BD Diesel 18-21 Ford Expedition 3.5L Ecoboost 4WD Roadmaster 10R80 Transmission & Converter Package

BD Diesel has been building robust drivetrain components for decades, and this Roadmaster 10R80 Transmission & Converter Package for your 2018-2021 Ford Expedition 3.5L Ecoboost 4WD is one of their staples. If you're looking to improve the durability and shift performance of your transmission, especially if you've got a stock or mildly modified vehicle, this package is designed to handle more and last longer.

This transmission upgrade tackles known issues with the factory 10R80. For instance, it fixes the common CDF Drum leak by adding a retaining feature that keeps the internal bushing from moving and blocking fluid passages. You'll also notice sharper shifts thanks to an anodized reaction shell that prevents clutch tooth wear. The included valve body is a new OEM unit, but BD Diesel modifies it to better retain the solenoids and increases line pressure by about 30%. This means the clutch packs can hold more power, which is crucial for a more responsive and reliable drivetrain.

Included in this comprehensive package is BD Diesel's ProForce 10R80 Torque Converter and a high-capacity Deep Sump Pan. The deep sump adds an extra two quarts of fluid, which is key for keeping the transmission cooler during demanding use. Cooler fluid means the clutches and steels last longer. The ProForce converter uses new friction material for smooth engagement. This setup is compatible with Park-By-Wire shifters and comes with new OEM clutches and steels for a solid foundation.