66RFE Transmission Price range: $1,500.00 through $3,000.00Select options
66RFE Transmission
The 66RFE transmission is a 6-speed automatic gearbox engineered for heavy-duty Ram trucks from 2007 to 2022. Designed to handle high torque from 5.7L HEMI and 6.4L V8 engines, it offers enhanced shift control, durability, and towing performance. Whether youβre restoring or upgrading your Dodge or Ram pickup, this tested OEM 66RFE transmission ensures factory-grade reliability and smooth performance. Each unit is inspected, quality-tested, and ready for installation, backed by a standard warranty for peace of mind.
35 in stock
$1,500.00 – $3,000.00Price range: $1,500.00 through $3,000.00
The prices are exclusive of taxes and shipping. The price may vary depending upon the miles and year of manufacturing.
SKU: CHRY-RF68
Category: Used Transmission
Tags: 6-Speed 66RFE Transmission, 66RFE Transmission, Dodge Ram 66RFE Transmission, Ram 2500 66RFE Transmission, Used 66RFE Transmission
Brand: Chrysler
Additional Information
| Brand | Chrysler |
|---|---|
| Conditions | Remanufactured, Used |
| Miles | 70000-130000 |
| Year Compatibility | 2007β2025 |
| Verified | Tried & Tested |
| Warranty | Up to 3 Months |
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- High-Quality Product
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Specifications
The 66RFE transmission is a 6-speed electronically controlled automatic transmission introduced by Chrysler in 2012 for gas-powered Ram 2500 and 3500 trucks equipped with the 5.7L and 6.4L HEMI engines. It combines the aluminum case of the 545RFE with internal components and gear sets derived from the heavier-duty 68RFE, creating a hybrid design intended to handle increased torque demands. Weighing approximately 295β345 lbs and using ATF+4 fluid, the 66RFE features gear ratios of 3.231:1 (1st), 1.837:1 (2nd), 1.410:1 (3rd), 1.000:1 (4th), 0.816:1 (5th), 0.625:1 (6th), and 4.444:1 (reverse). Its design includes 68RFE planetary gears, a 2C clutch, a low/reverse clutch, and a double overdrive configuration across 4th, 5th, and 6th gears.Β
The shift strategy applies various clutch combinations for each gear, such as low/reverse and underdrive in 1st, and overdrive with the 2nd clutch in 6th. Common issues include overdrive clutch failure, 4C binding, and valve body cross-leaks, leading many owners to upgrade with a billet steel-sleeved SSV bore, increased line pressure (150β250+ psi), and a deeper sump pan for added fluid capacity and durability.Β Β
Compatible Models
Ram 2500 (2012β2018 β 5.7L & 6.4L HEMI)
From 2012 to 2018, the Ram 2500 equipped with the 5.7L or 6.4L HEMI used the 66RFE 6-speed automatic transmission. Designed to handle the higher torque output of these gas engines, the 66RFE provided improved durability over earlier RFE units while maintaining smooth electronic shift control. It was commonly paired with both 2WD and 4WD configurations for heavy-duty work and towing applications.Β
Ram 3500 (2012β2018 β 5.7L & 6.4L HEMI, including Chassis Cab)
The 2012β2018 Ram 3500 models powered by the 5.7L or 6.4L HEMI, including Chassis Cab variants, were also equipped with the 66RFE transmission. In these heavier-duty applications, the transmission supported increased payload and towing capacities while maintaining reliability for commercial and fleet use. Its reinforced internal components made it suitable for demanding work environments.
Ram 2500 Power Wagon (2012β2018)
The 2012β2018 Ram 2500 Power Wagon, powered by the 6.4L HEMI, utilized the 66RFE transmission to complement its off-road-focused design. Built for trail capability and heavy-duty performance, the transmission provided low-end torque management and durability suited for rugged terrain, while still delivering smooth operation for everyday driving.
Frequently Asked Questions
What vehicles use the 66RFE transmission?
Itβs commonly found in Ram 2500 and 3500 trucks (2007β2022) with 5.7L or 6.4L HEMI V8 engines.
Is the 66RFE transmission used or rebuilt?
Units are available in both tested used and professionally rebuilt conditions, ensuring reliable OEM performance.
How much torque can the 66RFE handle?
The 66RFE is rated to handle up to 550 lb-ft of torque, ideal for towing and heavy-duty use.
Does the 66RFE transmission come with a warranty?
Yes, every unit includes a standard warranty that covers workmanship and major components.
Is the 66RFE compatible with other Dodge models?
Primarily designed for Ram HD trucks, though compatibility may extend to select Dodge chassis cab configurations with the HEMI Engine.
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