Keystone GM3010428 OEM Replacement Radiator with Transmission Cooler

The Keystone GM3010428 is a direct-fit OEM replacement radiator engineered to restore proper engine cooling system performance. This crossflow radiator features a plastic tank / aluminum core construction and includes an integrated automatic transmission cooler, matching the original factory configuration. It directly replaces GM OEM part number 89018542 (also cross-referenced as 88957431).

Key Features:

• Direct bolt-on replacement — no modifications required for proper fitment
• Aluminum core with plastic end tanks for efficient heat dissipation
• Integrated automatic transmission oil cooler — maintains factory cooling architecture
• Core dimensions: 30.57 in. x 14.88 in. x 0.63 in. (5/8 in. thick)
• Inlet/outlet diameter: 1.31 in. — top-left inlet, bottom-right outlet
• Single-row crossflow core design consistent with OEM specifications
• Factory finish for a clean, stock appearance

OEM & Cross-Reference Part Numbers:

• Partslink: GM3010428
• GM OEM: 89018542, 88957431
• DPI: 2343

This radiator is sold individually and is designed to meet or exceed original equipment specifications, ensuring reliable engine temperature management and long service life.