Facet 7.8649 Engine Coolant Thermostat

Overview

Facet 7.8649 is an engine coolant thermostat for select Nissan and INFINITI applications. It is a direct-fit cooling system service part for vehicles that need precise coolant temperature control and stable engine operating conditions.

Compatible With Nissan Armada, TITAN, Pathfinder, NV2500, and NV3500 applications, as well as INFINITI QX56, FX45, FX50, M45, M56, Q45, QX70, and QX80 applications. This part number, 7.8649, is listed across multiple model years for fitment-based search accuracy.

Key Features

• Engine coolant thermostat for cooling system temperature regulation
• Direct-fit replacement for select Nissan and INFINITI vehicles
• Fitment spans multiple model years for broad application coverage
• Facet part number 7.8649 for catalog and service lookup

Detailed Description

Facet 7.8649 is an engine coolant thermostat used in cooling system service on select Nissan and INFINITI platforms. It is listed for applications including Nissan Armada, TITAN, Pathfinder, NV2500, and NV3500, along with INFINITI QX56, FX45, FX50, M45, M56, Q45, QX70, and QX80. When replacing a thermostat, matching the correct application is important for maintaining proper coolant flow and engine temperature control. The part number 7.8649 appears in service catalogs for these vehicles and should be verified against the exact model year and notes before installation.

What It Helps Address

• Engine running too cool or too hot
• Unstable coolant temperature during operation
• Cooling system service on a worn thermostat
• Temperature control issues tied to thermostat wear

Installation Notes

Verify the year, make, model, and notes before ordering or installing. This listing includes applications marked with thermostat notes and one QX80 application noted as up to August 2015, so exact catalog matching matters. Inspect the cooling system condition during service and confirm the replacement thermostat matches the original application and engine requirements.

Quality Assurance

Facet is a recognized aftermarket brand for engine management and thermal control components. Part number 7.8649 is cataloged for specific Nissan and INFINITI fitments to support accurate replacement selection.