Thermostat – code: MC8M0090819 – Mercury

Mercury thermostat MC8M0090819: replacement for outboard engines

The Mercury thermostat with code MC8M0090819 is a replacement dedicated to the maintenance of the cooling circuit of outboard engines. In nautical contexts, the thermostat is a key component for managing operating temperature: proper regulation helps keep the engine within the operating conditions specified by the manufacturer and supports smooth operation during use.

Spare part features and details

Product identification

• Type: Outboard motor thermostat
• Brand / reference: Mercury
• Product code: MC8M0090819
• Supplier code: MC8M0090819

Compatibility (as per available data)

The thermostat is suitable for applications on Mercury outboard engines in the following families/variants listed:

• F150 EFI
• F80-100-115 EFI (1.7L) and (2.1L)
• F115 ProXs

Note: compatibility may depend on year, serial number, and engine configuration. For a correct purchase, it is advisable to verify the code MC8M0090819 on the Mercury spare parts catalog or compare it with the removed component.

Role of the thermostat in the cooling circuit

The thermostat works as a flow regulation element in the cooling circuit, helping to manage the engine temperature during different phases of use (starting, warming up, running). In routine and extraordinary maintenance, replacing the thermostat can be considered when working on the cooling circuit or when performing periodic checks of components subject to wear and deposits.

Typical applications in the nautical field

This spare part is designed for maintenance and restoration contexts on Mercury outboard engines, especially when you want to keep the cooling system efficient and consistent with the manufacturer's specifications.

When replacement can be useful

• Scheduled maintenance: periodic interventions on the cooling circuit, with checks on the main components.
• Workshop interventions: overhaul or restoration operations where it is preferable to replace critical components to reduce downtime and returns for service.
• Check after storage: inspections before the season, especially if the boat has been stationary for a long time.
• Restoration after anomalies: when, following diagnosis, it is found necessary to intervene on the thermostat or related cooling elements.

Recommended engines (summary)

The thermostat MC8M0090819 listed as a spare part for:

• Mercury F150 EFI
• Mercury F80-100-115 EFI (1.7L) and (2.1L)
• Mercury F115 ProXs

Benefits for maintainers and users

Choosing a thermostat identified by code is a practical and professional approach because it reduces the risk of errors during ordering and facilitates spare parts warehouse management.

Why buy by code

• Quick identification: the code MC8M0090819 allows immediate comparison with exploded views and spare parts lists.
• Simpler spare parts management: useful for workshops and maintainers working on multiple engines who need traceability.
• Consistency with the replaced component: the presence of the reference ex892864t06 helps in case of updates or code replacements.
• Reduction of uncertainties: when the engine model is known, the code is often the most reliable information for ordering.

“Service” approach in the nautical field

In the nautical sector, cooling maintenance is often part of a broader check that may include visual inspection, cleaning, and verification of connected components. Including the thermostat among the spare parts checked during interventions helps maintain an orderly setup consistent with good workshop practices.

Usage and operational notes

The thermostat is a component installed in the engine's cooling circuit. Installation and replacement require care to ensure correct assembly and to avoid leaks or malfunctions due to incorrect positioning or worn auxiliary components.

Tips for identification before ordering

• Check the code: check that the requested spare corresponds to MC8M0090819.
• Check for any previous codes: if present on the removed component ex892864t06, it can be a useful reference.
• Compare model and version: for engines of the same family, variants may exist; if available, also use serial/year for confirmation.

Installation notes (generic)

• Professional intervention: in case of doubt, it is advisable to entrust the replacement to qualified personnel.
• Circuit check: during the intervention, it may be useful to check the general condition of the cooling circuit and related components.
• Functional test: after replacement, perform a functional check according to the maintenance procedures provided for the engine.

For any additional verification, you can refer to the code MC8M0090819 and communicate it when requesting: it is the most useful information for a quick response.

FAQ – Frequently Asked Questions

What is the code of this Mercury thermostat?

The product code listed is MC8M0090819. The datasheet also indicates the previous reference ex892864t06.

For which engines is the MC8M0090819 thermostat suitable?

According to available data, it is suitable for Mercury F150 EFI, F80-100-115 EFI (1.7L and 2.1L), and F115 ProXs. Compatibility may vary depending on version and serial number.

Is the code ex892864t06 equivalent to MC8M0090819?

In this datasheet, ex892864t06 is listed as the previous (ex) reference associated with the MC8M0090819 thermostat. For definitive confirmation, it is advisable to check the Mercury spare parts catalog.

How do I verify if the thermostat is the right one for my outboard?

The most reliable method is to check the spare part code required by the Mercury catalog for your model/serial number or compare the code of the removed component with MC8M0090819 (or the reference ex892864t06).

Is it a suitable replacement for regular maintenance?

Yes, the thermostat is a component of the cooling circuit and can be part of maintenance and system checks, according to the procedures provided for the engine and usage conditions.