Service bulletin MAS003664
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10242598 |
| Published by NHTSA | 2023-09-25 |
| Manufacturer's number | MAS003664 |
| Manufacturer's date | 2023-08-01 |
| NHTSA component | ENGINE AND ENGINE COOLING |
NHTSA's summary
Rapid Update 649 to inspect a possible leak of the coolant located in the underbody of the vehicle. This is an extension to service campaign 514.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
| MASERATI MC20 | 2022, 2023 |
|---|---|
| MASERATI MC20 CIELO | 2023 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| MAS005186 MCL 26-16 | 2026-08-03. Other. We are informing you that tool p/n 900100024 has been updated with an additional component designed to improve the oil seal installation process on V6 Nettuno engines. This added component helps ensure consistent, accurate positioning of the oil seal in its seat by compensating for dimensional gaps and seal tolerances. It also improves process reliability by helping maintain proper installation conditions, even when tool usage is not optimal. |
|---|---|
| MAS005111_A MTB 26-06 | 2026-05-22. Other. Maserati Coolant Fluid Color Change. The previous pink coolant and the new purple coolant are fully compatible and may be mixed without affecting coolant quality, performance, or system behavior. |
| MAS005111 MTB 26-05 | 2026-04-30. Other. Maserati Coolant fluid Color Change from pink to purple. |
| MAS004864 MTB 25-33 | 2025-10-02. Other. This bulletin introduces the serviceability of the oil pump bearing on the V6 Nettuno engine. The bearing can now be replaced individually, eliminating the need for complete engine or long block replacement when noise is traced to this component. Models Involved: • Grecale V6 (All MY) • GranTurismo V6 / GranCabrio V6 (All MY) • MC20 / MC20 Cielo / MC20 Pura (All MY) |
| MAS004789 DS 25-19 | 2025-07-18. Other. This diagnostic sheet is intended to assist technicians in identifying and differentiating engine oil leaks and sweating. |
| MAS004438_A MTB 25-16 | 2025-06-17. Service bulletin. This Technical bulletin serves as a diagnostic guide for managing oil leaks and instructing related repairs. This Bulletin requires a BOL to be opened as “Support Request” |
| MAS004438_A MTB 25-16 | 2025-05-16. Other. his Technical bulletin serves as a diagnostic guide for managing oil leaks and instructing related repairs. This Bulletin requires a BOL to be opened as “Support Request”. |
| MAS004460 MTB 25-09 | 2025-03-19. Other. This Technical bulletin serves as a guide and provides additional diagnostic info regarding MC20 engine noise characteristics during tip-in/tip-out maneuvers with the accelerator pedal. |
| MAS004438 MTB 25-03 | 2025-02-03. Other. This Technical information bulletin serves as a diagnostic guide for managing engine oil leaks and instructing related repairs. |
| MAS004490 MTB 24-30 | 2024-12-19. Other. his Technical bulletin serves as a guideline and outlines requirements when considering a possible engine replacement on Maserati vehicles. Please refer to Bulletin “MAS004175 PNP 24-01 Light Engine - Long Block Repairs Under Warranty” for further information. |