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Power through the toughest jobs with the TrackMonster 66RFE transmission, a 6-speed automatic built to dominate heavy-duty trucks and high-torque diesel engines. Designed for strength, durability, and smooth performance, the 66RFE is your ultimate partner for towing, hauling, and everyday driving.
Perfect for beasts like the Ram 2500 and 3500, this transmission strikes the ideal balance between raw power and fuel efficiency. Its wide gear ratios deliver powerful acceleration when you need it and improved fuel economy on the open road. Reinforced internal components handle extreme loads with ease, while advanced electronic controls ensure seamless, precise shifting in any condition. With the 66RFE, your truck is ready to take on whatever you throw at it.
Note
In-stock transmissions usually ship the next business day.
Custom builds or out-of-stock units typically ship within 2–4 weeks.
Need it sooner? Call us — we can often make special arrangements.
We offer the most comprehensive coverage in the industry:
Extend warranties are optional add-ons available during checkout.
No — we offer a $299 Flat-Rate One-Way Shipping to any address, commercial or residential.
If you find a better rate, you're welcome to arrange your own shipping.