A-Premium Engine Coolant Thermostat 77°C Start-to-Open — Single Unit with Seal, Metal/Rubber Construction

A-Premium Engine Coolant Thermostat with seal is a direct-replacement metal-and-rubber thermostat that opens at 77°C and fits many Honda, Hyundai, Lexus, Toyota, Nissan and other vehicles.

This replacement thermostat from A-Premium is built to restore correct engine temperature control after an OEM unit fails or leaks. It ships as a single boxed unit with a rubber seal included and matches a wide range of reference numbers used across Asian and domestic makes. The thermostat’s 77°C start-to-open rating and durable metal construction make it suitable for cooling systems that require precise temperature regulation without the expense of dealer parts.

Which vehicles will this A-Premium thermostat fit?

This thermostat covers hundreds of model-year applications across Acura, Honda, Hyundai, Kia, Lexus, Mitsubishi, Nissan, Toyota, Volvo, Chrysler, Dodge, Infiniti and more. Fitment spans compact sedans, SUVs, trucks and luxury models — check the reference numbers and the start-to-open temperature when confirming fit.

• Honda: Accord (1995–2012), Odyssey (1999–2017), Pilot (2003–2015), Ridgeline (2006–2014), S2000 (2000–2009)
• Hyundai/Kia: Sonata (1999–2005), Santa Fe (2001–2009), Tucson (2005–2009), Sorento (2003–2006), Optima/Magentis (2001–2010)
• Lexus & Infiniti: GS, LS, LX, GX series and Q-series models listed in the reference set
• Also fits selected Nissan, Toyota, Mitsubishi, Chrysler, Dodge, Saturn and Volvo applications

How does the thermostat affect engine performance on daily drives?

A properly functioning thermostat helps the engine reach and maintain its designed operating temperature quickly, improving efficiency and heater output while avoiding overheating. Replacing a stuck or leaking thermostat restores predictable temperature behavior and helps the cooling system work as intended.

• 77°C start-to-open rating for timely coolant circulation
• Metal valve and rubber seal construction for reliable operation
• Helps maintain fuel efficiency and cabin heat performance

What comes with the A-Premium thermostat and how is it installed?

Each package contains one thermostat unit boxed with the gasket/seal already included for a complete replacement. Installation follows standard cooling-system procedures: drain coolant, remove housing, swap the old unit for the new thermostat and seal, reassemble, refill and bleed according to vehicle service instructions.

• Package quantity: 1 thermostat plus gasket/seal, boxed
• Materials: durable metal valve with rubber sealing components
• Reference numbers provided for cross-checking OEM part compatibility

Will this thermostat match my OEM part number and quality expectations?

The A-Premium thermostat lists numerous reference numbers used across aftermarket and OEM catalogs to help you verify compatibility. While it’s an aftermarket replacement, its construction and sealing are intended to meet the functional requirements of the specified applications.

• Reference numbers include 302-170, 302170, 5302170 and many OEM cross-refs
• Designed as a direct fit where the listed part numbers apply
• Sold individually so you can replace a single failing unit affordably

Who is this for: This A-Premium thermostat is aimed at owners and DIY mechanics who need a cost-effective, reliable replacement for a failing OEM thermostat on many Asian and domestic vehicles. It suits repair shops and enthusiasts seeking a boxed aftermarket unit with a gasket included and clear reference numbers for fitment verification. Always confirm your vehicle’s year, engine code and OEM reference before ordering to ensure correct compatibility.