2012-2018
66RFE Transmission Performance Upgrades
RedLine builds 66RFE transmissions specifically for Dodge RAM gas HEMI trucks. These performance builds are tailored to your budget and application, with options that cover everything from smooth daily driving to high-horsepower performance setups. Our upgraded 66RFE transmissions take on the torque demands of RAM 2500 and 3500 diesel engines, correct factory weak points like overdrive clutch failure, and deliver the strength, durability, and performance your truck deserves
68RFE
450
"THE 450"
66RFE Daily Driver / Moderate Towing
This RedLine 66RFE build strikes the balance between strength, reliability, and everyday drivability. Designed for truck owners who need dependable performance for daily use and moderate towing, it’s built with premium upgrades that correct factory weaknesses and extend transmission life. A perfect upgrade in liue of a stock rebuild.
Rated at up to 450HP
Build Cost: $5,650
66RFE 450 HP Billet Upgrades
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HP Billet Cover Torque Converter
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RedLine Transmissions Custom Built High-Pressure Valvebody
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RedLine Spec Clutches and Steels with Additional Clutches in Overdrive
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High Pressure Precision Machined Front Pump
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All New Bearings
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Gaskets and Seals
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Blueprint Hard Parts Inspection
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Precision Assembly
66RFE 450 HP Features
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TIG Welded Output Shaft Planetary Pins
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HD Roller Sprag
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4C Snap Ring Retainer Upgrade
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New Bonded Pistons
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New MOPAR White Top Solenoid pack
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New MOPAR Filters
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New MOPAR Line Pressure Sensor and Speed
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Deep Aluminum Transmission Pan
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Bead Blasted Transmission Case painted in High-Quality Enamel Paint
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Craftsmanship Warranty: 12 Months/Unlimited Mileage*
550
"THE 550"
66RFE Towing & Performance
This build delivers reliable strength for both work and play. As one of our most popular options, it produces firmer, more confident shifts than our 450 build and is rated for up to 550 horsepower, striking the perfect balance of durability and performance. The best transmission option for those looking for more than just stock.
Rated at up to 550HP
Build Cost: $6,650
66RFE 550 HP Billet Upgrades
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HP Billet Cover Torque Converter
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Billet Overdrive Drum (Adds 40% more clutch material to the drum)
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RedLine Transmissions Custom Built High-Pressure Valvebody
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RedLine Spec Clutches and Steels with Additional Clutches in Overdrive
-
High Pressure Precision Machined Front Pump
-
All New Bearings
-
Gaskets and Seals
-
Blueprint Hard Parts Inspection
-
Precision Assembly
66RFE 550 HP Features
-
TIG Welded Output Shaft Planetary Pins
-
HD Roller Sprag
-
4C Snap Ring Retainer Upgrade
-
New Bonded Pistons
-
New MOPAR White Top Solenoid pack
-
New MOPAR Filters
-
New MOPAR Line Pressure Sensor and Speed
-
Deep Aluminum Transmission Pan
-
Craftsmanship Warranty: 18 Months/Unlimited Mileage*
Transmissions
Services & Parts