Turbochargers for Ford Flex (2010-2019) 3.5L EcoBoost Left & Right

Direct-Fit Twin Turbocharger Upgrade Set for 2010-2019 Ford Flex (D471)

What it Does: The replacement twin turbocharger set replaces failing factory turbos on the 2010-2019 Ford Flex to restore full manifold boost pressure, recover throttle response, and eliminate underboost diagnostic trouble codes.

The Stock Ford Flex Turbocharger Bearing & Wastegate Wear

The factory Ford D471 platform equipped with the transverse 3.5L EcoBoost (Cyclone) twin-turbocharged V6 places extreme thermal loads on the factory turbochargers. Over prolonged heat cycles, the original journal bearings and internal dynamic seals degrade, leading to oil blow-by past the turbine piston rings, blue exhaust smoke, and fouled intercooler cores. Compounding this, the stock wastegate actuator pivot arms develop excessive mechanical play, causing exhaust bypass leakage, slow boost spool, and frequent P0299 underboost codes that derate towing and acceleration capabilities.

The Engineering Solution

Engineered to exact OEM tolerances, this GT1549SL-style matched pair addresses factory wear points through robust hydrodynamic journal bearings and balanced rotating assemblies capable of handling high shaft speeds without dynamic deflection. Both left- and right-hand units feature integrated oil and water-cooled cast iron turbine housings matched to CNC-machined compressor covers for thermal dissipation. Calibrated internal wastegate actuators ensure strict boost threshold regulation, matching OEM target maps without requiring ECU calibration. Fully compatible with factory oil lines and downpipes, these turbos restore the original volumetric efficiency and transient throttle response.

What's Included

• 1 Right-Hand (RH) Turbocharger
• 1 Left-Hand (LH) Turbocharger
• Installation Gaskets

Technical Specifications

Compatibility

• 2010-2019 Ford Flex Limited 3.5L EcoBoost
• 2011-2012 Ford Flex Titanium 3.5L EcoBoost

Frequently Asked Questions & Fitment Warnings

Does this fit the D471 Flex?

Yes, this is a direct fit for the 2010-2019 Ford Flex equipped with the 3.5L EcoBoost V6 engine. This kit does not fit models equipped with the naturally aspirated 3.5L Duratec V6.

What critical prep work is required before installing these turbochargers?

Flush or replace both oil feed and return lines, clear the intercooler of pooled oil, and pre-prime the center housings with clean engine oil prior to starting.

The Ford Towing & Utility Standard

Engineered to sustain peak boost levels under continuous high-load towing and family hauling demands, this replacement pair maintains factory thermal margins and ensures reliable torque output across the entire RPM band.