SYKRSS Coolant Reservoir Tank for Ford Transit 150/250/350 (2015–2019) — Direct-Fit Polypropylene, Translucent Overflow Bottle

SYKRSS Coolant Reservoir Tank 603-844 is a direct-fit replacement overflow bottle engineered to meet OE form, fit and function for 2015–2019 Ford Transit 150/250/350 models.

This replacement coolant expansion tank (OE equivalents BE8Z8100A, BK2Z8A080B, DG9Z8100A) is manufactured from heat-resistant polypropylene and designed to restore proper coolant recovery and visible antifreeze level monitoring without removing the radiator cap. It’s intended for Transit vans with 3.2L I5, 3.5L V6 and 3.7L V6 engines and provides a cost-effective way to maintain your cooling system’s efficiency and reliability.

How will this reservoir tank fit my 2015–2019 Ford Transit?

The SYKRSS 603-844 matches the original tank’s mounting points and hose connections to ensure a straightforward swap with no modification required. Fitment covers Transit-150, Transit-250, Transit-350 and Transit-350 HD across the listed engine options.

• Direct replacements for OE numbers BE8Z8100A, BK2Z8A080B, DG9Z8100A
• Designed for 2015–2019 Transit 150/250/350 models
• Compatible with 3.2L I5, 3.5L V6, 3.7L V6 engines
• Swap-in design preserves original hose routing and mounting points

What material and durability can I expect from this coolant bottle?

The tank is molded from high-grade polypropylene engineered to tolerate engine-bay heat, road vibration and contact with antifreeze, so it resists cracking and deformation that can cause leaks. The translucent material also makes visual level checks quick and simple.

• High-temperature resistant PP plastic construction
• Designed to withstand vibration and thermal cycling
• Translucent body for easy coolant level inspection
• OE-grade durability for long-term service life

How does the expansion tank operate within the cooling system?

The expansion tank collects excess coolant as the engine and coolant heat up and expands; when the system cools, coolant is drawn back into the radiator to maintain proper fluid levels. This process helps avoid pressurization damage and supports consistent engine temperatures.

• Stores excess antifreeze during thermal expansion
• Returns coolant to the radiator as the system cools
• Prevents over-pressurization and related component wear
• Enables quick visual checks without opening the radiator cap

What do I get after purchase and how is support handled?

SYKRSS ships a brand-new coolant reservoir built to OE standards and backs it with a 12-month warranty and responsive customer service. If you encounter fitment or performance concerns, the team aims to respond within 48 hours to troubleshoot or provide warranty assistance.

• 100% new replacement part meeting OE specifications
• 12-month warranty included
• Customer support response typically within 48 hours
• Installation guidance available if needed

Who is this for: Vehicle owners or technicians who need a reliable, OE-equivalent coolant expansion tank for 2015–2019 Ford Transit 150/250/350 vans. It’s suitable for fleet maintenance, independent repair shops and do-it-yourselfers who want a direct-fit, durable replacement that restores coolant visibility and system integrity without expensive dealer parts.