Dayco 71536 HVAC Heater Hose - Heater To Valve

Dayco Curved Heater Hose for Honda, Isuzu, and Suzuki

Dayco Part Number 71536 is a curved HVAC heater hose built from EPDM rubber for dependable coolant transfer in select Honda, Isuzu, and Suzuki applications. Its single I.D. hose design uses a 9/16 in. inside diameter at both ends and follows the curved routing needed for specific engine bay layouts.

Key Features

• EPDM construction for heater and coolant hose service
• Black finish for a clean OE-style appearance
• 9/16 in. inside diameter at both ends
• Single I.D. hose design for curved routing
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco Curved Radiator Hose line for application-specific hose routing

Product Details

This Dayco 71536 hose is part of the Curved Radiator Hose line and is shaped for vehicles that require a formed hose path rather than a straight universal section. It is listed as an HVAC heater hose and is used in applications such as the 1986-1993 Suzuki Samurai heater to valve routing, along with select Isuzu Pickup, Rodeo, Amigo, Trooper, and Honda Passport applications. For buyers searching for a Dayco 71536 heater hose or a curved radiator hose for Honda Passport and Isuzu Pickup fitment, this part provides the specified hose dimensions and material construction for those vehicles.

This part cross-references ACDelco 14061S and Gates 18418 for the same application.

What It Helps Address

• Cracked or aged heater hose rubber
• Coolant seepage at a curved hose section
• Restricted coolant flow from hose collapse or deterioration
• Incorrect hose routing on select Honda Passport, Isuzu Pickup, and Suzuki Samurai applications
• Replacement needs for a formed heater hose with matching end diameters

Installation Notes and Tips

• Verify the hose path and end diameters before installation.
• Match the vehicle year, make, model, and position exactly to the fitment listing.
• Inspect adjoining fittings, clamps, and coolant passages for wear or corrosion before installing the new hose.
• Confirm the hose is routed without kinks or twist to maintain proper coolant circulation.

Quality Assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent material and performance standards for heater hose service.