. Always verify compatibility using your vehicle's VIN and consult a professional before attempting any modifications.

What are the maintenance requirements for the 68RFE transmission?

The 68RFE transmission requires regular maintenance to ensure longevity. This includes changing the transmission fluid and filter every 30,000 to 50,000 miles, inspecting for leaks, and ensuring proper fluid levels. Use only manufacturer-recommended fluids. Additionally, monitor for signs of wear, such as slipping or delayed shifts, and address issues promptly to avoid costly repairs.

How do I replace the 68RFE transmission in my Dodge RAM 1500?

Replacing the 68RFE transmission involves several steps: disconnect the battery, remove the driveshaft, drain the transmission fluid, disconnect electrical connectors and linkage, and unbolt the transmission from the engine. Use a transmission jack to safely lower and remove the unit. Installation is the reverse process, ensuring proper alignment and torque specifications. Always refer to the service manual for detailed instructions.

What should I do if my 68RFE transmission is slipping or not shifting properly?

If your 68RFE transmission is slipping or not shifting properly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause these issues. Inspect for leaks, damaged wiring, or faulty sensors. If the problem persists, perform a diagnostic scan to identify error codes. Common solutions include replacing the solenoid pack, valve body, or performing a transmission flush.

How can I optimize the performance of my 68RFE transmission?

To optimize the 68RFE transmission's performance, use high-quality synthetic transmission fluid and ensure regular maintenance. Consider upgrading the valve body or torque converter for improved durability and shifting. Avoid excessive towing or heavy loads without proper cooling modifications. Installing a transmission temperature gauge can help monitor and prevent overheating, which is critical for longevity.

Factory Service Resources

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

68RFE Transmission Service Manual

Coming Soon

This manual provides detailed instructions for servicing, repairing, and maintaining the 68RFE transmission, including torque specifications and diagnostic procedures.

68RFE Technical Service Bulletin (TSB)

Coming Soon

This TSB addresses common issues and updates for the 68RFE transmission, including software updates and recommended repair procedures.

68RFE Parts and Accessories Catalog

Coming Soon

This catalog lists all available parts and accessories for the 68RFE transmission, including OEM and aftermarket options, with part numbers and descriptions.

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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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