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May 6, 2021 Service bulletin

A new cylinder head assembly for service parts has been newly established for SKYACTIV-G 2.5 with cylinder...

Mazda technical service bulletin SA-031-21 for 2019-2020 Mazda MAZDA3, 2018-2020 Mazda CX-5 and 2018-2020 Mazda MAZDA6.

Bulletin number
SA-031-21
Component
Engine and engine cooling
Summary
A new cylinder head assembly for service parts has been newly established for SKYACTIV-G 2.5 with cylinder deactivation when replacement is needed. Valves, valve springs, valve spring seats, and cotters (IN/EX) are included in the new assembly. DUE TO A SUPPLY ISSUE FOR CYLINDER HEADS, GASKET SETS, AND PARTIAL ENGINE, PLEASE CONTACT HOTLINE FOR REPAIR GUIDANCE.

Owners of these vehicles have filed 388 complaints in the engine category.

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