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November 28, 2024 Service bulletin

Some vehicles may have coolant leaks at the cylinder head around the exhaust manifold (as shown below)

Mazda technical service bulletin 01-010-24 for 2019-2020 Mazda CX-5, 2018-2020 Mazda MAZDA6 and 2016-2020 Mazda CX-9.

Bulletin number
01-010-24
Component
Engine
Summary
Some vehicles may have coolant leaks at the cylinder head around the exhaust manifold (as shown below). There may be cracks at the stud bolt hole (1) or at the outside of the exhaust manifold flange (2) on the cylinder head.

Owners of these vehicles have filed 411 complaints in the engine category.

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