Keystone HO3010182 OEM Replacement Radiator Honda Civic Si SiR 2.0L

The Keystone HO3010182 is an OEM-style replacement radiator engineered for the 2002–2005 Honda Civic Si and SiR hatchback equipped with the 2.0L L4 (1998cc) engine and manual transmission. Designed as a direct drop-in replacement, this radiator restores proper engine cooling without cutting, drilling, or modification.

Key Features:

• Direct OEM replacement for Partslink number HO3010182
• Replaces OEM part numbers 19010-PRA-003 and 19010-PNF-003
• Single-row core construction with plastic tanks and aluminum core
• Core size: 13¾" H x 25⅞" W x 1" D
• Top and bottom header dimensions: 1⅞" x 26 11/16"
• Inlet and outlet diameter: approximately 1¼"
• Downflow radiator design matching original equipment layout
• 100% leak-tested prior to shipment
• No drilling or modification required for installation

Cross-reference part numbers include: CU2574, 19010PRA003, 19010PNF003, REA41-2574A, and 2219170. This radiator is the correct fitment for EP3-chassis Civic Si and SiR hatchback models with a manual transmission — automatic transmission vehicles require a different unit.