Dayco 72318 Radiator Coolant Hose - Lower or Upper - Pipe To Radiator
OE Quality 60-Day Returns
Dayco
 Curved Radiator Hose

Dayco 72318 Radiator Coolant Hose - Lower or Upper - Pipe To Radiator

Brand Dayco 72318
Position Lower
Color Black
End 1 Inside Diameter 1 1/4
End 2 Inside Diameter 1 11/32
Hose Type Dual I.D. Hose
Material EPDM
SAE Specification SAE J20R4 Class D-1, SAE J1684 Type EC
Trunk Height 11
Product line Curved Radiator Hose
Fits Mercury, Mazda, and Volkswagen · 23 vehicles

OE-style replacement. Curved radiator hose for straightforward cooling-system service.

EPDM construction. Resists heat and coolant exposure for dependable flexibility.

Dual I.D. hose. Provides two inside diameters in one coolant hose design.

Cross-references ACDelco 20354S, ACDelco 20469S and CARQUEST 23177 for the same application. See all 13.

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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Radiator Coolant Hose options

Dayco 72318 Curved Radiator Hose Overview

Dayco 72318 is a curved radiator coolant hose built for cooling-system service where a formed EPDM hose is required. It features a dual I.D. design with 1 1/4 in. and 1 11/32 in. inside diameters, making it a direct replacement option for select Volkswagen, Mazda, Mercury, and Ford applications.

The Dayco Curved Radiator Hose line is engineered for vehicle-specific routing and proper coolant flow in upper and lower hose locations. This hose is black EPDM construction and meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for coolant hose applications.

Key Features

  • Part number: 72318
  • Curved radiator coolant hose for cooling-system repair
  • EPDM construction for coolant hose service
  • Dual I.D. hose with 1 1/4 in. and 1 11/32 in. inside diameters
  • Black finish
  • SAE J20R4 Class D-1 and SAE J1684 Type EC specification
  • Fits upper and lower hose positions depending on application

Fitment Details

  • Fits 2008-2009 Mercury Mariner, lower.
  • Fits 2005-2006 Mazda Tribute, lower.
  • Fits 2005-2006 Volkswagen Jetta, upper - pipe to radiator.
  • Fits 1999-2005 Volkswagen Golf, upper - pipe to radiator; without Quick Connect.
  • Fits 1999-2004 Volkswagen Jetta, upper - pipe to radiator; without Quick Connect.
  • Fits 1999 Volkswagen Golf, lower; vehicles without air conditioning.
  • Fits 1999 Volkswagen Jetta, lower; vehicles without air conditioning.
  • Fits 1993 Volkswagen Jetta, lower; vehicles without air conditioning.
  • Fits 1995 Volkswagen Cabrio, lower; vehicles without air conditioning.

What This Hose Helps Address

  • Coolant leaks from a cracked, swollen, or aged radiator hose
  • Restricted coolant flow caused by hose collapse or internal deterioration
  • Improper hose routing on curved upper or lower radiator connections
  • Service replacement for worn Volkswagen Jetta, Golf, and Cabrio cooling hoses
  • Replacement for select Mercury Mariner and Mazda Tribute lower radiator hose applications

Installation Notes

Verify hose routing, end diameters, and position before installation. This hose is listed for upper - pipe to radiator and lower applications depending on vehicle configuration, including some Volkswagen models without Quick Connect and some vehicles without air conditioning. Inspect adjoining pipes, clamps, and coolant condition before completing the repair.

Quality Assurance

Dayco manufactures this hose to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for coolant hose applications. This part cross-references Ford (e.g., 5L8Z-8286-AA, 5L84-8B273-AE) for the same application.

Related reading

This part fits 23 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
2009MercuryMariner—2.5LL4ELECTRIC/GASLowerCurved Radiator Hose
2008MercuryMariner—2.3LL4ELECTRIC/GASLowerCurved Radiator Hose
2006MazdaTribute—2.3LL4—LowerCurved Radiator Hose
2006VolkswagenJettaManual1.9LL4—Upper - Pipe To RadiatorCurved Radiator Hose
2005MazdaTribute—2.3LL4—LowerCurved Radiator Hose
2005VolkswagenGolfManual1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2005VolkswagenJettaManual1.9LL4—Upper - Pipe To RadiatorCurved Radiator Hose
2004VolkswagenGolfManual1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2004VolkswagenJettaManual1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2003VolkswagenGolfManual1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2003VolkswagenJettaManual1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2002VolkswagenGolfManual1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2002VolkswagenJettaManual1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2001VolkswagenGolf—1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2001VolkswagenJetta—1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2000VolkswagenGolf—1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
2000VolkswagenJetta—1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
1999VolkswagenGolf—2.0LL4—LowerFits vehicles without air conditioning.; Curved Radiator Hose
1999VolkswagenGolf—1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
1999VolkswagenJetta—2.0LL4—LowerFits vehicles without air conditioning.; Curved Radiator Hose
1999VolkswagenJetta—1.9LL4—Upper - Pipe To RadiatorFitment note: without Quick Connect; Curved Radiator Hose
1995VolkswagenCabrio————LowerFits vehicles without air conditioning.; Curved Radiator Hose
1993VolkswagenJetta—2.0LL4—LowerFits vehicles without air conditioning.; Curved Radiator Hose
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 20354SACDelco — 20469SCARQUEST — 23177Duralast — D72318Ford — 5L8Z-8286-AAFord — 5L84-8B273-AEFord — 5M6Z-8286-BDGates — 22474Gates — 23177Goodyear — 62527Motorcraft — KM4766NAPA — 9107NAPA — 9838