Motorad 662-180 Engine Coolant Thermostat Housing Assembly

Integrated thermostat housing for OE-style cooling control

Motorad 662-180 is an engine coolant thermostat housing assembly built for vehicles that use an integrated thermostat and housing design. It features a 180 Deg. F opening temperature, a bleeder hole, and a jiggle pin to help manage coolant flow and air evacuation in the cooling system.

Compatible With Nissan Altima, Maxima, Murano, Pathfinder, Quest, and Infiniti QX60 and JX35 applications that call for the OE-specified 180F integrated housing thermostat. Motorad 662-180 is also a direct reference for common cross-number applications such as Bosch 15238 and Dorman OE Solutions 902-5902.

Key features

• Integrated housing thermostat assembly with thermostat, housing, and gasket/seal included where applicable
• 180 Deg. F start-to-open temperature for OE-style thermal control
• Bleeder hole and jiggle pin for air relief during coolant service
• 3 bolt holes and 1 outlet port
• Silver housing in aluminum, stainless steel, and copper construction
• Paper gasket/seal material for sealing at the housing interface
• Offset design to match specified cooling system layouts

Detailed description

The Motorad Integrated Housing Thermostat line is built to match OE specifications and manufacturing processes for modern cooling systems that use a combined thermostat and housing assembly. Part number 662-180 uses OEM-quality materials and an OE-supplier manufacturing approach, with a copper case and wax compound for responsive temperature regulation as coolant temperature changes. The 180 Deg. F calibration is specified for a range of Nissan and Infiniti vehicles, including Nissan Altima, Maxima, Murano, Pathfinder, Quest, and Infiniti QX60 and JX35 applications.

This part number, 662-180, is a practical OE-style replacement when the original thermostat housing is cracked, leaking, or no longer regulating coolant temperature correctly. It is also referenced by 662-180 in catalog interchange data for related applications.

What it helps address

• Coolant temperature that stays too low or rises above normal operating range
• Leaks at the thermostat housing or gasket interface
• Air trapped in the cooling system after service
• Delayed engine warm-up caused by a worn thermostat
• Fitment issues when replacing an integrated thermostat and housing assembly

Installation notes and tips

Verify the OE-specified 180F temperature and housing style before installation. Inspect the mating surface, replace any damaged coolant hoses or seals, and follow the vehicle service procedure for bleeding air from the cooling system. The bleeder hole and jiggle pin are included to assist with air relief, but proper refill and bleed steps are still important for stable operation.

Quality assurance

Motorad manufactures this thermostat housing assembly with OEM-quality materials and safety standards as an OE supplier. The design is produced to OE specifications for demanding automotive cooling systems and uses an offset layout with OEM-style sealing features where applicable.