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November 19, 2021 Service bulletin

Some 2015-2019 Transit vehicles equipped with a 3.7L engine and block heater may exhibit a repeat coolant...

Ford technical service bulletin TSB 21-2408 for 2015-2019 Ford Transit.

Bulletin number
TSB 21-2408
Component
Engine and engine cooling
Summary
Some 2015-2019 Transit vehicles equipped with a 3.7L engine and block heater may exhibit a repeat coolant leak from a deteriorated O-ring and/or intake manifold thermostat housing. This may be due to the block heater in the thermostat housing. To correct the condition, install a block heater service kit in the engine block.

Owners of these vehicles have filed 103 complaints in the engine category.

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