Keystone GM3010538 OEM Replacement Radiator 4/6-Cylinder 2.4L/3.0L/3.6L

The Keystone GM3010538 is an OEM-replacement radiator engineered for Buick LaCrosse, Buick Regal, Chevrolet Malibu, and Chevrolet Impala applications equipped with 4-cylinder and 6-cylinder engines. This unit directly replaces GM OEM part number 23453634 (also cross-referenced as DPI #13146 / CU13146) and is designed for a direct bolt-on fit with no modification required.

The radiator features an aluminum core with plastic tanks in a single-row configuration, delivering effective heat dissipation to maintain optimal engine operating temperatures. It includes an integrated automatic transmission oil cooler, making it suitable for automatic transmission-equipped vehicles. Inlet and outlet port diameter measures 1.38 inches.

Key Features:

• Direct OEM replacement — Partslink # GM3010538, OEM # 23453634
• Aluminum core construction for efficient heat transfer and corrosion resistance
• Plastic tank design matching original equipment specifications
• Single-row core configuration
• Integrated automatic transmission oil cooler
• 1.38-inch inlet and outlet ports
• Direct bolt-on fitment — no drilling or modification required
• Meets or exceeds OEM performance standards

Compatible with 4-cylinder (2.4L) and 6-cylinder (3.0L/3.6L) engine applications across multiple model years, including Malibu Eco models and Impala 2.4L/3.6L variants. Cross-reference part numbers: 23453634, 13146, CU13146, 13300193, 22809025.