DMS Engine Bay Coolant Expansion Tank – 2016-2019 Cadillac CTS-V (V3)
Upgrade your cooling system with the DMS Engine Bay Tank—designed specifically for the 2016–2019 Cadillac CTS-V (V3). Whether you’re pushing your LT4-powered V3 hard on the track or just want to enhance long-term reliability, this high-capacity coolant expansion tank is the answer.
Why It Matters:
- Adds Nearly 1 Gallon of Coolant Capacity – Helps lower intake air temps (IATs) and enhances thermal stability during spirited driving.
- Improves System Efficiency – Extra volume allows trapped air to purge more effectively, resulting in smoother operation and better intercooler performance.
- Simplifies Maintenance – The integrated 1.5" billet filler neck and cap make bleeding and refilling the system quick and easy.
Key Features:
- .125" Thick Aluminum Construction – Strong, lightweight, and built to last.
- TIG Welded In-House – Precision craftsmanship for performance-focused builds.
- Satin Black Powder Coated Finish – Clean OEM+ look with added corrosion resistance.
- 3/4” Inlet/Outlet Barbs – Ensures smooth, high-flow coolant routing.
- Includes All Hardware – Hose, clamps, and fasteners included for a true bolt-in solution.
- 30-Minute Install Time – Simple installation with no cutting or custom fabrication required.
Vehicle Fitment:
- 2016, 2017, 2018, 2019 Cadillac CTS-V (Gen 3 / V3)
Whether you're chasing ETs or just want more consistent cooling performance, the DMS Engine Bay Tank is the ultimate upgrade for any V3 CTS-V owner serious about performance and reliability.
