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- Description
- Fitment
- Warranty and Refund
- Reviews
Keep your cooling system operating at the correct temperature with the Motorad 298-170 Engine Coolant Thermostat. Built by an OE supplier to OEM specifications, this thermostat uses a copper case and wax compound to deliver rapid, consistent response as coolant temperature changes, helping protect your engine from overheating or running too cool. The offset design and included air relief valve support proper installation and coolant flow, while OEM-style seals are included where applicable to help maintain a reliable seal. This thermostat fits a wide range of applications spanning 1991-2017 model years across Lexus, Toyota, Scion, Mitsubishi, and Dodge vehicles, including popular models like the 4Runner, Tacoma, Prius, and Supra. Backed by OEM-quality materials and manufacturing processes, the 298-170 is a straightforward replacement designed to restore accurate cooling system performance.
Features
- Copper case and wax compound provide rapid, accurate response to coolant temperature changes for reliable engine protection.
- Offset design with integrated air relief valve supports proper coolant flow and easier bleeding during installation.
- OEM-style seals included where applicable help maintain a dependable seal against coolant leaks.
- Manufactured to OEM specifications and processes by an OE supplier for consistent fit and function.
- Broad vehicle coverage across Lexus, Toyota, Scion, Mitsubishi, and Dodge models from 1991-2017.
Application Summary
1991-1995 Toyota Previa 2.4L 2438CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS1992-2000 Lexus SC300 3.0L 2997CC -CID L6 DOHC 24 Valve Naturally Aspirated GAS
1993-1996 Toyota Supra 3.0L 2997CC -CID L6 DOHC 24 Valve Turbocharged GAS
1993-2005 Lexus GS300 3.0L 2997CC -CID L6 DOHC 24 Valve Naturally Aspirated GAS
1994-1998 Toyota T100 2.7L 2694CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS
1995-2000 Toyota Tacoma 3.4L 3378CC -CID V6 DOHC 24 Valve Naturally Aspirated GAS
1996-1997 Toyota Previa 2.4L 2438CC -CID L4 DOHC 16 Valve Supercharged GAS
1996-2000 Toyota 4Runner 3.4L 3378CC -CID V6 DOHC 24 Valve Naturally Aspirated GAS
1997-1998 Toyota Supra 3.0L 2997CC -CID L6 DOHC 24 Valve Naturally Aspirated GAS
2000-2005 Toyota Echo 1.5L 1497CC 91CID L4 DOHC 16 Valve Naturally Aspirated GAS
2001-2005 Lexus IS300 3.0L 2997CC -CID L6 DOHC 24 Valve Naturally Aspirated GAS
2001-2007, 2010-2014, 2016 Toyota Tacoma 2.7L 2694CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS
2001-2009 Toyota Prius 1.5L 1497CC 91CID L4 DOHC 16 Valve Naturally Aspirated FULL HYBRID EV-GAS (FHEV)
2004 Toyota Tacoma 2.4L 2438CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS
2004-2005 Toyota Yaris 1.3L 1299CC 79CID L4 DOHC 16 Valve Naturally Aspirated GAS
2004-2006 Scion xA 1.5L 1497CC 91CID L4 DOHC 16 Valve Naturally Aspirated GAS
2004-2006 Scion xB 1.5L 1497CC 91CID L4 DOHC 16 Valve Naturally Aspirated GAS
2004-2014 Toyota Hilux 2.7L 2694CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS
2006-2007, 2017-2019 Toyota Hiace 2.7L 2694CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS
2006-2018 Toyota Yaris 1.5L 1497CC 91CID L4 DOHC 16 Valve Naturally Aspirated GAS
2008-2009 Dodge Van 1000 2.4L 2351CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS
2008-2009 Mitsubishi Outlander 3.0L 2998CC 182CID V6 SOHC 24 Valve Naturally Aspirated GAS
2008-2009 Toyota Tacoma 4.0L 3956CC 241CID V6 DOHC 24 Valve Naturally Aspirated GAS
2008-2010 Toyota Hiace 2.5L -CC -CID L4 U/K U/K Valve Turbocharged DIESEL
2009 Mitsubishi Lancer 2.4L 2360CC 144CID L4 DOHC 16 Valve Naturally Aspirated GAS
2010 Mitsubishi Outlander 2.4L 2360CC 144CID L4 DOHC 16 Valve Naturally Aspirated GAS
2010 Toyota 4Runner 2.7L 2694CC -CID L4 DOHC 16 Valve Naturally Aspirated GAS
2010-2011 Mitsubishi Lancer 2.0L 1998CC 122CID L4 DOHC 16 Valve Turbocharged GAS
2011-2014, 2016 Toyota Hiace 3.0L -CC -CID L4 U/K U/K Valve Turbocharged DIESEL
2012-2015 Mitsubishi Lancer 2.0L 1998CC 122CID L4 DOHC 16 Valve Naturally Aspirated GAS
2016 Toyota Yaris R 1.5L 1496CC 91CID L4 DOHC 16 Valve Naturally Aspirated GAS
Specifications
- Brand: Motorad
- Part Number: 298-170
- Part Type: Engine Coolant Thermostat
- UPC: 055644298702
- GTIN: 00055644298702
- Item Dimensions: 2.2500 x 2.2500 x 2.2500 IN
- Package Dimensions: 2.2500 x 2.2500 x 2.2500 IN
- Package Weight: 0.1500 PG
- Package Quantity: 1 EA
- Material: Stainless Steel
- Material: Copper
- Gasket or Seal Pre-Installed: No
- Sealing Flange Outside Diameter: 2.2
- Sealing Flange Outside Diameter: 55.88
- Height Between Flanges: 1.44
- Height Between Flanges: 36.58
- MAP Controlled: No
- Grade Type: OEM
Interchange
- CST: 4107
- Parts Master: 29870
- Motorad: 298-170
- FVP Caps & Thermostats: 298-170
- Murray Temperature Control: 4107
- Duralast: 4107BP
- Pronto: 298-170
- Federated: 298-170
- Mighty Distributing System: 4107
- Parts Plus: P4107
- Worldparts: 9298170
- Stant: 14107
- Pep Boys: 298-170
- Balkamp: 170-892
- Carquest Premium Caps and Stats: 298-170
Warranty
- Warranty Duration: 12 Months
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.









