Coolant Overflow Expansion Tank for Ford Transit Connect (2014-2018) 2.5L

Direct-Fit Coolant Overflow Expansion Tank for 2014-2018 Ford Transit Connect (V408)

What it Does: The Coolant Overflow Expansion Tank replaces the leak-prone factory degassing tank on the 2014-2018 Transit Connect to restore sealed, pressurized cooling system integrity and prevent engine overheating.

The Stock Ford Transit Connect Expansion Tank Degradation

The factory cooling reservoir on the V408 platform suffers from extreme thermal fatigue caused by commercial duty cycles and continuous underhood heat soak. Under constant expansion and contraction cycles, the factory molded polypropylene crystallizes and turns brittle. Stress fractures routinely develop along the sonic-welded horizontal assembly seam and around the inlet and return heater hose necks. These micro-cracks bleed off nominal system operating pressure (typically 21 psi), lowering the boiling point of the 50/50 ethylene glycol mix, inducing localized coolant vaporization, persistent sweet fluid odors, and sudden loss of pressure head that risks severe cylinder head warpage on the Duratec 25 power unit.

The Engineering Solution

Engineered to original equipment tolerances, this direct-fit pressurized degassing tank utilizes high-density, heat-stabilized virgin polymer resin formulated to withstand aggressive temperature swings without structural embrittlement. Precision-molded mounting tabs align with OEM chassis anchor points, while reinforced barbed hose necks resist fatigue from engine vibration and clamping loads. The translucent reservoir wall ensures immediate visual meniscus checks for rapid routine fleet inspections. Included is a freshly calibrated, spring-loaded OE-spec pressure cap that accurately regulates internal pressure and vacuum recovery, keeping your closed-loop cooling circuit completely sealed under peak fleet duty.

Technical Specifications

Compatibility

• 2014 Ford Transit Connect (XL, XLT, Titanium) 2.5L I4
• 2015 Ford Transit Connect (XL, XLT, Titanium) 2.5L I4
• 2016 Ford Transit Connect (XL, XLT, Titanium) 2.5L I4
• 2017 Ford Transit Connect (XL, XLT, Titanium) 2.5L I4
• 2018 Ford Transit Connect (XL, XLT, Titanium) 2.5L I4
• Note: Fits naturally aspirated 2.5L Duratec models only; does not fit 1.6L EcoBoost.

Frequently Asked Questions

Does this fit the V408 Transit Connect?

Yes, this is a direct fit for the 2014-2018 Ford Transit Connect equipped with the Duratec 25 engine.

Do I need to replace the pressure cap when installing this reservoir?

A new, pre-calibrated pressure cap is already included with this unit to ensure system sealing pressure is completely refreshed.

The Ford Commercial Caliber

Light commercial fleet vehicles rely on thermal stability to maintain maximum uptime under severe stop-and-go delivery loads, and this replacement reservoir is designed to ensure factory-grade pressure retention to protect your work van from costly overheating downtime.