HomeHVAC > Hoses and PipesDayco 86801 HVAC Heater Hose
Part #: 86801

Dayco 86801 HVAC Heater Hose

Small I.D. Heater Hose, Throttle Body To Thermostat
⚙️ 70 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$22.16Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Small I.D. Heater Hose, Throttle Body To Thermostat
🚗Fitment: Kia, Toyota, Acura, Nissan, Dodge, Honda, Lexus, Mitsubishi, and Mazda, Amanti, 4Runner, RL, TL, T100, Legend, Pathfinder, Pickup, Sentra, Integra, Stealth, Accord, ES300, Diamante, NX, Camry, Stanza, Celica, MR2, Prelude, and RX-7
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Dayco Small I.D. Heater Hose 86801

The Dayco Small I.D. Heater Hose 86801 is designed for reliable HVAC system performance in a range of vehicles including Acura, Honda, Toyota, and Nissan models. Constructed from durable EPDM material, this hose ensures consistent heat transfer and resistance to automotive fluids.

  • Material: EPDM for heat and chemical resistance
  • Color: Black
  • Inside Diameter: 5/16 inch on both ends
  • Hose Type: Single I.D. hose
  • Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
  • Trunk Height: 12 1/2 inches
  • Compatible with multiple makes and models including Toyota Camry, Honda Accord, Nissan Sentra, and more

Dayco Small I.D. Heater Hose Product Line Details

The Small I.D. Heater Hose line by Dayco focuses on providing precise fitment and durability for HVAC applications requiring smaller inside diameter hoses. This product line is engineered to meet strict SAE specifications, ensuring compatibility and performance in various passenger vehicles. The 86801 part number represents a single I.D. hose option within this line, suitable for multiple popular models.

Detailed Product Description

This HVAC heater hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids, making it suitable for heater core connections. Both ends have a 5/16 inch inside diameter, providing a consistent flow path for coolant within the HVAC system. The hose does not include a heat shield or protective sleeve, which is typical for applications where additional protection is not required. Its compliance with SAE J20R3 Class D-1 and SAE J1684 Type EC standards confirms its suitability for automotive heating systems.

Common Uses and Problem Solving

  • Replacement of worn or cracked heater hoses in Acura Legend and Honda Prelude HVAC systems
  • Resolving coolant leaks in Toyota 4Runner and Nissan Pathfinder heater core lines
  • Maintaining proper coolant flow in Mazda RX-7 and Lexus ES300 heating circuits
  • Addressing heater hose failures in Mitsubishi Diamante and Kia Amanti vehicles
  • Ensuring HVAC system integrity in Dodge T100 and Toyota Camry models

Installation Notes and Tips

  • Verify hose inside diameter matches vehicle specifications (5/16 inch for both ends)
  • Inspect surrounding components for wear or damage before installation
  • Ensure clamps are properly tightened to prevent leaks without damaging the hose
  • Replace hoses in pairs when possible to maintain system balance
  • Check for proper routing to avoid kinks or contact with hot engine parts

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 86801 to meet SAE automotive standards, ensuring reliable performance in HVAC systems. The EPDM material provides durability against heat and chemical exposure typical in engine compartments. While specific warranty details are not provided, Dayco products generally adhere to industry quality controls and are backed by the brand's commitment to automotive component standards.

BrandDayco
Part Number86801
PositionSmall I.D. Heater Hose, Throttle Body To Thermostat
ColorBlack
End 1 Inside Diameter5/16
End 2 Inside Diameter5/16
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R3 Class D-1, SAE J1684 Type EC
Trunk Height12 1/2

This part fits 70 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005KiaAmantiThrottle Body To ThermostatSmall I.D. Heater Hose
2004KiaAmantiThrottle Body To ThermostatSmall I.D. Heater Hose
2002Toyota4RunnerPipe To Throttle BodySmall I.D. Heater Hose
2001Toyota4RunnerPipe To Throttle BodySmall I.D. Heater Hose
2000AcuraRLN/ASmall I.D. Heater Hose
1999AcuraRLN/ASmall I.D. Heater Hose
1998AcuraRLN/ASmall I.D. Heater Hose
1998AcuraTL3.2LV6N/ASmall I.D. Heater Hose
1998ToyotaT1003.4LV6Pipe To Throttle BodySmall I.D. Heater Hose
1997AcuraRLN/ASmall I.D. Heater Hose
1997AcuraTL3.2LV6N/ASmall I.D. Heater Hose
1997ToyotaT1003.4LV6Pipe To Throttle BodySmall I.D. Heater Hose
1996AcuraRLN/ASmall I.D. Heater Hose
1996AcuraTL3.2LV6N/ASmall I.D. Heater Hose
1996ToyotaT1003.4LV6Pipe To Throttle BodySmall I.D. Heater Hose
1995AcuraLegendN/ASmall I.D. Heater Hose
1995NissanPathfinderThrottle Body To Intake ManifoldSmall I.D. Heater Hose
1995Toyota4Runner2.4LL4Pipe To EngineSmall I.D. Heater Hose
1995ToyotaPickup2.4LL4Pipe To EngineSmall I.D. Heater Hose
1994AcuraLegendN/ASmall I.D. Heater Hose
1994NissanSentra1.6LL4Throttle Body To ValveSmall I.D. Heater Hose
1994Toyota4Runner3.0LV6Pipe To EngineSmall I.D. Heater Hose
1994Toyota4Runner2.4LL4Pipe To EngineSmall I.D. Heater Hose
1994ToyotaPickup3.0LV6Pipe To EngineSmall I.D. Heater Hose
1994ToyotaT1003.0LV6Pipe-4 To EngineSmall I.D. Heater Hose
1993AcuraIntegra1.8LL4Pipe To Intake ManifoldSmall I.D. Heater Hose
1993DodgeStealthN/ASmall I.D. Heater Hose
1993HondaAccordValve To ThermostatSmall I.D. Heater Hose
1993LexusES300N/ASmall I.D. Heater Hose
1993MitsubishiDiamantePipe To Throttle BodySmall I.D. Heater Hose
1993MitsubishiDiamanteN/ASmall I.D. Heater Hose
1993NissanNX1.6LL4Throttle Body To ValveSmall I.D. Heater Hose
1993NissanSentra1.6LL4Throttle Body To ValveSmall I.D. Heater Hose
1993Toyota4Runner3.0LV6Pipe To EngineSmall I.D. Heater Hose
1993Toyota4Runner2.4LL4Pipe To EngineSmall I.D. Heater Hose
1993ToyotaCamry3.0LV6N/ASmall I.D. Heater Hose
1993ToyotaPickup3.0LV6Pipe To EngineSmall I.D. Heater Hose
1993ToyotaPickup2.4LL4Pipe To EngineSmall I.D. Heater Hose
1993ToyotaT100Pipe-4 To EngineSmall I.D. Heater Hose
1992AcuraIntegra1.8LL4Intake Manifold To PipeSmall I.D. Heater Hose
1992HondaAccordValve To ThermostatSmall I.D. Heater Hose
1992LexusES300N/ASmall I.D. Heater Hose
1992MitsubishiDiamantePipe To Throttle BodySmall I.D. Heater Hose
1992NissanNX1.6LL4Throttle Body To ValveSmall I.D. Heater Hose
1992NissanSentra1.6LL4Throttle Body To ValveSmall I.D. Heater Hose
1992Toyota4Runner2.4LL4Pipe To EngineSmall I.D. Heater Hose
1992ToyotaCamry3.0LV6N/ASmall I.D. Heater Hose
1992ToyotaCelica2.0LL4Pipe-1 To Pipe-2Small I.D. Heater Hose
1992ToyotaMR22.0LL4Pipe To PipeSmall I.D. Heater Hose
1992ToyotaMR22.0LL4Pipe-3 To EngineSmall I.D. Heater Hose
1991AcuraIntegraIntake Manifold To PipeSmall I.D. Heater Hose
1991HondaAccordValve To ThermostatSmall I.D. Heater Hose
1991HondaPrelude2.0LL4Pipe To Intake ManifoldSmall I.D. Heater Hose
1991HondaPrelude2.1LL4Pipe To Intake ManifoldSmall I.D. Heater Hose
1991NissanNX1.6LL4Throttle Body To ValveSmall I.D. Heater Hose
1991NissanSentra1.6LL4Throttle Body To ValveSmall I.D. Heater Hose
1991Toyota4Runner2.4LL4Pipe To EngineSmall I.D. Heater Hose
1991ToyotaCelica2.0LL4Pipe To PipeSmall I.D. Heater Hose
1991ToyotaMR22.0LL4Pipe To PipeSmall I.D. Heater Hose
1991ToyotaMR22.0LL4Pipe-3 To EngineSmall I.D. Heater Hose
1990AcuraIntegraIntake Manifold To PipeSmall I.D. Heater Hose
1990HondaAccordValve To ThermostatSmall I.D. Heater Hose
1990HondaPrelude2.0LL4Pipe To Intake ManifoldSmall I.D. Heater Hose
1990HondaPrelude2.1LL4Pipe To Intake ManifoldSmall I.D. Heater Hose
1990ToyotaCelica2.0LL4Pipe To PipeSmall I.D. Heater Hose
1989HondaPreludePipe To Intake ManifoldSmall I.D. Heater Hose
1988HondaPreludePipe To Intake ManifoldSmall I.D. Heater Hose
1988MazdaRX-7Throttle Body To EngineSmall I.D. Heater Hose
1987MazdaRX-7Throttle Body To EngineSmall I.D. Heater Hose
1986MazdaRX-7Throttle Body To EngineSmall 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:

16001M

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