Aluminum Coolant Overflow Expansion Tank for Ford F-150 (2015-2024) 2.7L 3.3L 3.5L 5.0L

Heavy-Duty Aluminum Coolant Overflow Expansion Tank for 2015-2024 Ford F-150 (P552 / P702)

What it Does: The Aluminum Coolant Overflow Expansion Tank directly replaces the failure-prone factory plastic degas bottle on the 2015-2024 Ford F-150 to prevent pressurized coolant loss, seam separation, and overheating under severe operating conditions.

The Stock Ford F-150 Plastic Degas Tank Failure

The factory cooling reservoir on the P552 and P702 chassis is constructed from blow-molded plastic prone to micro-fractures. Sustained elevated engine bay temperatures degrade the polymer structure over time. The repetitive thermal expansion and contraction cycles—amplified by high-boost operation in the EcoBoost engines and sustained load in the Coyote V8—weaken the center ultrasonic weld seam. This degradation frequently leads to hairline fractures, neck deformation at the quick-disconnect hose barbs, and sudden depressurization while towing. A loss of pressure compromises boiling-point elevation, exposing cylinder heads to hot-spotting and thermal warp.

The Engineering Solution

Engineered as a permanent mechanical fix, this expansion tank is fabricated from lightweight, structural-grade aluminum alloy. Featuring continuous precision TIG welds, the tank easily withstands standard 16–21 PSI operating pressures without ballooning, seam weeping, or material fatigue. Internal baffling controls fluid aeration and slosh during off-camber driving and aggressive braking. The tank retains direct compatibility with OEM brackets, quick-release heater hoses, and the standard pressure relief cap, restoring cooling system integrity without requiring custom fabrication.

Technical Specifications

Compatibility

• 2015-2024 Ford F-150 2.7L V6 EcoBoost
• 2018-2023 Ford F-150 3.3L V6 Duratec
• 2015-2024 Ford F-150 3.5L V6 EcoBoost
• 2015-2024 Ford F-150 5.0L V8 Coyote
• Note: Excludes 3.0L Power Stroke Diesel models

Frequently Asked Questions

Does this fit the P552 and P702 chassis F-150?

Yes, this tank bolts directly to the factory mounting studs across both the P552 and P702 chassis platforms utilizing the original hoses.

Can I reuse my factory coolant expansion tank cap?

Yes, the aluminum neck is machined to accept the factory Ford pressure-relief cap.

The Ford Towing & Hauling Standard

Engineered to handle extreme thermal loads during heavy payload transport and high-altitude towing, this all-aluminum expansion tank eliminates the weakest mechanical link in the modern F-150 cooling circuit.