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SKU: 637-180
Categories:
100% ORIGINAL AND QUALITY
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- Description
- Fitment
- Warranty and Refund
- Reviews
The Motorad 637-180 is a complete Engine Coolant Thermostat Housing Assembly built to OEM specifications for Toyota Tundra, Sequoia, Land Cruiser, and select Lexus models including LS460, LS600h, LX570, and GX460. Constructed with copper, stainless steel, and plastic components, this assembly features a disk-type mechanical thermostat that opens at 180°F (82.22°C) for consistent cooling system performance. It includes a rubber seal and jiggle pin check valve, plus a bleeder hole for proper air relief during coolant refills. With three mounting holes and a single outlet port measuring approximately 1.2 inches in diameter, installation follows the original equipment layout. Because the gasket or seal is included but mounting hardware is not, buyers should confirm they have the necessary fasteners on hand before installation. This housing assembly suits shops and DIYers seeking a direct-fit cooling system component without sourcing separate parts.
Features
- Disk-type thermostat opens at 180°F for consistent, OEM-style coolant temperature regulation
- Rubber seal included so you skip a separate parts search before installation
- Jiggle pin check valve helps release trapped air for smoother cooling system bleeding
- Bleeder hole design supports proper air relief during coolant system fill-up
- Copper, stainless steel, and plastic housing matches original equipment fit and layout
Application Summary
2007-2008, 2010-2011, 2015-2021 Toyota Tundra 5.7L 5663CC 345CID V8 DOHC 32 Valve Naturally Aspirated GAS2007-2017 Lexus LS460 4.6L 4608CC -CID V8 DOHC 32 Valve Naturally Aspirated GAS
2008, 2010-2012, 2018-2022 Toyota Sequoia 5.7L 5663CC 345CID V8 DOHC 32 Valve Naturally Aspirated GAS
2008-2011 Lexus GS460 4.6L 4608CC -CID V8 DOHC 32 Valve Naturally Aspirated GAS
2008-2011, 2013-2021 Lexus LX570 5.7L 5663CC 345CID V8 DOHC 32 Valve Naturally Aspirated GAS
2008-2011, 2013-2021 Toyota Land Cruiser 5.7L 5663CC 345CID V8 DOHC 32 Valve Naturally Aspirated GAS
2008-2014 Lexus IS F 5.0L 4969CC 303CID V8 DOHC 32 Valve Naturally Aspirated GAS
2008-2016 Lexus LS600h 5.0L 4968CC -CID V8 DOHC 32 Valve Naturally Aspirated FULL HYBRID EV-GAS (FHEV)
2009, 2012-2018 Toyota Tundra 5.7L 5663CC 345CID V8 DOHC 32 Valve Naturally Aspirated FLEX
2009-2017 Toyota Sequoia 5.7L 5663CC 345CID V8 DOHC 32 Valve Naturally Aspirated FLEX
2010-2014, 2019 Toyota Tundra 4.6L 4608CC -CID V8 DOHC 32 Valve Naturally Aspirated GAS
2010-2023 Lexus GX460 4.6L 4608CC -CID V8 DOHC 32 Valve Naturally Aspirated GAS
2015-2025 Lexus RC F 5.0L 4969CC 303CID V8 DOHC 32 Valve Naturally Aspirated GAS
2016-2020 Lexus GS F 5.0L 4969CC 303CID V8 DOHC 32 Valve Naturally Aspirated GAS
2018-2025 Lexus LC500 5.0L 4969CC 303CID V8 DOHC 32 Valve Naturally Aspirated GAS
2022-2025 Lexus IS500 5.0L 4969CC 303CID V8 DOHC 32 Valve Naturally Aspirated GAS
Part Numbers: 637-180
Specifications
- Brand: Motorad
- Part Number: 637-180
- Part Type: Engine Coolant Thermostat Housing Assembly
- UPC: 055644637808
- GTIN: 00055644637808
- Package Dimensions: 13.2 x 12.2 x 6.2 IN
- Package Weight: 2.13 LB
- Package Quantity: EA
Returns
30-Day Money-Back Guarantee
We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.
To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.
Return Requirements:
- Items must be securely packed in the original manufacturer's packaging.
- All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
- You must obtain and retain the tracking number for your return.
Non-Returnable Items:
- Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.
We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.
Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.
Warranty
Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.
This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.
Exclusions:
The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.
Warranty Claims Process:
- All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
- No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
- The buyer assumes all risk of damage resulting from improper installation.
All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.
Shipping
We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).
Shipping to Other Locations:
A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.
Order Processing & Tracking:
- Orders are shipped Monday through Friday, excluding holidays.
- Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
- A tracking number will be emailed within one business day after shipping.
If you do not receive a tracking number, please:
- Check your spam/junk folder.
- If it's not there, contact us via phone or eBay message for assistance.
International Orders:
Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.