Dayco
Curved Radiator Hose

Dayco 72079 HVAC Heater Hose - Pipe To Thermostat

Brand Dayco 72079
Position Pipe To Thermostat
Color Black
End 1 Inside Diameter 5/8
End 2 Inside Diameter 25/32
Hose Type Dual I.D. Hose
Material EPDM
SAE Specification SAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height 10 1/2
Product line Curved Radiator Hose
Fits Ford · 5 vehicles

EPDM construction. Resists heat and coolant exposure for dependable hose performance.

Dual I.D. hose. Provides two inside diameters in one hose for versatile routing.

SAE J20R4 Class D-1. Built to meet recognized hose performance specifications.

Cross-references ACDelco 14366S, CARQUEST 19276 and Duralast C72079 for the same application. See all 10.

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Dayco Curved Radiator Hose for Ford Focus

The Dayco 72079 is a curved radiator hose built for the cooling system connection at the pipe to thermostat on select 2000-2004 Ford Focus models. Made from EPDM rubber and formed as a dual I.D. hose, it provides the correct routing and diameter transition for this application.

For Ford Focus cooling system service, this Dayco Curved Radiator Hose 72079 matches the specified fitment and SAE hose standards used in demanding engine bay conditions.

Key Features

  • EPDM construction for coolant hose service
  • Black finish for a factory-style appearance
  • Dual I.D. hose design with 5/8 in. end 1 inside diameter and 25/32 in. end 2 inside diameter
  • Curved radiator hose profile for pipe-to-thermostat routing
  • Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
  • Dayco part number 72079 for direct identification

Detailed Description

Dayco Curved Radiator Hose 72079 is a molded EPDM HVAC heater hose/radiator hose application for the Ford Focus cooling circuit. The curved shape supports the pipe to thermostat connection used on 2000-2004 Ford Focus models, helping maintain the proper hose path in a compact engine bay. This hose line is part of Dayco’s Curved Radiator Hose range, which focuses on formed replacement hoses with application-specific bends and diameter transitions.

This part cross-references Gates 19276 for the same application. It also aligns with Ford OE references including 1M51-8A506-AA and 2S4Z-8555-AA.

What It Helps Address

  • Coolant leaks at a worn or cracked hose
  • Improper hose routing at the thermostat connection
  • Softening, swelling, or hardening of an aging rubber hose
  • Heat-related deterioration in the cooling system line
  • Fitment issues caused by an incorrect hose diameter or bend

Installation Notes and Tips

Verify the pipe-to-thermostat routing before installation and compare the hose end diameters to the removed part. Inspect adjoining clamps, thermostat neck, and pipe surfaces for corrosion or damage before installing the new hose. Confirm the hose is seated fully and routed without twist or kinks so the Ford Focus cooling system can maintain proper flow.

Quality Assurance

This Dayco hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting standardized coolant hose performance for the specified application.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2004FordFocus2.0LL4Pipe To ThermostatCurved Radiator Hose
2003FordFocus2.0LL4Pipe To ThermostatCurved Radiator Hose
2002FordFocusPipe To ThermostatCurved Radiator Hose
2001FordFocusPipe To ThermostatCurved Radiator Hose
2000FordFocusPipe To ThermostatCurved Radiator Hose
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 14366SCARQUEST — 19276Duralast — C72079Ford — 1M51-8A506-AAFord — 2S4Z-8555-AAFord — 98AB-8A506-CBFord — YS4Z-8555-CAGates — 19276Goodyear — 63177NAPA — 11276