Koyorad A13951 Radiator

OE-Equivalent Radiator Replacement

The Koyorad A13951 radiator is an OE-equivalent replacement built for BMW cooling system service. It is engineered with an aluminum core and plastic tanks to match the needs of modern radiator replacement while maintaining the correct inlet and outlet sizing.

Fits 2020-2023 BMW X3, N/A. Fits 2020-2021 BMW X4, N/A. This part cross-references Bosch (e.g., 13951) for the same application.

Key Features

• Aluminum core construction for efficient heat transfer.
• Single-row core design for a direct replacement format.
• Plastic tank construction for OE-style radiator packaging.
• 1.52 in. inlet and outlet diameters for proper hose connection sizing.
• Built by Koyorad, a brand focused on OE-equivalent cooling replacements.

Detailed Description

Koyorad A13951 is a radiator replacement for BMW cooling systems that require an OE-style fit and function. The core measures 24.21 in. high, 23.81 in. wide, and 0.98 in. thick, with aluminum core material and plastic tanks to support standard radiator service requirements. For buyers searching for a BMW X3 radiator or BMW X4 radiator, this part number A13951 provides a direct replacement option with the specified inlet and outlet dimensions.

Koyorad Radiator products are positioned as OE-equivalent replacements, and this radiator follows that approach with a practical construction suited to routine cooling system repair. The A13951 part number is also useful when cross-checking catalog listings and interchange references.

What It Is Used For

• Replacing a leaking or cracked radiator.
• Restoring coolant flow through the cooling system.
• Addressing overheating caused by radiator core damage.
• Correcting hose connection issues tied to worn radiator necks.
• Servicing a damaged primary radiator assembly.

Installation Notes and Tips

Verify inlet and outlet diameter, core dimensions, and fitment before installation. Confirm the vehicle application against the listed BMW X3 and BMW X4 coverage, and inspect hoses, clamps, and coolant condition during replacement. Use the part number A13951 to confirm catalog match before ordering.

Quality Assurance

Koyorad states that its radiators are OE-equivalent replacements and are backed by the company’s manufacturing experience in cooling components. The A13951 radiator is built to support first-time replacement needs with catalog-matched specifications.