Dayco 72272 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose 72272

Dayco 72272 is a curved upper radiator coolant hose for select GM and Saab applications. Built from EPDM rubber with a protective sleeve, it is shaped for the upper cooling circuit and sized with a 1 9/32 in. inside diameter at both ends for a direct replacement-style fit.

Key Features

• EPDM construction for coolant-system service
• Black curved radiator hose design for upper hose routing
• 1 9/32 in. inside diameter at both ends
• Protective sleeve included; heat shield not included
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Single I.D. hose configuration

Product Details

Dayco Curved Radiator Hose 72272 is a radiator coolant hose engineered for upper hose applications where a formed bend is required to follow the factory cooling-system path. The EPDM rubber construction is suited for coolant exposure, while the protective sleeve adds an extra layer of abrasion resistance in routed areas. This hose is a direct-fit style replacement for vehicles such as the 2004-2007 Buick Rainier, 2005-2007 Saab 9-7x, and 2006 Chevrolet Trailblazer. This part cross-references Gates 22753 for the same application.

What It Helps Fix

• Cracked or split upper radiator hose
• Coolant leaks at the hose body
• Softening or swelling from heat and age
• Restricted coolant flow from hose deterioration
• Incorrect routing on a worn or collapsed curved hose

Installation Notes

Verify end diameters, hose routing, and upper-hose position before installation. Inspect hose clamps, radiator necks, and engine fittings for wear or corrosion, and replace any damaged sealing surfaces. Confirm clearance around the protective sleeve so the hose does not rub against adjacent components after installation.

Quality Assurance

Dayco 72272 is built to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for radiator hose service. It is listed for fitment on 2003-2006 Chevrolet Trailblazer EXT, 2003-2006 GMC Envoy XL, 2003-2006 Isuzu Ascender, 2004-2005 GMC Envoy XUV, 2005-2006 GMC Envoy, 2004-2007 Buick Rainier, 2005-2007 Saab 9-7x, and 2006 Chevrolet Trailblazer.