Dayco 71856 Radiator Coolant Hose - Upper, Upper - Pipe To Engine or Upper - Pipe To Radiator

Dayco Curved Radiator Hose for OE-Style Cooling Service

Dayco Part Number 71856 is a curved radiator coolant hose built for upper cooling-system routing on select Chevrolet Tracker, Suzuki Sidekick, Suzuki X-90, Geo Tracker, Pontiac Sunrunner, GMC Tracker, and Suzuki Samurai applications. Made from EPDM rubber and finished in black, it provides a direct-fit replacement for vehicles that need a 1 1/16-inch inside diameter at both ends.

The Dayco Curved Radiator Hose line focuses on application-specific hose shapes and dimensions for cooling-system service. Part Number 71856 follows that approach with a single I.D. hose design and SAE J20R4 Class D-1 / SAE J1684 Type EC specification support for radiator coolant use.

Key Features

• EPDM construction for radiator coolant service
• Black finish for a clean OE-style appearance
• 1 1/16-inch inside diameter at both ends
• Single I.D. hose design for upper cooling-system routing
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Curved hose profile for select upper radiator applications
• Dayco Part Number 71856 for easy identification

Detailed Description

This radiator coolant hose is engineered for upper hose locations on select compact SUV and utility applications, including 1989-1998 Suzuki Sidekick, 1989-1997 Geo Tracker, 1989-1991 Chevrolet Tracker, 1989-1991 GMC Tracker, 1994-1997 Pontiac Sunrunner, 1996-1998 Suzuki X-90, 1998 Chevrolet Tracker, and 1985 Suzuki Samurai. If you are replacing a worn upper radiator hose on a Suzuki Sidekick or Geo Tracker, Dayco 71856 provides the correct curved profile and matching end diameters for the listed applications.

Constructed from EPDM, this hose is intended for coolant transfer in the radiator circuit and is specified without a heat shield or protective sleeve. The 9 1/4-inch trunk height and curved shape help it follow the factory routing used in these vehicles. This part cross-references Gates 21354 for the same application.

Common Problems This Hose Can Address

• Cracked or hardened upper radiator hose material
• Coolant leaks at the hose body or connection points
• Collapsed or softened hose sections under heat and pressure
• Incorrect hose shape after prior repair or replacement
• Cooling-system service needs on select Chevrolet Tracker and Suzuki Sidekick models

Installation Notes and Tips

Verify the hose routing, end diameters, and position before installation. This part is listed for upper, upper - pipe to engine, and upper - pipe to radiator applications depending on vehicle configuration, so match the vehicle year, make, model, and hose path exactly. Inspect the radiator neck, engine outlet, and clamps for wear or corrosion before installing the new hose, and refill the cooling system with the correct coolant after service.

Quality Assurance

Dayco manufactures this hose to meet listed SAE specifications for radiator coolant service. Part Number 71856 is built as an OE-style replacement hose for the specified applications and dimensions.