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Home >> Ford >> 2015 >> Transit-350 HD Base, Van Cargo Extended >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - Description & Operation (Diesel)) >> Engine Control Components >> Fuel Injectors >> Hydraulic Coupler

Hydraulic Coupler

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The hydraulic coupler transfers the longitudinal movement from the piezo actuator to the fuel injector control valve. It also acts as a seal preventing fuel from entering the piezo actuator device.