Dayco 71891 Radiator Coolant Hose - Upper

Dayco Curved Radiator Hose 71891

Dayco 71891 is a curved radiator coolant hose for upper cooling-system routing on select Honda, Nissan, and Toyota applications. Built from EPDM rubber with a protective sleeve, it is made for direct replacement use where the original hose follows a curved path and must maintain a secure coolant seal.

The Dayco Curved Radiator Hose line focuses on OE-style hose geometry and material selection for common radiator and heater-cooling service needs. This hose follows the original routing profile for applications such as the Honda CR-Z, Nissan Sentra, Toyota Paseo, and Toyota Tercel.

Key Features

• EPDM construction for coolant-system service
• Black finish for a factory-style appearance
• Single I.D. hose design
• 1 1/16 in. inside diameter at both ends
• Protective sleeve included for added abrasion resistance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Upper curved radiator hose routing for listed applications

Detailed Description

Dayco 71891 is a radiator coolant hose engineered for upper hose applications where a curved shape is required to match the factory cooling-system layout. The EPDM rubber construction is suited for coolant exposure and everyday engine-bay temperatures, while the protective sleeve adds an extra layer where the hose may contact nearby components. This part number is used in direct replacement service for vehicles including the 2011-2016 Honda CR-Z, 2004-2006 Nissan Sentra, 1996-1999 Toyota Paseo, and 1995-1999 Toyota Tercel.

This part cross-references Gates 22213 for the same application.

What It Helps Address

• Coolant leaks from a cracked or aged upper radiator hose
• Softening, swelling, or hardening of the original hose material
• Improper hose routing caused by a damaged curved hose
• Loss of coolant seal at the hose ends
• Visible wear where the hose needs abrasion protection

Installation Notes and Tips

Verify end diameters, hose routing, and upper-hose position before installation. Inspect hose clamps, mating necks, and nearby brackets for corrosion or damage before transferring the new hose into place. Confirm the hose follows the original curved path without twisting so the coolant passage remains unobstructed.

Compatible With 2011-2016 Honda CR-Z, upper; 2004-2006 Nissan Sentra, upper; 1996-1999 Toyota Paseo, upper; and 1995-1999 Toyota Tercel, upper.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for cooling-system service. The EPDM material and OE-style curved profile support consistent fitment on the listed applications, including Honda CR-Z, Nissan Sentra, Toyota Paseo, and Toyota Tercel models.