
Upgrade your 2020–2024 Ford Transit 3.5L EcoBoost 4WD or naturally aspirated V6 with the BD Diesel 1064684SS Roadmaster Transmission & Converter Package, a high-performance replacement designed to eliminate common factory 10R80 transmission failures.
This package includes a modified valve body that increases line pressure by ~30% for stronger clutch engagement, a retaining-enhanced CDF drum to prevent fluid blockage issues, and an anodized reaction shell that fixes tooth wear found in OEM units. Paired with a ProForce torque converter featuring upgraded friction material, this dyno-tested combo delivers smoother shifts, higher reliability, and greater longevity than stock.
💰 $2,000 Refundable Core Charge Required
⏱️ Estimated Install Time: 11 Hours 30 Minutes
✔️ Fits both EcoBoost & NA 3.5L engines
BD-modified valve body boosts line pressure by ~30%
Revised CDF drum with retention design fixes OEM failure
Anodized reaction shell eliminates common clutch tooth wear
Smooth, firm shifts using new OEM clutches and steels
Fully dyno-tested for quality and consistency
Enhanced friction material for towing, delivery, and everyday use
Precision remanufactured for smoother, more responsive shifts
Ideal for vans under frequent load or fleet operation
2020–2024 Ford Transit 3.5L EcoBoost V6 4WD (10R80 Transmission)
2020–2024 Ford Transit 3.5L Naturally Aspirated V6 4WD (10R80 Transmission)
✔️ Replaces OEM #s:
• 4WD: LK4Z-7000-HA, LK4Z-7000-EA
• 2WD: LK4Z-7000-C, LK4Z-7000-DA
BD Roadmaster 10R80 Transmission Assembly
BD ProForce Torque Converter (Upgraded Friction Material)
Modified Valve Body (30% Pressure Increase)
Revised CDF Drum
Anodized Reaction Shell
New OEM Clutches & Steels
Warranty: 24-Month / 100,000-Mile Parts | 12-Month / 24,000-Mile Labor
BD Diesel’s Roadmaster Series solves the known weak points of the 10R80 transmission platform with long-term, fleet-tested upgrades. From fixing fluid bypass issues with the CDF drum to increasing pressure for improved clutch holding, this transmission package is built for hard use—whether you’re running a delivery van, fleet vehicle, or work truck. Dyno-tested and street-ready, BD keeps your business moving.