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August 16, 2023 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-037-23a for 2019-2023 Mazda MAZDA3, 2018-2023 Mazda CX-5 and 2018-2021 Mazda MAZDA6 and others.

Bulletin number
SA-037-23a
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. Dealers can now utilize the Limited Parts Ordering (LPO) page on eMDCS to order the repair parts for 2.5L (with cylinder deactivation) and 2.5L turbo cylinder head repairs. Hotline and MASH authorization is not required to order parts for performing this repair. If there are any questions on part ordering or part status, contact the DAG group for assistance.

Owners of these vehicles have filed 598 complaints in the engine category.

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