Keystone HO3010164 OEM Replacement Radiator for Honda Civic and CRX 1.5L 1.6L Automatic Transmission

The Keystone HO3010164 is a direct-fit OEM replacement radiator engineered for 1988–1991 Honda Civic and CRX models equipped with 1.5L or 1.6L four-cylinder engines and automatic transmissions. Built to restore the vehicle's cooling system to factory performance levels, this radiator is a bolt-on replacement that requires no cutting or modification for installation.

Key Features:

• Direct OEM Replacement: Partslink number HO3010164; replaces Honda OEM part numbers 19010-PM3-901 (19010PM3901) and 19010-PM3-305 (19010PM3305)
• Construction: Plastic tanks with a copper/aluminum core for efficient heat transfer and durability
• Single-Row Core: 1-row design matched to OEM specifications
• Core Dimensions: Approximately 12-7/8" H × 26-5/16" W × 1-1/4" thick
• Inlet/Outlet Diameter: 1-1/8" (top right inlet, bottom right outlet)
• Flow Type: Down-flow design
• Integrated Transmission Oil Cooler (TOC): Concentric-style internal automatic transmission cooler included
• No Engine Oil Cooler: Engine oil cooler not included or required for this application
• Radiator Cap: Not included

OEM & Cross-Reference Part Numbers:

• Partslink: HO3010164
• Honda OEM: 19010PM3901, 19010-PM3-901, 19010PM3305, 19010-PM3-305
• Spectra Premium: CU10, CU886
• DPI / APDI: 886, 8010886

This replacement radiator is designed to maintain proper engine operating temperatures, prevent overheating, and support the longevity of both the engine and automatic transmission's internal oil cooler circuit. It is sold individually as a complete radiator assembly.