Maserati Engine Coolant Expansion Reservoir Tank 670031651 for Ghibli Levante Quattroporte

Premium Cooling-System Replacement for Maserati

Restore a clean, dependable engine-cooling layout with this direct-fit coolant expansion reservoir assembly, part number 670031651. Designed for Maserati applications including Ghibli, Levante and Quattroporte M156 platforms, the reservoir manages coolant expansion as engine temperature rises and returns coolant to the system as it cools.

Materials & Construction

The tank uses a rigid, heat-resistant molded polymer body engineered for the high-temperature environment of an engine bay. Integrated hose necks, formed mounting points and dual pressure-cap architecture create a compact assembly with a precise OE-style layout. The molded shell construction keeps weight low while maintaining the structural rigidity required around coolant connections and mounting tabs.

What It Does

• Provides controlled space for coolant expansion and contraction.
• Supports stable cooling-system pressure and coolant circulation.
• Helps replace an aged, stained, cracked or leaking reservoir assembly.
• Restores a clean engine-bay appearance with a fresh replacement tank.

Fitment Reference

Reference Part Number: 670031651
Common Applications: Maserati Ghibli, Maserati Levante, Maserati Quattroporte M156.

Match part number 670031651, hose-port positions and mounting layout to the original reservoir before installation.

How to Replace

1. Allow the engine and cooling system to cool completely.
2. Remove surrounding covers required to access the reservoir.
3. Release the coolant hoses and electrical connection if fitted to the original assembly.
4. Remove the reservoir mounting fasteners and lift out the old tank.
5. Install the replacement reservoir in the original mounting points.
6. Reconnect hoses securely, refill with the vehicle-specified coolant and bleed the cooling system according to the vehicle service procedure.
7. Run the engine to operating temperature and inspect every connection for leaks.

Why This Replacement Makes Sense

A coolant expansion tank is a working pressure-management component, not just a container. A fresh reservoir helps maintain the correct coolant volume, supports consistent thermal control and reduces the risk of coolant loss caused by an ageing tank body or connection point.

FAQ

Is this the same reference as 670031651?
Yes. This listing is built around reference part number 670031651.

Which Maserati models use this reservoir?
The 670031651 reference is used across selected Maserati Ghibli, Levante and Quattroporte M156 applications. Match the part number and physical layout to your original tank.

What material is the tank made from?
The reservoir uses a heat-resistant molded polymer body with integrated hose connections and mounting points.

When should the reservoir be replaced?
Replace the tank when the original body is cracked, leaking, heavily discoloured, deformed, or no longer holds coolant pressure correctly.

Does installation require coolant bleeding?
Yes. After replacement, refill with the correct coolant and bleed the cooling system according to the vehicle service procedure.

Is this suitable for DIY installation?
It suits experienced DIY owners with cooling-system service knowledge. Professional installation is recommended when access, bleeding procedure or coolant specification is unfamiliar.