Heating and Cooling› Thermostats, Housings and Fillers

Aisin OEM

Engine Coolant Thermostat

$19.99

SKU: THT-019

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Aisin THT-019 is an engine coolant thermostat designed for efficient, consistent performance. This thermostat is OE matched, ensuring perfect OE form, fit, and function. A jiggle pin is included. Note: Gasket not included.
Show original supplier description
The Aisin THT-019 Engine Coolant Thermostat is engineered to meet OE specifications, ensuring your vehicle's cooling system performs efficiently and consistently. Designed for precise temperature regulation, it maintains the optimal operating temperature of 180°F (82°C) to keep your engine running smoothly and prevent overheating or under-cooling issues. This thermostat is OE matched, meaning it provides the exact form, fit, and function as the original equipment, simplifying installation and ensuring reliable operation. It comes with a jiggle pin for proper installation, but the gasket is sold separately. This thermostat is compatible with a wide range of Lexus, Scion, and Toyota vehicles. Specific fitment includes models such as Lexus ES, HS, LS, RX, SC; Scion tC, xB, xD; and numerous Toyota models including 4Runner, Avalon, Camry, Corolla, Highlander, RAV4, Sienna, Tacoma, and Tundra, among others. Always verify specific fitment details with the vehicle's fit checker to ensure compatibility with your exact year, make, model, and engine.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAisin OEM
Part NumberTHT-019
CategoryHeating and Cooling

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy