Motorad
High Flow

Motorad 2323-180 Engine Coolant Thermostat

Brand Motorad 2323-180
Sealing Flange Outside Diameter 2.05
Gasket Or Seal Included No
Jiggle Pin Weep Hole Yes
Flange Thickness 0.05 in
Installation Tool Included No
Temperature 180 deg. f
Temperature (Degree) 180
Product line High Flow
Fits Kia and Mazda · 22 vehicles

OE supplier quality. Built with OEM materials and manufacturing standards.

Rapid temperature response. Copper case and wax compound react quickly to coolant changes.

Air relief valve. Includes an offset design and OEM-style seals where applicable.

Cross-references Bosch 16168, Four Seasons 63238 and Motorad 2323-180 for the same application. See all 6.

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Motorad 2323-180 High Flow Thermostat

The Motorad 2323-180 is a 180 degree F engine coolant thermostat built for OE-style cooling performance in demanding applications. It uses OEM-quality materials and manufacturing processes, with a copper case and wax compound for quick reaction to coolant temperature changes.

Motorad High Flow thermostats are engineered for steady coolant control and consistent operation in vehicles that need reliable temperature regulation. This 2323-180 unit includes an offset design, an air relief valve, and OEM-style seals where applicable.

  • 180 degree F engine coolant thermostat
  • High Flow design for demanding cooling systems
  • Copper case and wax compound for rapid temperature response
  • Offset design for proper OE-style fitment
  • Air relief valve included
  • Jiggle pin weep hole included
  • Sealing flange outside diameter: 2.05 in
  • Flange thickness: 0.05 in
  • Gasket or seal included: No
  • Installation tool included: No

Detailed Application Coverage

Fits 2001-2003 Kia Rio, N/A. Fits 1994-2000 Kia Sephia, N/A. Fits 1990-1993 Mazda B2600, N/A. Fits 1986-1989 Mazda 626, N/A. Fits 1988 Mazda MX-6, N/A. This part number, Motorad 2323-180, also cross-references Bosch 16168 for the same application.

What This Thermostat Helps Address

  • Engine running too cool or taking too long to reach operating temperature
  • Temperature swings caused by a worn thermostat
  • Coolant flow control issues in the engine cooling system
  • Overheating concerns related to thermostat sticking or delayed opening
  • OE replacement needs for Kia Rio, Kia Sephia, Mazda B2600, Mazda 626, and Mazda MX-6 applications

Installation Notes and Tips

Verify the 180 degree F temperature rating and sealing flange dimensions before installation. Because no gasket or seal is included, reuse only if serviceable or source the correct seal separately. Clean the housing mating surfaces thoroughly and confirm the air relief valve and jiggle pin orientation match the original setup.

Quality Assurance

Manufactured to OEM specifications by an OE supplier using OEM-quality materials and safety standards. The Motorad 2323-180 is built to meet the demands of automotive cooling systems while maintaining OE-style operation.

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2003KiaRio1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2002KiaRio1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2001KiaRio1.5LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
2000KiaSephia1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1999KiaSephia1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1998KiaSephia1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1997KiaSephia1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1997KiaSephia1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1996KiaSephia1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1996KiaSephia1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1995KiaSephia1.8LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1995KiaSephia1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1994KiaSephia1.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1993MazdaB26002.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1992MazdaB26002.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1991MazdaB26002.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1990MazdaB26002.6LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1989Mazda6262.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1988Mazda6262.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1988MazdaMX-62.2LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1987Mazda6262.0LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
1986Mazda6262.0LL4N/ACompatible with original equipment 180°F engine coolant thermostat.; High Flow
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 16168Four Seasons — 63238Motorad — 2323-18092323180NIP16168