Rein EPT0257 Engine Coolant Reservoir

Engine Coolant Reservoir for Volvo Recharge Models

The Rein EPT0257 engine coolant reservoir is an OE-quality expansion tank built for select Volvo XC40, C40, C40 Recharge, XC40 Recharge, EC40, and EX40 applications. It uses virgin plastic construction to help resist cracking from repeated heat cycles and maintain long-term durability.

With a natural plastic body and twist-on cap design, this reservoir is made to match the original fit and function of the factory cooling system. Rein EPT0257 is a direct replacement choice for drivers servicing a Volvo XC40 coolant reservoir or Volvo C40 Recharge expansion tank.

Key Features

• OE-quality engine coolant reservoir / expansion tank
• Virgin plastic construction with no regrind material
• Natural color plastic housing
• Twist-on cap type
• Cap not included
• Mounting hardware not included
• Mounting brackets not included
• Part number: EPT0257

Product Details

Rein Automotive EPT0257 is engineered as a replacement coolant expansion tank for Volvo cooling systems that require a reservoir without a cap. The plastic construction is selected to match OE material expectations and support consistent performance in daily driving and temperature cycling. This part cross-references Volvo 31439768 for the same application.

Compatible With select Volvo XC40, C40, C40 Recharge, XC40 Recharge, EC40, and EX40 models, this reservoir is a practical service part when the original tank shows signs of age, cracking, or coolant loss. The EPT0257 part number is also useful when searching for a Volvo coolant reservoir replacement by OE-style reference.

Common Reasons for Replacement

• Cracked or brittle coolant reservoir housing
• Coolant seepage around the expansion tank
• Loss of coolant level from a damaged reservoir
• Heat-cycle wear on the original plastic tank
• Service replacement for a reservoir missing its cap

Installation Notes and Tips

• Verify vehicle VIN and build details before ordering, especially for 2020-2025 Volvo applications with VIN cutoffs.
• This reservoir is listed without a cap; confirm the correct cap is sourced separately if needed.
• Inspect hoses, seals, and surrounding cooling components during replacement.
• Flush and refill coolant according to Volvo service procedures after installation.

Quality Assurance

Rein Automotive positions this expansion tank as an OE-quality replacement built from virgin plastic to help reduce cracking from heat cycles and support long service life. The EPT0257 is made to follow original equipment fit and material expectations for the listed Volvo applications.

• Fits 2025 Volvo EC40, N/A, to VIN 167809, w/o Cap, Belgium, Malaysia Built
• Fits 2025 Volvo EX40, N/A, to VIN 557396, w/o Cap, Belgium, Malaysia Built
• Fits 2023-2024 Volvo C40 Recharge, N/A, w/Variant Code XE09, w/o Cap
• Fits 2023-2024 Volvo XC40 Recharge, N/A, w/Variant Code XE09, w/o Cap
• Fits 2023 Volvo C40, N/A, w/Variant Code XE09, w/o Cap
• Fits 2022 Volvo C40, N/A, w/o Cap
• Fits 2022 Volvo C40 Recharge, N/A, w/o Cap
• Fits 2020-2022 Volvo XC40, N/A, to VIN 170730, w/o Cap, China Built
• Fits 2021-2022 Volvo XC40 Recharge, N/A, w/o Cap
• Fits 2019 Volvo XC40, N/A, w/o Cap