# Other MAS004438 MTB 25\-03

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: Other
- NHTSA id: 11013422
- Published by NHTSA: 2025\-02\-03
- Manufacturer's number: MAS004438 MTB 25\-03
- Manufacturer's date: 2025\-01\-28
- NHTSA component: ENGINE; UNKNOWN OR OTHER

## NHTSA's summary

This Technical information bulletin serves as a diagnostic guide for managing engine oil leaks and instructing related repairs.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11013422-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11013422-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2002 to 2004 MASERATI COUPE
- 2005 MASERATI COUPE
- 2006 MASERATI COUPE
- 2024 MASERATI FOLGORE
- 2014 to 2024 MASERATI GHIBLI
- 2024 to 2025 MASERATI GRANCABRIO
- 2025 MASERATI GRANCABRIO FOLGORE
- 2005 to 2006 MASERATI GRANSPORT
- 2008 to 2025 MASERATI GRANTURISMO
- 2025 MASERATI GRANTURISMO FOLGORE
- 2022 MASERATI GRECALE
- 2023 to 2024 MASERATI GRECALE
- 2025 MASERATI GRECALE FOLGORE
- 2014 to 2016 MASERATI LEVANTE
- 2017 to 2024 MASERATI LEVANTE
- 2017 MASERATI LEVANTE S
- 2021 MASERATI MC20
- 2022 to 2024 MASERATI MC20
- 2023 to 2024 MASERATI MC20 CIELO
- 2024 MASERATI NUOVA GRANCABRIO
- 2024 MASERATI NUOVA GRANTURISMO
- 2004 MASERATI QUATTROPORTE
- 2005 to 2024 MASERATI QUATTROPORTE
- 2014 MASERATI QUATTROPORTE GTS
- 2005 MASERATI QUATTROPORTES
- 2002 MASERATI SEDAN
- 2002 to 2004 MASERATI SPYDER
- 2005 MASERATI SPYDER

## Recalls for the same vehicles and component

- [18V173000](/recalls/nhtsa/18V173000.md), 2018-03-14: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE
- [17V161000](/recalls/nhtsa/17V161000.md), 2017-03-13: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE
- [2016647](/recalls/tc/2016647.md), 2016-12-21: Engine

## Other bulletins for the same vehicles and component

- [MAS005186 MCL 26\-16](/bulletins/11035467.md), 2026-08-03, Other: ENGINE; UNKNOWN OR 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.
- [MAS005184 MTB 26\-10](/bulletins/11034170.md), 2026-07-01, Other: UNKNOWN OR OTHER; ENGINE. Quattroporte / Ghibli / Levante V6 – Thermostat Gasket Availability This bulletin provides updated information and further clarification regarding the replaceability of the thermostat gasket on V6 engines installed on Quattroporte, Ghibli and Levante.
- [MAS005184 MTB 26\-10](/bulletins/11034165.md), 2026-07-01, Other: UNKNOWN OR OTHER; ENGINE. Quattroporte / Ghibli / Levante V6 – Thermostat Gasket Availability This bulletin provides updated information and further clarification regarding the replaceability of the thermostat gasket on V6 engines installed on Quattroporte, Ghibli and Levante.
- [MAS005184 MTB 26\-10](/bulletins/11033983.md), 2026-06-18, Other: UNKNOWN OR OTHER; ENGINE. This bulletin provides updated information and further clarification regarding the replaceability of the thermostat gasket on V6 engines installed on Quattroporte, Ghibli and Levante.
- [MAS005111\_A MTB 26\-06](/bulletins/11032896.md), 2026-05-22, Other: UNKNOWN OR OTHER; ENGINE. 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](/bulletins/11031741.md), 2026-04-30, Other: UNKNOWN OR OTHER; ENGINE. Maserati Coolant fluid Color Change from pink to purple.
- [MAS004952 DS 25\-36](/bulletins/11025844.md), 2025-12-01, Other: UNKNOWN OR OTHER; ENGINE. This Diagnostic Sheet serves as a guide and provides additional diagnostic info for possible issues potentially affecting the oil pump/sensor.
- [MAS004939 MTB 25\-43](/bulletins/11025839.md), 2025-12-01, Other: ENGINE; UNKNOWN OR OTHER. This bulletin provides instructions for checking engine radiator leaks. The purpose of this procedure is to confirm leaks with clear evidence, prevent unnecessary component replacement, and ensure accurate diagnosis.
- [MAS004829 MTB 25\-37](/bulletins/11024675.md), 2025-10-31, Other: UNKNOWN OR OTHER; ENGINE. This bulletin explains how to identify and handle momentary coolant leaks from the water pump’s weeper chamber on Maserati MHEV engines. It helps technicians understand what is normal during initial operation, what needs attention, and how to decide if the pump should be replaced.
- [MAS004864 MTB 25\-33](/bulletins/11023566.md), 2025-10-02, Other: UNKNOWN OR OTHER; ENGINE. 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 \(All MY\)

JSON: [/v1/bulletins/11013422](/v1/bulletins/11013422)

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