GDUKOP engine coolant reservoir tank with cap — direct-fit for Chrysler 300 / Dodge Challenger Charger 2011–2023, heat-resistant

If your Chrysler 300 or Dodge Challenger/Charger from model years 2011–2023 has a cracked, leaking, or discolored coolant reservoir, the GDUKOP 603-380 tank with cap is built to match the factory fit and restore reliable coolant management. This replacement tank is molded from heat-resistant plastic and supplied as a direct-fit unit that aligns with OE mounting points, hose connections, and sensor ports so you don’t need to modify mounting brackets or hoses.

Will this reservoir fit my 2011–2023 Chrysler 300 or Dodge Challenger/Charger?

Yes — the GDUKOP 603-380 is engineered to be compatible with Chrysler 300 and Dodge Challenger/Charger models across the 2011–2023 range that used the OE part family listed below. Confirm fitment by comparing the OE part number on your existing tank or checking chassis-specific parts guides.

• Replaces OE numbers: 603-380, 4596198, 5086226AA, and the 55111260AB/AC/AD/AE/AF series
• Also suitable where OE 55116897AA or similar numbers were used
• Designed to match factory hose and sensor locations for these models

How durable and heat-resistant is this replacement tank?

This reservoir is made from reinforced, high-temperature plastic formulated to resist cracking and deformation under normal engine- bay conditions. It’s produced to withstand repeated heat cycles and the corrosive environment of coolant exposure without brittle failure.

• Heat-resistant material reduces risk of swelling or cracking
• Close-molded seams limit leak paths and maintain pressure tolerance
• Corrosion-resistant plastic holds coolant chemistry without degrading

How easy is installation and what do I need to do the swap?

The GDUKOP tank is a direct replacement designed to install with the factory mounting points and hose fittings — no cutting or custom fabrication required. Basic hand tools and a short bleed of the cooling system to remove air are typically all that’s needed.

• Simple bolt-on installation using existing brackets and fasteners
• Standard hose clamps re-used or replaced as needed during swap
• Refill with manufacturer-specified coolant and check for proper level/sensor operation

What maintenance benefits will I notice after replacing the tank?

Replacing a damaged or leaking reservoir helps the cooling system maintain stable coolant levels and reduces the chance of overheating due to loss of fluid. Restoring a properly sealed cap and intact tank also keeps pressure and reservoir venting working as intended.

• Stops visible leaks and prevents coolant loss onto engine components
• Ensures accurate coolant level readings for overflow and return cycles
• Supports consistent engine temperature control under normal driving loads

Who is this for: The GDUKOP 603-380 coolant reservoir tank with cap is intended for owners, mechanics, and restoration projects of Chrysler 300 and Dodge Challenger/Charger vehicles (2011–2023) that need a direct, OEM-compatible replacement. Choose this part if you require precise fitment, durable heat-resistant construction, and a straightforward swap that uses existing mounting hardware and hoses.