Skip to Product Info
    • DSN40104.jpg
    • 40104-P04-FRO.jpg
    • 40104-P02-BAC.jpg
    • 40104-P02-FRO.jpg
    • 40104-P04-BAC.jpg
    • Prop 65 Warning.jpg
    • SEMA CARB EO 4.png
    • DEI-Logo.png

    Design Engineering One 32 oz bottle of Radiator Relief. 40104

    Part Number: 40104
    Regular Price $24.99

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
    Payment & Security

    Secure, encrypted checkout. Card details go straight to the payment processor and are never stored by us.

    • Amazon
    • Amazon
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Venmo
    • Visa
    Share to:
    Radiator Relief(TM) solves the problem of high engine temps by reducing coolant temperatures up to 30 degrees. Radiator Relief is an excellent method of treating cooling systems as a preventive step to help avoid overheating, electrolytic (electrolysis) and chemical corrosion and is compatible with all coolant additives and anti-freeze mixtures. Both an anti-foaming agent and corrosion inhibitor which balances the negative acidic effects that can develop over time are also included. Radiator Relief is also safe to use with all types of radiator materials including cast iron, copper, brass and aluminum. Radiator Relief supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature reducing engine wear that occurs during extreme use. Radiator Relief is also formulated to reduces mineral deposits. This is the first additive that maintains pH levels that otherwise fluctuate over time resulting in core damage. Reduces engine temps up to 30F Includes anti-foaming agent Corrosion inhibitor Reduces pre-existing scale build-up Compatible with all types of anti-freeze Recommended 1 oz per quart of coolant


    Design Engineering One 32 oz bottle of Radiator Relief. 40104


    Specifications:

    Radiator Material Compatibility All
    Color Clear
    Grade Type Performance
    Volume 32 oz.
    Title DEI 40104 Clear Radiator Relief 32 oz. 040104
    Includes One 32 oz bottle of Radiator Relief.
    Prop 65 - Short label WARNING: Cancer and Reproductive Harm - www.p65warnings.cs.gov
    Prop 65 - Long label WARNING: This product contains a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm. www.P65Warnings.ca.gov
    Prop 65 Yes/No Yes
    Description_ASC Radiator Relief(TM) solves the problem of high engine temps by reducing coolant temperatures up to 30 degrees. Radiator Relief is an excellent method of treating cooling systems as a preventive step to help avoid overheating, electrolytic (electrolysis) and chemical corrosion and is compatible with all coolant additives and anti-freeze mixtures. Both an anti-foaming agent and corrosion inhibitor which balances the negative acidic effects that can develop over time are also included. Radiator Relief is also safe to use with all types of radiator materials including cast iron, copper, brass and aluminum. Radiator Relief supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature reducing engine wear that occurs during extreme use. Radiator Relief is also formulated to reduces mineral deposits. This is the first additive that maintains pH levels that otherwise fluctuate over time resulting in core damage. Reduces engine temps up to 30F Includes anti-foaming agent Corrosion inhibitor Reduces pre-existing scale build-up Compatible with all types of anti-freeze Recommended 1 oz per quart of coolant
    Description_DEF Engine Coolant Additive
    Description_DES Radiator Relief 32 oz. Clear
    Description_EXT One 32 oz bottle of Radiator Relief.
    Description_FAB Reduces Engine Temp Up To 30 Degrees F
    Description_FAB Note: Radiator Relief is not intended to and cannot fix a malfunctioning thermostat.
    Description_FAB Includes Anti-Foaming Agent
    Description_FAB Formulated With A Corrosion Inhibitor
    Description_FAB Reduces pre-existing scale build-up
    Description_FAB Compatible with all types of anti-freeze
    Description_FAB Compatible with aluminum radiators
    Description_FAB Must cycle and mix with existing coolant before effective
    Description_FAB Performance will not dissipate over time
    Description_FAB Recommended 1 oz per quart of coolant
    Description_INV Clear Radiator Relief 32 oz.
    Description_KSW 40104
    Description_KSW relief
    Description_KSW 32
    Description_KSW oz
    Description_KSW ounce
    Description_KSW jug
    Description_KSW ounces
    Description_KSW 040104
    Description_KSW 040104
    Description_KSW coolant
    Description_KSW clear
    Description_KSW additive
    Description_KSW radiator
    Description_KSW relief
    Description_KSW intercooler
    Description_LAB Clear Radiator Relief(TM) - 32 oz.
    Description_MKT Radiator Relief(TM) solves the problem of high engine temps by reducing coolant temperatures up to 30 degrees. Radiator Relief is an excellent method of treating cooling systems as a preventive step to help avoid overheating, electrolytic (electrolysis) and chemical corrosion and is compatible with all coolant additives and anti-freeze mixtures. Both an anti-foaming agent and corrosion inhibitor which balances the negative acidic effects that can develop over time are also included. Radiator Relief is also safe to use with all types of radiator materials including cast iron, copper, brass and aluminum. Radiator Relief supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature reducing engine wear that occurs during extreme use. Radiator Relief is also formulated to reduces mineral deposits. This is the first additive that maintains pH levels that otherwise fluctuate over time resulting in core damage. Reduces engine temps up to 30F Includes anti-foaming agent Corrosion inhibitor Reduces pre-existing scale build-up Compatible with all types of anti-freeze Recommended 1 oz per quart of coolant
    Description_SHO EngCoolAdditive


    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

    Recently Viewed