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Koyorad is committed to manufacturing radiators with the best in quality; meeting or exceeding OE standards.   Koyorad Cooling Systems, Inc. highly recommends leaving all installations for a professional ASE Certified mechanic.  Koyorad All Aluminum Racing radiators may require slight trimming of the inlet and outlet coolant hoses to accommodate the increased thickness.  Unless otherwise stated, Koyorad All Aluminum radiators are application specific for an easy install and will bolt directly to your factory OEM fan shrouds/fans.  Note:  There are a small amount of vehicle specific applications that may require some modification or even fabrication to make fit correctly.  This is sometimes contributed to slight changes in a car maker's production/parts and especially in conjunction with other aftermarket modifications. Once installed, extreme care must be taken to eliminate all air from the vehicle cooling system.  Koyorad Cooling Systems, Inc. will not accept damaged products due to neglecting to completely remove air in the cooling system.


Recommended Antifreeze Coolant

It is important that the proper coolant is used for your Koyorad Radiator.  We highly recommend the use of the coolant grade listed in every vehicles owner’s manual.  High quality antifreeze and coolant protects your engine by lowering water’s freezing point and raising water’s boiling point.  Antifreeze and coolant provides anti-corrosion properties for the metals in your radiator and cooling passages within your vehicles engine.  It also provides proper lubrication for the engine water pump. A minimum 50/50 coolant/water ratio is mandatory for safe operation and resistance to corrosion in the radiator and any aluminum in the cooling system.  Operating the vehicle with only water (distilled, straight, tap, de-ionized, de-mineralized), or water (distilled, straight, tap, de-ionized, de-mineralized) and an additive without coolant or coolant ratio less than 50%, can cause aggressive corrosion in the cooling system.  If the proper 50/50 coolant/water mix is used, cooling system additives are not necessary and not recommended.

When a new Koyorad All Aluminum Racing Radiator is installed, we require a complete cooling system flush and fill with new coolant mixed 50/50 with distilled, de-ionized or de-mineralized water. Neglecting a full cooling system flush or using the wrong coolant may result in corrosion, leaks, and premature wear and tear, not to mention other stresses on your engines cooling system.


Shipping Damage and Mis-Shipments

If shipping damage occurs, it is the customer's responsibility to handle claims through the carrier.   If an incorrect item is received, it is the responsibility of the customer to immediately contact the Koyorad dealer where the item was purchased.


Koyorad Cooling Systems, Inc. LIMITED WARRANTY

Koyorad takes pride in the quality of our products.  Every Koyorad performance radiator is subject to a series of quality inspections including a total of three pressure tests during their production process.

Koyorad Cooling Systems, Inc. has warranty agreements in place with all of our Authorized Warehouse Distributors and is unable to handle warranty related inquires directly from end users. Warranty related inquiries must be directed to the point of purchase of the Koyorad product.

Amazon, eBay and Un-Authorized Koyorad Dealers
We highly advise caution when purchasing Koyorad products from Amazon (including third party sellers), eBay (including third party sellers), and Un-Authorized Koyorad Dealers.  Post purchase, these sellers may be difficult to contact or may not offer the Koyorad limited warranty or any warranty claim services.  Any Koyorad product purchase from Amazon (including third party sellers), eBay (including third party sellers), and Un-Authorized Koyorad Dealers will be at your own risk.  Koyorad will not be responsible for our products purchased through these sellers.  For the best service, contact one of our authorized dealers listed on this website for a qualified referral.

Koyorad warranty applies to original purchaser only.  Koyorad cannot be held responsible for damage caused by: Accident or vehicle collision, modification of the product, installation error, impact, impact from road debris, or negligence of the vehicle cooling system.

Koyorad products sold through USA distributors are destined for use within the USA only.

If a problem with a Koyorad product should occur, immediately contact the Authorized Koyorad Dealer from whom you purchased the product and notify them of the problem.   Koyorad encourages taking clear, detailed digital photos of the problem.  (Although this will not eliminate the need for a physical inspection, photos can significantly decrease the claims processing time.) 


Prepare the following to submit to the Koyorad Authorized Dealer:


·    A detailed description of the problem

·    Clear digital photos of the problem

·    Copy of your original invoice

·    A list of all modifications to the vehicle

·    Part number

·    Date of purchase

·    The purchase price

·    Your name and address

·    Daytime phone number


Once you have submitted the above information to the Koyorad Authorized dealer and they have confirmed receipt of the above information, the Koyorad Authorized dealer will contact us and begin the claims process.



This limited warranty is not transferable to any third party, including but not limited to any subsequent purchaser or owner of the Product. This limited warranty does not cover, and is void with respect to: (i) improper installation, storage, repair, maintenance, modification, defects or failures due to misuse, neglect, negligence, abuse, accident, physical damage, improper handling or shipping, abnormal operation or operation contrary to furnished instructions or warnings, exposure to fire, water, excessive vibration or moisture or dampness, or any substance inside or outside the operating system, or extreme jarring/shaking and changes in climate or temperature; (ii) cosmetic damage; (iii) Products on which serial numbers have been removed, altered or rendered illegible; (iv) cost of installation, removal or reinstallation; or (v) damage resulting from fire, flood, or other acts of God or other acts which are not the fault of Koyorad Cooling Systems, Inc.



Some states do not allow one or more of the above specified exclusions or limitations. This warranty gives you specific legal rights and you may also have other rights, which vary from state to state.


User Policy

All content included on this site, such as copy (text), graphics, button icons, logos, images, video and audio clips, is the property of Koyorad Cooling Systems, Inc. | Koyorad Radiator Co. Ltd. and protected by U.S. and international copyright laws. All trademarks, service marks, and trade names are proprietary to Koyorad Cooling Systems, Inc. | Koyorad Radiator Co. Ltd. All other trademarks not owned by Koyorad Cooling Systems, Inc. | Koyorad Radiator Co. Ltd. or its subsidiaries that appear on this site are the property of their respective owners, who may or may not be affiliated with, connected to, or sponsored by Koyorad Cooling Systems, Inc. | Koyorad Radiator Co. Ltd. Any unauthorized use of the materials appearing on this site may violate copyright, trademark and other applicable laws and could result in criminal or civil penalties. All copy (text), graphics, button icons, logos, images, video and audio clips used on this site may not be reproduced, modified, distributed, transmitted, or republished.



                                                                                                                                 Effective 11/06



All content, including any and all copy (text), images, radiator design, diagrams, logos, etc. on this website may not be used or copied without written authorization.

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