45RFE, 5-45RFE, and 68RFE transmissions
The 45RFE, 5-45RFE, and 68RFE transmissions are popular choices for various Dodge, Jeep, and Ram vehicles. Whether you’re maintaining or upgrading these units, choosing the right parts can enhance performance, durability, and reliability. Upgrading and maintaining your 45RFE, 5-45RFE, or 68RFE transmission for achieving optimal performance and reliability. Whether you’re using your vehicle for daily driving, towing, or racing, these premium parts ensure long-lasting durability. Invest in high-quality components like the 68RFE Maraging Input Shaft, 68RFE Low Reverse Sprag Update, or 68RFE Smart-Tech Overdrive Clutch Housing Kit to meet the demands of any application.
Disclaimer:
The information provided in this content is for general consideration and guidance. It is essential to confirm the compatibility of the parts listed with your vehicle’s make, model, and year, as well as your specific performance expectations, directly with the supplier, TCS. Prices listed are accurate as of January 2025. For the most updated pricing and availability, please visit the relevant product category link in the menu on the TCS website or call customer service 1-800-960-1177.
45RFE Transmission
Introduction: Introduced in 1999, the 45RFE was designed for the Jeep Grand Cherokee with a 4.7L V8 engine.
Key Features:
4 forward gears, 1 reverse
Aluminum alloy case for reduced weight
Adaptive shift logic
Gear Ratios:
1st Gear: 3.00:1
2nd Gear: 1.67:1
3rd Gear: 1.00:1
4th Gear (Overdrive): 0.75:1
Reverse: 3.00:1
Common Applications: Jeep Grand Cherokee, Dodge Dakota, Dodge Durango
TCS Upgrades:
High-performance clutch packs
Reinforced valve bodies
Enhanced torque converter for better load management
45RFE 5-45RFE TRANSGO Reprogramming Kit
45RFE 5-45FRE Tech Manual
5-45RFE Transmission
Introduction: Evolved from the 45RFE, the 5-45RFE was introduced in 2001 with software modifications to provide a fifth gear.
Key Features:
5 forward gears, 1 reverse
Dual second-gear ratio (2nd Prime) for improved towing capacity
Advanced solenoid pack for precise shift control
Gear Ratios:
1st Gear: 3.00:1
2nd Gear: 1.67:1
2nd Prime: 1.50:1
3rd Gear: 1.00:1
4th Gear: 0.75:1
5th Gear (Overdrive): 0.67:1
Reverse: 3.00:1
Common Applications: Dodge Ram 1500, Jeep Grand Cherokee, Chrysler 300C
TCS Upgrades:
High-friction clutch materials
Heavy-duty band strut assemblies
Custom valve body recalibration kits for aggressive shifting
5-45RFE 68RFE Input Clutch Hub
5-45RFE 300M Input Shaft
68RFE Transmission
Introduction: Launched in 2007, the 68RFE was designed for heavy-duty applications, especially in RAM trucks equipped with Cummins diesel engines.
Key Features:
6 forward gears, 1 reverse
Designed for high torque loads (up to 750 lb-ft)
Integrated cooler circuit for thermal efficiency
Gear Ratios:
1st Gear: 3.23:1
2nd Gear: 1.83:1
3rd Gear: 1.41:1
4th Gear: 1.00:1
5th Gear: 0.82:1
6th Gear (Overdrive): 0.63:1
Reverse: 4.44:1
Common Applications: RAM 2500, RAM 3500 with 6.7L Cummins Turbo Diesel
TCS Upgrades:
Billet torque converters with multi-disc lock-up
High-capacity clutch drums
Reinforced planetary gear sets
Advanced valve bodies with high-flow solenoids
68RFE Billet Channel Plate (Late Model) 2019 – Current
68RFE Billet Channel Plate 2007-2018
68RFE Overdrive Hub Assembly
68RFE 300M Input Shaft
68RFE Maraging Input Shaft
68RFE 6.7L Flex Plate
68RFE Low Reverse Sprag Update
68RFE Bonded Valve Body Plate 2007-10
68RFE Bonded Valve Body Plate 2011-ON
68RFE 2007-ON Transmission Rebuild Kit Less O.D. Plates
68RFE 2007-ON Transmission Rebuild Kit w/Raybestos TORQ KITS
68RFE 2007-ON Transmission Rebuild Kit
68RFE Smart-Tech Overdrive Clutch Housing Kit
68RFE Tech Manual
TCS Performance Benefits
Increased Durability: TCS components are engineered to withstand extreme operating conditions, making them ideal for towing, racing, and off-road applications.
Improved Shift Quality: Custom valve body kits and solenoid packs enhance shift response and consistency.
Thermal Efficiency: Enhanced cooling circuits and materials reduce transmission overheating, extending lifespan.
Understanding the Transmissions
- 45RFE Transmission
The 45RFE is a 4-speed automatic transmission that suits moderate power applications, commonly found in Dodge Durangos and Jeep Grand Cherokees. A popular upgrade for this transmission is the 45RFE 5-45RFE TRANSGO Reprogramming Kit for $135.00 USD, which enhances shifting performance and reduces wear. - 5-45RFE Transmission
The 5-45RFE is an upgraded 5-speed version of the 45RFE, offering better fuel efficiency and performance. Owners can opt for the 5-45RFE 300M Input Shaft priced at $725.00 USD for a high-strength upgrade or the 5-45RFE 68RFE Input Clutch Hub at $775.00 USD for improved clutch engagement and durability. - 68RFE Transmission
The 68RFE, designed for heavy-duty applications, features 6 speeds and is found in diesel-powered Ram trucks. For enhanced performance, consider upgrading to the 68RFE Smart-Tech Overdrive Clutch Housing Kit for $820.00 USD or the 68RFE 300M Input Shaft for $595.00 USD, both of which increase torque handling capabilities.
Essential Replacement Parts
Torque Converters
- For improved power transfer and acceleration, pairing a high-performance torque converter with other upgrades like the 68RFE 6.7L Flex Plate ($350.00 USD) can reduce drivetrain stress and increase reliability.
Valve Bodies and Plates
- Valve body upgrades improve fluid flow and shifting smoothness.
- For the 68RFE, consider the 68RFE Bonded Valve Body Plate 2007-10 or 2011-ON, each priced at $130.00 USD.
- Another option is the 68RFE Billet Channel Plate (Late Model) 2019 – Current for $450.00 USD or the 2007-2018 version for $430.00 USD.
Clutch Packs and Overdrive Components
- Reinforce your transmission with the 68RFE Smart-Tech Overdrive Clutch Housing Kit ($820.00 USD) or the 68RFE Overdrive Hub Assembly ($995.00 USD), which enhance durability for heavy-duty applications.
Input Shafts
- Input shafts are critical for handling torque and preventing failure.
- Options include the 68RFE Maraging Input Shaft for $725.00 USD and the 68RFE 300M Input Shaft for $595.00 USD, both designed to withstand extreme conditions.
Rebuild Kits
- Comprehensive rebuild kits restore your transmission’s functionality and longevity.
- Options include:
- 68RFE 2007-ON Transmission Rebuild Kit Less O.D. Plates for $495.00 USD.
- 68RFE 2007-ON Transmission Rebuild Kit for $750.00 USD.
- 68RFE 2007-ON Transmission Rebuild Kit w/Raybestos TORQ KITS for $895.00 USD.
Common Upgrades and Solutions
- Shifting Enhancements
- The 45RFE 5-45RFE TRANSGO Reprogramming Kit ($135.00 USD) improves shift quality and reduces transmission wear.
- Durability Improvements
- Upgrading to a 68RFE Low Reverse Sprag Update ($450.00 USD) can address common failure points and extend the life of your transmission.
- Technical Support
- For guidance, technical manuals such as the 45RFE 5-45FRE Tech Manual and 68RFE Tech Manual are available for $39.00 USD each.
Performance Enhancements for Heavy-Duty Applications
- Reinforced Components
- Products like the 68RFE Overdrive Hub Assembly ($995.00 USD) and 68RFE Smart-Tech Overdrive Clutch Housing Kit ($820.00 USD) are engineered for high-performance tasks.
- Cooling Solutions
- Pair upgrades with improved cooling systems to reduce overheating during towing or heavy use.
- Billet Parts
- The 68RFE Billet Channel Plate ($450.00 USD for late models) and other billet options provide extreme durability under high torque loads.