Dayco 72263 Radiator Coolant Hose - Lower

Dayco Curved Radiator Hose for Lower Cooling Service

The Dayco 72263 curved radiator hose is a lower coolant hose built for direct replacement in select Chevrolet Colorado, GMC Canyon, Isuzu i-290, and Isuzu i-280 applications. Made from EPDM rubber and finished in black, it uses a single I.D. hose design with 1 1/2-inch inside diameters at both ends for a consistent cooling-system connection.

Dayco’s Curved Radiator Hose line focuses on application-specific hose routing and OE-style fitment for cooling system service. This hose follows the lower hose path used on the listed vehicles and is built to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications.

Key Features

• Part number 72263 for cooling system replacement
• EPDM construction for radiator hose service
• Black finish with curved hose routing
• 1 1/2-inch inside diameter at both ends
• Single I.D. hose design
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Lower radiator hose application

Vehicle Fitment

• Fits 2004-2012 Chevrolet Colorado, lower
• Fits 2004-2012 GMC Canyon, lower
• Fits 2007-2008 Isuzu i-290, lower
• Fits 2006 Isuzu i-280, lower

What This Hose Helps Address

• Cracked or split lower radiator hose sections
• Coolant leaks at the lower hose connection
• Softening, swelling, or deterioration from heat and age
• Restricted coolant flow caused by hose collapse
• Service replacement for a worn Chevrolet Colorado or GMC Canyon lower hose

Installation Notes and Tips

Verify hose routing and end diameters before installation, especially on 2004-2012 Chevrolet Colorado and 2004-2012 GMC Canyon lower hose applications. Inspect clamps, necks, and adjoining cooling-system components for wear or corrosion before installing Dayco 72263. Confirm the hose is seated fully on both 1 1/2-inch connections and check the system for leaks after refill and bleed procedures.

Quality Assurance

This Dayco radiator coolant hose is built to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for cooling-system hose service. Cross-reference part numbers for the same application include Gates 22908 and NAPA 9543.