ACDelco Radiator Outlet Tank
ACDelco Radiator Outlet Tanks: Built Around GM Specifications
The outlet tank on a crossflow radiator is where cooled coolant collects before it returns to the engine through the lower hose. Because it sits at the junction of the core, the hose neck, and often a transmission cooler or drain fitting, it sees constant thermal cycling, pressure, and vibration. Over years of service, the plastic can become brittle, the crimped seam can weep, and the gasket seal can fail. ACDelco's Radiator Outlet Tank offerings are aimed at exactly this repair, letting you renew a worn tank on supported GM vehicles.
What Sets ACDelco Apart in This Category
ACDelco is General Motors' own parts brand, and its GM Original Equipment line is described as true OE parts, either installed during production or validated by General Motors for GM vehicles. For a vehicle-specific component like an outlet tank, that matters. Tank shape, hose neck angle, port locations, and mounting points are engineered around a particular radiator and engine bay, and a replacement made to GM specifications is intended to preserve the original fit, form, and function.
Listings for these tanks typically describe them as GM-recommended replacements meant to deliver the same performance, durability, and service life as the original factory component. Many are molded black plastic designs with ribbed construction and a sealing O-ring, and part numbers are matched to specific model years and engines, from older Oldsmobile and Chevrolet passenger cars to medium-duty trucks such as the Kodiak and TopKick.
Things to Know Before You Buy
- Match the part number. Outlet tanks are vehicle specific, so confirm fitment by year, model, engine, and drivetrain rather than by appearance.
- Check the seal. Look at whether the tank includes or requires a new O-ring or gasket, and replace it whenever the tank is removed.
- Inspect the neighbors. Hoses, clamps, and the radiator cap are inexpensive to renew while the system is drained, and they share the same stress as the tank.
- Use the right coolant. Refill with the coolant type specified for your GM vehicle and bleed air from the system after installation.
Naming and Packaging Notes
GM has updated its parts branding over time, and some components once sold as ACDelco Professional or earlier GM Genuine Parts now appear under the ACDelco GM Original Equipment name, while some ACDelco GM OE items have since moved to GM Genuine Parts. Part numbers are the most reliable way to cross-reference, so rely on the number rather than the label when comparing.
Explore More
To see the full range of cooling and other GM-matched components, visit the ACDelco brand page. If you would like to compare outlet tanks from other manufacturers, browse the complete Radiator Outlet Tank category.