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DEI

DEI Radiator Relief Heater Hotter - 16 oz.

MPN: 40206 Catalog #: 001607903 Category: Coolants Check Vehicle Fitment

Product Details

Heater Hotter(TM) 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.

Heater Hotter(TM) solves the problem of slow warm up times and waiting for your vehicle to thaw in winter months. Heater Hotter formulated specifically to accelerate the transfer of heat from engine to cooling system in frigid climates that otherwise increase engine wear. Heater Hotter's unique formula allows your vehicle's heater to warm up 50% faster in even sub-zero temperatures and is safe to mix with all types of anti-freeze. Just simply add to your radiator.

All Radiator Relief coolant additives are specially formulated to reduce the bubbles that form on hot metal surfaces, such as cylinder heads, known as surface tension. Radiator Relief improves heat transfer from the engine to the coolant while reducing cavitation and scaling.

Heat Hotter™ Antifreeze Additive; 16 oz.;

DEI Radiator Relief Heater Hotter - 16 oz.

Heat Hotter™ Antifreeze Additive

EngCoolAdditive

HEATER HOTTER

Universal

Vehicle Fitment

Universal or product-specific fitment. Please review the product details and contact us if you need help confirming fitment before ordering.

Product Specs

Brand
DEI
Part Number
40206
Catalog Number
001607903
Product Line
Radiator Relief
Category
Cooling
Type
Coolants
UPC / Barcode
607078402066
Vendor Product Category
Cooling
Vendor Product Subcategory
Coolants
Length
8.00 in
Width
3.00 in
Height
2.00 in
Weight
1.20 lb
Units Per SKU
1
Freight / LTL
No
Ship Alone
No
Air Restricted
Yes
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status 234 Available - Ready to ship
Estimated timing Usually ships within 24hrs

This item is showing available inventory. Most in-stock performance parts ship quickly, but timing can vary by warehouse, vendor cut-off time, holidays, and carrier pickup.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 234 available as of 6/3/2026.

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