HomeHVAC > Hoses and PipesDayco 86123 HVAC Heater Hose
Part #: 86123

Dayco 86123 HVAC Heater Hose

Small I.D. Heater Hose, Heater To Connector
51 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Small I.D. Heater Hose, Heater To Connector
Fitment: Toyota, Honda, Buick, Chevrolet, Pontiac, and GMC, Camry, Venza, CR-V, Century, Impala, Monte Carlo, Grand Prix, Lumina, Accord, G20, G30, G2500, and G3500
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Overview of Dayco Small I.D. Heater Hose 86123

The Dayco Small I.D. Heater Hose 86123 is designed to provide reliable performance in HVAC systems for a range of vehicles including Buick, Chevrolet, Honda, Pontiac, and Toyota models. Engineered with durable EPDM material, this black single inside diameter hose ensures consistent heat transfer and fluid flow within your vehicle's heating system.

  • Constructed from high-quality EPDM for heat and chemical resistance
  • Black color for standard OEM appearance
  • 5/8 inch inside diameter on both ends for uniform fit
  • Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
  • Single inside diameter hose type for straightforward installation
  • Trunk height of 16 inches suitable for various HVAC routing needs

Detailed Product Description

The Dayco Small I.D. Heater Hose 86123 is part of the Small I.D. Heater Hose product line, which focuses on delivering precise fit and durability for automotive heating systems. This hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids, making it suitable for long-term use in HVAC applications. Both ends of the hose have a 5/8 inch inside diameter, ensuring compatibility with OEM fittings and consistent fluid flow. The hose complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive heater hose applications. Its black color matches typical OEM specifications, maintaining the original equipment look under the hood.

Compatible Vehicles and Applications

This heater hose is compatible with a variety of popular vehicle makes and models, including Buick Century, Chevrolet Impala, Lumina, Monte Carlo, Honda Accord, CR-V, Pontiac Grand Prix, G20, G30, and Toyota Camry and Venza. It is designed to replace worn or damaged heater hoses in these vehicles, ensuring proper heating system function and preventing coolant leaks.

  • Replaces cracked or leaking heater hoses
  • Prevents coolant loss and overheating issues
  • Restores proper heater core fluid flow
  • Eliminates hose swelling or softening due to age
  • Maintains HVAC system efficiency and cabin comfort

Installation Notes and Tips

When installing the Dayco Small I.D. Heater Hose 86123, ensure the engine is cool to avoid burns from hot coolant. Verify that the 5/8 inch inside diameter matches your vehicle’s heater hose fittings. Use proper clamps to secure the hose ends and check for leaks after installation. Avoid twisting or kinking the hose during installation to maintain optimal flow and longevity.

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 86123 to meet stringent SAE specifications, ensuring reliable performance in automotive HVAC systems. While specific warranty details are not provided, Dayco products typically adhere to industry standards for quality and durability. For best results, use this hose as a direct replacement part in compatible Buick, Chevrolet, Honda, Pontiac, and Toyota vehicles.

BrandDayco
Part Number86123
PositionSmall I.D. Heater Hose, Heater To Connector
ColorBlack
End 1 Inside Diameter5/8
End 2 Inside Diameter5/8
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R3 Class D-1, SAE J1684 Type EC
Trunk Height16

This part fits 51 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2017ToyotaCamry2.5LL4GASHeater To ConnectorTop Hose; Small I.D. Heater Hose
2016ToyotaCamry2.5LL4GASHeater To ConnectorTop Hose; Small I.D. Heater Hose
2015ToyotaCamry2.5LL4GASHeater To ConnectorTop Hose; Small I.D. Heater Hose
2015ToyotaVenza3.5LV6Heater OutletSmall I.D. Heater Hose
2014HondaCR-VHeater InletSmall I.D. Heater Hose
2014ToyotaCamry2.5LL4GASHeater To ConnectorTop Hose; Small I.D. Heater Hose
2014ToyotaVenza3.5LV6Heater OutletSmall I.D. Heater Hose
2013HondaCR-VHeater InletSmall I.D. Heater Hose
2013ToyotaCamry2.5LL4GASHeater To ConnectorTop Hose; Small I.D. Heater Hose
2013ToyotaVenza3.5LV6Heater OutletSmall I.D. Heater Hose
2012HondaCR-VHeater InletSmall I.D. Heater Hose
2012ToyotaCamry2.5LL4GASHeater To ConnectorTop Hose; Small I.D. Heater Hose
2012ToyotaVenza3.5LV6Heater OutletSmall I.D. Heater Hose
2011ToyotaVenza3.5LV6Heater OutletSmall I.D. Heater Hose
2010ToyotaVenza3.5LV6Heater OutletSmall I.D. Heater Hose
2009ToyotaVenza3.5LV6Heater OutletSmall I.D. Heater Hose
2005BuickCenturyHeater To Pipe (Upper)Small I.D. Heater Hose
2004BuickCenturyHeater To Pipe (Upper)Small I.D. Heater Hose
2003BuickCenturyHeater To Pipe (Upper)Small I.D. Heater Hose
2003ChevroletImpala3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2003ChevroletMonte Carlo3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2003PontiacGrand Prix3.1LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2002BuickCenturyHeater To Pipe (Upper)Small I.D. Heater Hose
2002ChevroletImpala3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2002ChevroletMonte Carlo3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2002PontiacGrand Prix3.1LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2001BuickCenturyHeater To Pipe (Upper)Small I.D. Heater Hose
2001ChevroletImpala3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2001ChevroletLuminaHeater To Pipe (Upper)Small I.D. Heater Hose
2001ChevroletMonte Carlo3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2001PontiacGrand Prix3.1LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2000BuickCenturyHeater To Pipe (Upper)Small I.D. Heater Hose
2000ChevroletImpala3.8LV6Heater OutletTop Hose; Small I.D. Heater Hose
2000ChevroletImpala3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2000ChevroletLuminaHeater To Pipe (Upper)Small I.D. Heater Hose
2000ChevroletMonte Carlo3.4LV6Heater To Pipe (Upper)Small I.D. Heater Hose
2000PontiacGrand Prix3.1LV6Heater To Pipe (Upper)Small I.D. Heater Hose
1997HondaAccord2.2LL4Heater OutletSmall I.D. Heater Hose
1996HondaAccord2.2LL4Heater OutletSmall I.D. Heater Hose
1995HondaAccord2.2LL4Heater OutletSmall I.D. Heater Hose
1994HondaAccordHeater OutletSmall I.D. Heater Hose
1993ChevroletG206.2LV8Heater To Valvew/A.C., w/o Aux. Heater; Small I.D. Heater Hose
1993ChevroletG306.2LV8Heater To Valvew/A.C., w/o Aux. Heater; Small I.D. Heater Hose
1993GMCG25006.2LV8Heater To Valvew/A.C., w/o Aux. Heater; Small I.D. Heater Hose
1993GMCG35006.2LV8Heater To Valvew/A.C., w/o Aux. Heater; Small I.D. Heater Hose
1993HondaAccordHeater To PipeSmall I.D. Heater Hose
1993HondaAccordEXHeater OutletSmall I.D. Heater Hose
1993HondaAccordSEHeater OutletSmall I.D. Heater Hose
1992HondaAccordHeater To PipeSmall I.D. Heater Hose
1991HondaAccordHeater To PipeSmall I.D. Heater Hose
1990HondaAccordHeater To PipeSmall I.D. Heater Hose

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

16229M16522M18065L18436L18471L

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.