Motorad 320-170 Engine Coolant Thermostat

Engine Cooling Thermostat for OE-Style Temperature Control

The Motorad Standard 320-170 engine coolant thermostat is built for direct replacement in vehicles that require a 170°F opening temperature. It uses OEM-quality materials and OE-supplier manufacturing processes to deliver consistent coolant flow control in demanding cooling systems.

Designed for applications such as the Honda Passport, Isuzu Rodeo, and Isuzu Trooper, this thermostat supports stable operating temperature management with an OE-style copper case and wax compound for quick reaction to coolant temperature changes.

Key Features

• 170°F start-to-open temperature for OE-specified cooling performance
• Standard thermostat design for direct-fit replacement use
• Copper case and wax compound for fast response to coolant temperature changes
• Offset design with air relief valve where applicable
• Jiggle pin weep hole included for air bleeding during service
• OEM-style seals included where applicable
• Motorad Standard part number 320-170

Detailed Description

Motorad 320-170 is an engine coolant thermostat engineered to match OEM specifications and manufacturing processes. The 170°F calibration helps maintain the factory operating range required by many Asian import cooling systems, including 1994-1997 Honda Passport, 1993-1997 Isuzu Rodeo, and 1992-1997 Isuzu Trooper applications. This thermostat is also listed for 1996-1997 Acura SLX and 1998 Isuzu Amigo.

The copper case and wax compound are selected for responsive temperature regulation, while the offset design and air relief valve support proper coolant circulation and air management where the application calls for them. Part number 320-170 is a practical OE-style replacement for drivers servicing a 170°F cooling system specification.

This part cross-references NGK 4177 for the same application.

What It Helps Address

• Engine running cooler or warmer than the specified operating range
• Delayed coolant flow regulation after startup
• Temperature fluctuation caused by a worn thermostat
• Cooling system service on OE-specified 170°F applications
• Replacement needs for Honda Passport, Isuzu Rodeo, and Isuzu Trooper cooling systems

Installation Notes and Tips

Verify the thermostat housing and sealing surfaces are clean before installation. Confirm the application calls for a 170°F thermostat and check that the jiggle pin orientation matches the service procedure for the vehicle. This thermostat does not include a gasket or seal, and no installation tool is included.

For fitment, use the vehicle-specific application listing: Fits 1994-1997 Honda Passport, N/A; Fits 1993-1997 Isuzu Rodeo, N/A; Fits 1992-1997 Isuzu Trooper, N/A; Fits 1996-1997 Acura SLX, N/A; Fits 1998 Isuzu Amigo, N/A.

Quality Assurance

Motorad manufactures this Standard thermostat with OEM-quality materials and safety standards as an OE supplier. The 320-170 is built to OEM specifications for consistent fit and temperature control in demanding automotive cooling systems.