Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededDESIGN ENGINEERING INC.PART NUMBER: 186-040200
Radiator Relief 16 oz
$1499
Ships on Sep 02, 2026
Lowest Price Guarantee![Racing Super Coolant Additive [16 oz.]](https://www.jegs.com/images/mini_200/500/555/555-72324.jpg)
Single Bottles
- Radiator Relief
- 16 oz
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 up to 30°F reducing engine wear that occurs during extreme use.
Radiator Relief™ is also formulated with a corrosion inhibitor that reduces mineral deposits. This is the first additive that maintains pH levels that otherwise fluctuate over time resulting in core damage.
Features - Reduces engine temperature up to 30°F
- Includes anti-foaming agent
- Formulated with a corrosion inhibitor
- No mixing required; just add to cooling system!
- Reduces pre-existing scale build-up
- Safe with all alloys
- Compatible with water and all types of anti-freeze products
- 100% Biodegradable, Non-Corrosive and Non-Toxic Additive
- For use in all water cooled engines
Part TypeCoolant / Antifreeze
BrandDESIGN ENGINEERING INC.
Package Height1.6
Package Width3.3
Package Length9.1
Weight1.15 PG
Part CategoryAccessories
Part FitmentUniversal
Vendor Part Number40200
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Racing Coolant and Antifreeze with LP-3 [1 Gallon]](https://www.jegs.com/images/mini_200/500/555/555-72316.jpg)
JEGS
Racing Coolant and Antifreeze with LP-3 [1 Gallon]
Part Number : 555-72316
$2526$36.99
You Save$11.73
![Ice Water Racing Coolant [1 Gallon, Non-Glycol]](https://www.jegs.com/images/mini_200/500/555/555-72314.jpg)
JEGS
Part Number : 555-72316
$2526$36.99
You Save$11.73
ITEM YOU MAY ALSO CONSIDER
EASY KITS
Some parts are not legal for use in California or other states with similar laws / regulations
