DEI
DEI Radiator Relief Heater Hotter - 16oz.
DEI Radiator Relief Heater Hotter - 16oz.
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DEI coolant additive, part number 040206.
Heater Hotter solves the problem of slow warm up times and waiting for your vehicle to thaw in winter months.
Heater Hotter is specially formulated to accelerate the transfer of heat from the engine to the antifreeze in frigid climates. It allows your HVAC system in your vehicle to operate more efficiently, and for you to get comfortable, ice melting, window defrosting warm air up to 50% faster in even sub-zero temperatures. Heater Hotter is safe to mix with all types of anti-freeze.
Note: Your vehicles cooling system and thermostat must be functioning properly for Heater Hotter to be effective.
Key Features
- Heater gets warm 50% faster - don't freeze in your seats - get warm air fast
- Defrost windows in half the time - defroster will blow warm air to defrost windows quickly
- Melt ice and snow away - less scraping
- Enhances benefits of remote starter - start your car from inside and let it warm up quickly
- Compatible with aluminum radiators
- Pour directly into radiator. Heater Hotter must cycle and mix with existing antifreeze before becoming effective
- Performance will not dissipate over time
Fitment
- Universal application โ listed by part number and specification. Confirm the size and specifications below against your application.
Confirm the model year, the configuration and the part number against your vehicle before ordering.
DEI warrants this product to the original retail purchaser to be free from defects in material and workmanship for as long as the purchaser owns the vehicle on which it was originally installed. Coverage is limited to repair or replacement of the defective part, or a refund of the original purchase price, at the manufacturer's option. The warranty does not cover finish wear, misuse, accident, alteration, installation contrary to the instructions, or products installed on vehicles for race or competition.
Specifications
- Brand: DEI (Design Engineering)
- Manufacturer Part Number: 040206
- Type: Coolant Additive
- Manufacturer Warranty: Limited Lifetime
- Condition: New
- UPC: 607078402066
Images are for illustrative purposes. The product you receive may differ in finish or packaging from the photograph.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Manufacturer's Warranty โ DEI
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Manufacturer's Warranty โ DEI
DEI (Design Engineering, Inc.) warrants its products to the original retail purchaser, with proof of purchase, to be free from defects in material and workmanship for as long as the purchaser owns the vehicle on which the product was originally installed. If a product is found by DEI to be defective, DEI will, at its option, repair or replace it or refund the original purchase price. Not covered: damage or defects in the finish of a product; products that have been misused, damaged by accident or negligence, altered or modified, installed contrary to DEI’s installation instructions, or repaired by an unauthorized service facility; and products installed on vehicles used for racing or competition. The warranty does not cover labor, removal, installation or reinstallation, freight or transportation charges, or incidental and consequential damages. Claims start with the place of purchase: return the product to where it was bought for a warranty determination within thirty (30) days of purchase. If the claim is not resolved there, DEI issues a Return Goods Authorization and the product is returned to DEI prepaid with the dated proof of purchase and a written description of the problem. For DEI parts bought from PitStopTuning, start your claim with us.
Warranty terms are set by the manufacturer and may change. Contact us if you need help with a warranty claim.

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