Diamond T Torque Converter for Ram (2012-18) 5.7L/6.4L 2500/3500 66RFE

The Diamond T Torque Converter for Ram (2012-18) 5.7L/6.4L 2500/3500 66RFE – DS1266 is a billet cover, heavy-duty upgrade built specifically for gas HEMI trucks that work hard and tow often. The 66RFE is known in the industry for heat and durability challenges; this converter’s Internal upgrades and billet cover design helps put more usable torque to the ground while controlling slip and temperature, giving the transmission a much better chance at long life under load.

Inside, an upgraded lockup clutch and carefully engineered internals provide stronger holding power and more consistent lockup than a stock-style unit, making it ideal for towing, hauling, or mild tuning. Each DS1266 converter is precision balanced to minimize vibration and stress on the 66RFE and driveline, delivering smoother operation and improved reliability for Ram 2500/3500 owners who depend on their trucks every day.

DS1266 installs as a direct-fit replacement when matched to the correct 66RFE 5.7L/6.4L application—no custom fabrication or guesswork required. Backed by a lifetime warranty and proudly American-branded by Diamond T, it offers the strength, control, and confidence serious Ram owners expect—American Made, Because It Matters.

Technical Specs & ID Codes:
Diameter: 12-1/4"
Spline: 29
Pilot: 1.810"
Hub: Milled Flats
Mounting: 4-bolt, 10" bolt circle, M10 x 1.5 threads
Ink Code: Green Swatch
Metal Code: 659AA, 659AB
Paint Code: Light Blue