Dayco 72516 Engine Coolant Bypass Hose - Engine To Water Pump, Water Pump or Water Pump To Intake Manifold

Curved Coolant Hose for OE-Style Fit

Dayco 72516 is a curved radiator hose built for coolant bypass and water pump routing in select Ford, Mazda, Mercury, and Lincoln applications. Made from EPDM rubber with a black finish, it follows the original hose path for a direct replacement on vehicles such as the Ford Fusion, Mazda 6, and Mercury Milan.

The Dayco Curved Radiator Hose line focuses on molded hose geometry and OE-style dimensions for accurate routing in engine cooling systems. Part number 72516 uses a single I.D. hose design with 1 1/2-inch inside diameter ends and a 6 1/2-inch trunk height to match the specified coolant path.

Key Features

• EPDM construction for coolant system service
• Black molded hose with curved routing profile
• Single I.D. hose design
• 1 1/2-inch inside diameter at both ends
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Direct-fit replacement for select water pump and bypass hose applications

Detailed Description

Dayco 72516 is an engine coolant bypass hose and curved radiator hose designed for specific cooling-system routing points, including water pump, water pump to intake manifold, and engine to water pump locations. Its EPDM material is suited for coolant exposure, while the molded shape helps maintain the factory hose path in applications such as 2006-2009 Ford Fusion, 2004-2008 Mazda 6, and 2005-2008 Mercury Mariner. If you are replacing a worn hose on a Ford Fusion, Mazda 6, or Mercury Milan, this part number 72516 provides the correct curved configuration for the listed vehicles.

This part cross-references Gates 22838 for the same application.

What It Helps Address

• Coolant leaks from cracked or aged hose rubber
• Improper hose routing after a failed original hose
• Softening, swelling, or deterioration from heat and coolant exposure
• Loss of coolant flow at the water pump or bypass circuit
• Service replacement for damaged molded cooling hoses

Installation Notes and Tips

Verify the vehicle year, make, model, and hose position before installation. Confirm the hose path matches the listed application, including water pump, water pump to intake manifold, or engine to water pump routing. Inspect adjoining fittings, clamps, and coolant passages for wear or contamination before installing the new hose. After installation, refill and bleed the cooling system according to the vehicle service procedure.

Quality Assurance

Dayco 72516 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for coolant hose service. The molded EPDM construction and OE-style dimensions support consistent fitment in the specified Ford, Mazda, Mercury, and Lincoln applications.