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Service bulletin MAS002324

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10181032
Published by NHTSA2020-10-13
Manufacturer's numberMAS002324
Manufacturer's date2020-09-28
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT

NHTSA's summary

Technical Bulletin - Engine coolant leaks from the cabin heater water delivery hose or the cabin heater water return hose.

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, Equipment and accessories

Vehicles listed
MASERATI GHIBLI2018, 2019, 2020
MASERATI GRANTURISMO2018, 2019, 2020
MASERATI LEVANTE2018, 2019, 2020
MASERATI QUATTROPORTE2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
MAS005184 MTB 26-102026-07-01. Other. 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 26-102026-07-01. Other. 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 26-102026-06-18. Other. 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 26-062026-05-22. 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 26-052026-04-30. Other. Maserati Coolant fluid Color Change from pink to purple.
MAS004864 MTB 25-332025-10-02. 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 25-192025-07-18. Other. This diagnostic sheet is intended to assist technicians in identifying and differentiating engine oil leaks and sweating.
MAS004745 MTB 25-212025-06-17. Other. Some vehicles may experience oil leakage from a threaded insert that may be causing a leak in the engine oil pan. This bulletin provides the repair steps to replace the insert and avoid replacing the entire oil pan. MODELS AFFECTED: - Quattroporte (M156) - Ghibli (M157) - Levante (M161) *All with V6 engines only*
MAS004438_A MTB 25-162025-06-17. 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”
MAS004703 MTB 25-152025-05-16. Other. This Technical bulletin serves as a guide and provides additional diagnostic info to update the engine oil level displayed on the ICS (Integrated Center Stack) for Grecale Hybrid Vehicles and GranTurismo, GranCabrio, and Grecale Trofeo versions