HomeHVAC > Hoses and PipesDayco 87972 HVAC Heater Hose - Heater Outlet or Lower
Part #: 87972

Dayco 87972 HVAC Heater Hose - Heater Outlet or Lower

Small I.D. Heater Hose, Lower and Heater Outlet
⚙️ 66 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$34.39Free 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, Lower and Heater Outlet
🚗Fitment: Dodge and Ram, 1500, 1500 Classic, 2500, 3500, Ram 1500, Ram 2500, and Ram 3500
🔄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 87972

The Dayco Small I.D. Heater Hose 87972 is designed to provide reliable heating system performance for Dodge Ram trucks. Engineered with durable EPDM material, this black single inside diameter hose ensures consistent flow and heat resistance for your vehicle's HVAC system.

  • Constructed from high-quality EPDM rubber for heat and ozone resistance
  • Black color for easy identification and compatibility
  • 5/8 inch inside diameter on both ends for uniform fit
  • 1 inch outside diameter on both ends for secure connections
  • Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
  • Trunk height of 33 1/2 inches for precise fitment

Detailed Product Description

This Dayco Small I.D. Heater Hose 87972 is a single inside diameter hose designed specifically for HVAC heating applications. Made from EPDM, it offers excellent resistance to heat, coolant, and environmental factors, making it suitable for the demanding conditions under the hood. The hose features a consistent 5/8 inch inside diameter on both ends and a 1 inch outside diameter, ensuring a secure and leak-free connection within the heating system. It does not include a heat shield or protective sleeve, focusing on straightforward, reliable performance.

The Small I.D. Heater Hose product line by Dayco is tailored for precise HVAC hose replacements, providing OEM-quality materials and specifications. This line is engineered to meet or exceed SAE standards, ensuring compatibility and durability for specific vehicle applications such as Dodge Ram models.

Compatible Vehicles and Applications

  • Compatible with Dodge Ram 1500, 1500 Classic, 2500, and 3500 models
  • Designed for HVAC heater hose replacement in Dodge Ram trucks
  • Ideal for restoring proper heater core function and coolant flow

Common Issues Addressed by This Heater Hose

  • Heater core leaks due to cracked or worn hoses
  • Reduced heating efficiency from collapsed or clogged hoses
  • Coolant leaks causing engine overheating
  • Hose deterioration from heat and ozone exposure
  • Replacement of aged or damaged HVAC heater hoses

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns from hot coolant. Verify hose diameters match the vehicle’s heater core and fittings. Inspect clamps and connections for wear and replace if necessary to prevent leaks. Properly route the hose to avoid kinks or contact with moving parts. No heat shield or protective sleeve is included, so take care to avoid abrasion during installation.

Quality Assurance and Warranty

Dayco Small I.D. Heater Hose 87972 is manufactured to meet SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring reliable performance and durability. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to maintain consistent product integrity for Dodge Ram HVAC applications.

BrandDayco
Part Number87972
PositionSmall I.D. Heater Hose, Lower and Heater Outlet
MaterialEpdm
ColorBlack
End 1 Inside Diameter5/8
End 2 Inside Diameter5/8
Contains Heat ShieldN
Contains Protective SleeveN
End 1 Outside Diameter1
End 2 Outside Diameter1
Hose TypeSingle i.d. hose
SAE SpecificationSae j20r3 class d-1, sae j1684 type ec
Trunk Height33 1/2

This part fits 66 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2024Ram1500 Classic5.7LV8LowerSmall I.D. Heater Hose
2023Ram1500 Classic5.7LV8LowerSmall I.D. Heater Hose
2022Ram1500 Classic5.7LV8LowerSmall I.D. Heater Hose
2021Ram1500 Classic5.7LV8LowerSmall I.D. Heater Hose
2020Ram1500 Classic5.7LV8LowerSmall I.D. Heater Hose
2020Ram1500 Classic5.7LV8Heater OutletSmall I.D. Heater Hose
2019Ram1500 Classic5.7LV8LowerSmall I.D. Heater Hose
2019Ram1500 Classic5.7LV8Heater OutletSmall I.D. Heater Hose
2018Ram15005.7LV8LowerSmall I.D. Heater Hose
2018Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2018Ram25005.7LV8GASLowerSmall I.D. Heater Hose
2018Ram25005.7LV8GASHeater OutletSmall I.D. Heater Hose
2018Ram35005.7LV8LowerSmall I.D. Heater Hose
2018Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2017Ram15005.7LV8LowerSmall I.D. Heater Hose
2017Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2017Ram25005.7LV8GASLowerSmall I.D. Heater Hose
2017Ram25005.7LV8GASHeater OutletSmall I.D. Heater Hose
2017Ram35005.7LV8LowerSmall I.D. Heater Hose
2017Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2016Ram15005.7LV8LowerSmall I.D. Heater Hose
2016Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2016Ram25005.7LV8GASLowerSmall I.D. Heater Hose
2016Ram25005.7LV8GASHeater OutletSmall I.D. Heater Hose
2016Ram35005.7LV8LowerSmall I.D. Heater Hose
2016Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2015Ram15005.7LV8LowerSmall I.D. Heater Hose
2015Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2015Ram25005.7LV8GASLowerSmall I.D. Heater Hose
2015Ram25005.7LV8GASHeater OutletSmall I.D. Heater Hose
2015Ram35005.7LV8LowerSmall I.D. Heater Hose
2015Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2014Ram15005.7LV8LowerSmall I.D. Heater Hose
2014Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2014Ram25005.7LV8GASLowerSmall I.D. Heater Hose
2014Ram25005.7LV8GASHeater OutletSmall I.D. Heater Hose
2014Ram35005.7LV8LowerSmall I.D. Heater Hose
2014Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2013Ram15005.7LV8LowerSmall I.D. Heater Hose
2013Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2013Ram25005.7LV8GASLowerSmall I.D. Heater Hose
2013Ram25005.7LV8GASHeater OutletSmall I.D. Heater Hose
2013Ram35005.7LV8LowerSmall I.D. Heater Hose
2013Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2012Ram15005.7LV8LowerSmall I.D. Heater Hose
2012Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2012Ram25005.7LV8LowerSmall I.D. Heater Hose
2012Ram25005.7LV8Heater OutletSmall I.D. Heater Hose
2012Ram35005.7LV8LowerSmall I.D. Heater Hose
2012Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2011Ram15005.7LV8LowerSmall I.D. Heater Hose
2011Ram15005.7LV8Heater OutletSmall I.D. Heater Hose
2011Ram25005.7LV8LowerSmall I.D. Heater Hose
2011Ram25005.7LV8Heater OutletSmall I.D. Heater Hose
2011Ram35005.7LV8LowerSmall I.D. Heater Hose
2011Ram35005.7LV8Heater OutletSmall I.D. Heater Hose
2010DodgeRam 15005.7LV8LowerSmall I.D. Heater Hose
2010DodgeRam 15005.7LV8Heater OutletSmall I.D. Heater Hose
2010DodgeRam 25005.7LV8LowerSmall I.D. Heater Hose
2010DodgeRam 25005.7LV8Heater OutletSmall I.D. Heater Hose
2009DodgeRam 15005.7LV8LowerSmall I.D. Heater Hose
2009DodgeRam 15005.7LV8Heater OutletSmall I.D. Heater Hose
2009DodgeRam 25005.7LV8LowerSmall I.D. Heater Hose
2009DodgeRam 25005.7LV8Heater OutletSmall I.D. Heater Hose
2009DodgeRam 35005.7LV8LowerSmall I.D. Heater Hose
2009DodgeRam 35005.7LV8Heater OutletSmall I.D. Heater Hose

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