A-Premium Engine Coolant Thermostat for Toyota & Lexus — 82°C Opening with Integrated Seal

This high-quality replacement thermostat from A-Premium is built from metal and durable rubber, ships in a protective box, and includes the sealing gasket needed for a direct-fit installation. It opens at 82°C (179.6°F) and is engineered to match the fit and function of multiple factory reference numbers, making it a practical choice when your vehicle’s cooling system needs a reliable temperature-regulating component.

Which cars will this A-Premium thermostat fit?

This thermostat covers a wide range of Toyota and Lexus models plus select Mitsubishi, Scion, Pontiac, Chevrolet and other makes where the listed reference numbers match OEM parts. Fitment spans many model years, including popular vehicles like Camry, Corolla, RAV4, Highlander, Tacoma and Lexus RX/ES series.

• Toyota: Camry (1988–2017), Corolla (2000–2019), RAV4 (2001–2018), Tacoma (1995–2004), Tundra (2000–2004), and more.
• Lexus: ES250/300/330/350 (various years), RX300/330/350/400h/450h, LS400 and others listed.
• Additional fitment: Mitsubishi Eclipse/Galant/Outlander, Scion tC/xB/xD, Pontiac Vibe, Chevrolet Prizm and select Dodge/Eagle/Ford models.

How does the seal and construction benefit longevity?

The package includes a molded rubber seal matched to the thermostat housing to minimize leaks and maintain consistent coolant flow. Metal components resist warping at operating temperatures, and the included seal reduces the chance of aftermarket misfit that can lead to coolant loss.

• Included rubber seal for immediate, leak-resistant installation.
• Metal body to withstand heat cycling without deformation.
• Engineered to open at a precise 82°C threshold for stable thermostat operation.

What reference numbers and specs should I check before ordering?

Confirm compatibility by comparing your vehicle’s OEM thermostat reference number to the list of cross-references supplied with this part. The A-Premium unit covers numerous part numbers used across brands and years; checking your current thermostat number prevents returns and ensures a correct fit.

• Common cross-references include 90916A3003, 9091603129, MD315301 and others in the listing.
• Specification highlights: opens at 82°C, material: metal and rubber, package quantity: 1.
• Ships boxed with seal — ready for a one-to-one replacement.

Is installation straightforward for DIY mechanics?

Many owners and mechanics can replace this thermostat with basic tools; however, access varies by vehicle. Drain the coolant, remove the thermostat housing, swap the thermostat and seal, then refill and bleed the cooling system per manufacturer procedure to avoid air pockets.

• Requires coolant drain, housing removal and gasket seating skills.
• Torque hardware to factory specs and refill with proper coolant mixture.
• Bleed the system to prevent overheating or heater performance issues.

Who is this for: The A-Premium thermostat with seal is intended for owners, independent garages and professional technicians replacing a worn or failed thermostat on compatible Toyotas, Lexuses and related models. Choose this part when you need a boxed replacement that matches common OEM reference numbers, includes a seal for a cleaner install, and opens at the standard 82°C threshold for typical gasoline-powered engines.