Dayco 71415 HVAC Heater Hose - Intake Manifold To Thermostat, Intake Manifold To Water Pump or Rear

Dayco Curved Heater Hose for OE-Style Cooling Service

Dayco 71415 is a curved HVAC heater hose built from EPDM for dependable coolant transfer in select Ford, Lincoln, Mercury, Buick, Oldsmobile, and Pontiac applications. This dual I.D. hose uses 5/8 in. and 3/4 in. inside diameters to match the listed routing and connection points.

Compatible With 1988-1990 Ford Taurus intake manifold to thermostat, 1988-1990 Lincoln Continental rear, 1988-1990 Mercury Sable intake manifold to thermostat, 1985-1986 Buick Skyhawk intake manifold to water pump, 1985-1986 Oldsmobile Firenza intake manifold to water pump, and 1986 Pontiac Sunbird intake manifold to water pump.

Key Features

• Dayco Curved Radiator Hose line for application-specific routing
• EPDM construction for heater and coolant hose service
• Dual I.D. hose with 5/8 in. and 3/4 in. end inside diameters
• Black finish for a factory-style appearance
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Part number 71415 for accurate catalog lookup and replacement matching

Detailed Description

Dayco 71415 is a curved heater hose engineered for vehicles that require a dual inside diameter connection between the intake manifold, thermostat, water pump, or rear routing points. The EPDM rubber construction is suited for coolant-carrying HVAC hose service, while the curved shape helps follow the original hose path in tight engine compartments. This part cross-references ACDelco 14087S for the same application.

The Dayco Curved Radiator Hose product line focuses on formed hose geometry and OE-style fitment, making it a practical replacement choice when the original hose follows a specific bend or transitions between different hose sizes. For shoppers searching Dayco 71415, Ford Taurus heater hose, or Mercury Sable curved radiator hose, this part matches the listed vehicle and position details.

What This Hose Helps Address

• Coolant leaks at a worn or cracked heater hose
• Improper routing caused by a collapsed or misshaped hose
• Size mismatch at dual-diameter hose connections
• Heat-related rubber deterioration in the cooling circuit
• Service replacement for a curved hose with OE-style routing

Installation Notes and Tips

Verify the end diameters, routing path, and position before installation. Dayco 71415 is listed for intake manifold to thermostat, rear, and intake manifold to water pump locations depending on vehicle application. Confirm the hose follows the original bend and connection points on the Ford Taurus, Lincoln Continental, Mercury Sable, Buick Skyhawk, Oldsmobile Firenza, or Pontiac Sunbird before final fitment.

Quality Assurance

This hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for heater hose service. The EPDM material and application-specific curved design support consistent replacement quality for the listed vehicles.