Product Description
The ATS 309-944-9392 Stage 4 66RFE Transmission Package is a top-tier performance upgrade designed for 2012-2018 Ram trucks equipped with the 5.7L or 6.4L HEMI engine and 4WD drivetrain. Engineered for extreme durability, high horsepower applications, and heavy towing demands, this Stage 4 package delivers significantly increased torque capacity, improved shift performance, and long-term reliability.
This complete package includes a fully built ATS Stage 4 66RFE automatic transmission, ATS Five Star torque converter, and ATS deep transmission pan. ATS upgrades critical internal components including clutch packs, valve body calibration, and billet internal parts to handle higher power levels while maintaining smooth and consistent shifting.
The included Five Star torque converter enhances torque multiplication, reduces slippage, and improves throttle response. The deep transmission pan increases fluid capacity and cooling efficiency, helping maintain optimal transmission temperatures under load.
This package is ideal for performance builds, heavy towing, and demanding work applications where the factory transmission is prone to failure.
FAQ
What is included in the ATS 309-944-9392 package?
This package includes an ATS Stage 4 built 66RFE transmission, ATS Five Star torque converter, and ATS deep transmission pan.
What makes the Stage 4 transmission different?
Stage 4 transmissions include upgraded clutch packs, billet internal components, and advanced calibration designed for high horsepower and heavy-duty use.
Is this suitable for towing and heavy loads?
Yes. This transmission is built specifically for heavy towing, hauling, and high-performance applications.
What engines does this fit?
It fits 5.7L and 6.4L HEMI-equipped Ram trucks.
Why upgrade the 66RFE transmission?
The factory 66RFE can struggle with higher power levels and heavy loads. ATS upgrades improve durability, shifting performance, and torque capacity.
FITMENT
2012-2018 Ram 2500 5.7L HEMI (4WD)
2012-2018 Ram 2500 6.4L HEMI (4WD)
2012-2018 Ram 3500 5.7L HEMI (4WD)
2012-2018 Ram 3500 6.4L HEMI (4WD)
Equipped with 66RFE Transmission
Specifications for ATS 309-944-9392
| Specification | Details |
|---|---|
| Part Number | 309-944-9392 |
| Product Name | ATS Stage 4 66RFE Transmission Package |
| Transmission Model | 66RFE Automatic |
| Engine Fitment | 5.7L / 6.4L HEMI Gas |
| Vehicle Fitment | 2012-2018 Ram 2500 / 3500 |
| Drive Configuration | 4WD |
| Included Components | Stage 4 Built Transmission, Five Star Torque Converter, Deep Transmission Pan |
| Performance Level | Stage 4 – High Performance / Heavy Duty |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Information | Freight Shipping Required |
| Core Charge | Core Charge Applies |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
