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Blind head bolt holes don’t go through to water jacket
all within fingertips reach
Reduces the fuel flow through the fuel return system due to an age-weakened spring
We also take a step further and upgrade the factory plastic threaded adapter to a steel adapter
The kit is complete with a die-cast support bracket
2011 - 2016 Ford EcoBoost Passenger Side Exhaust Manifold (1043004) 2023 - 2024 GM 3.0L Exhaust Systems Blind head bolt holes don’tThe 2011 2016 Ford 3. 5L has an inherent design flaw where not all of the OE stud locations are utilized by the OE manufacturer which leads to warped exhaust manifolds, broken exhaust studs and blown manifold gaskets. The cylinder head on Fords 3. 5L Gas Ecoboost has threaded holes for 11 exhaust studs to be used, however the OE manifold only utilizes 8 of those stud locations. BD has designed a manifold that not only utilizes all 11 stud locations,