YzusGomumu Coolant Reservoir for Ram ProMaster 1500/2500/3500 (2014–2021) — OE 603-832 Direct-Fit Tank with Cap, Heat-Resistant

The YzusGomumu Upgrade 603-832 coolant reservoir with cap is a direct-fit replacement tank engineered to restore reliable coolant overflow control for Dodge Ram ProMaster 1500/2500/3500 (2014–2021).

When an aging or cracked coolant overflow tank starts leaking, it can lead to messy coolant loss and an inconsistent cooling system. This YzusGomumu reservoir is molded from heat-resistant material, includes the matching cap, and matches OE references 603-832, 52014880AA and 68097622AA for straightforward swap-in service. The design focuses on durability and reinforced hose connection points so you avoid premature failures common with factory plastic tanks.

Will this reservoir fit my Ram ProMaster?

This reservoir is manufactured to fit Dodge Ram ProMaster 1500, 2500, and 3500 models from 2014 through 2021. Verify compatibility by checking your vehicle’s existing part number against the OE numbers provided. If your current tank lists 603-832, 52014880AA or 68097622AA, this unit is a match.

• Compatible models: Ram ProMaster 1500 / 2500 / 3500 (2014–2021)
• OE references: 603-832, 52014880AA, 68097622AA
• Check your existing tank part number before ordering

How durable and heat-resistant is the YzusGomumu tank?

The tank is made from premium-grade, heat-resistant plastic formulated to resist cracking and age-related degradation. Reinforced mounting points and thicker hose bosses minimize breakage where hoses attach, extending service life compared with many stock units.

• High-temperature polymer construction for long-term use
• Reinforced hose connections reduce the risk of leaks
• Designed to resist UV and chemical exposure from coolant

What’s included and how easy is installation?

Each package contains one coolant overflow reservoir and a matching cap, so no extra drilling or welding is required to install the unit. The cap is pre-sized to the tank opening and the mounting contours follow factory placements for a plug-and-play swap on compatible ProMaster vans.

• Package contents: 1 tank and 1 cap
• Direct-fit design for bolt-on installation — no fabrication
• Preformed hose bosses align with existing hoses for simple hookup

How does this reservoir help maintain engine temperature control?

By securely capturing overflow coolant and returning it to the system as temperatures stabilize, the reservoir helps the cooling system keep consistent fluid levels. A leak-free reservoir prevents air ingress and conserves coolant, supporting reliable engine thermal management under normal operating conditions.

• Captures overflow to maintain coolant volume
• Reduces risk of runaway coolant loss from cracks or broken hose fittings
• Supports proper pressure cycling in the cooling system

Who is this for? The YzusGomumu 603-832 coolant reservoir is intended for ProMaster owners, fleet managers, and mechanics who need a durable, OE-referenced replacement without fabrication. It’s ideal when your current overflow tank shows cracks, warped hose connections, cap-fit issues, or persistent leaks. Before ordering, confirm your vehicle year and part number to ensure fitment.