HomeHVAC > Hoses and PipesDayco 88427 HVAC Heater Hose - Heater Inlet
Part #: 88427

Dayco 88427 HVAC Heater Hose - Heater Inlet

Small I.D. Heater Hose, Heater Inlet
⚙️ 37 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Small I.D. Heater Hose, Heater Inlet
🚗Fitment: Chevrolet, Pontiac, and Saturn, HHR, Cobalt, G5, Ion, and Pursuit
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Overview of Dayco Small I.D. Heater Hose 88427

The Dayco Small I.D. Heater Hose 88427 is designed for reliable HVAC system performance in select Chevrolet, Pontiac, and Saturn vehicles. Engineered with durable EPDM material, this hose ensures consistent heat transfer and resistance to automotive fluids.

  • Constructed from EPDM for heat and chemical resistance
  • Black single inside diameter hose with 23/32 inch ends
  • Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
  • Compatible with Chevrolet Cobalt, Pontiac G5, Saturn Ion, HHR, and Pursuit models
  • Trunk height dimension of 8 inches for precise fitment

Detailed Product Description

The Dayco Small I.D. Heater Hose 88427 is a single inside diameter hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. Both ends of the hose have an inside diameter of 23/32 inches, providing a consistent and secure connection within the HVAC system. This hose does not include a heat shield or protective sleeve, focusing on straightforward replacement applications. It complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for heater hoses in automotive HVAC systems.

The Small I.D. Heater Hose product line from Dayco is specifically designed to address the needs of smaller diameter heater hose applications. This line emphasizes precise fitment and material durability, making it suitable for vehicles requiring compact and reliable heater hoses. The 88427 part number is a representative component within this line, tailored for certain GM models.

Compatible Vehicles and Applications

  • Chevrolet Cobalt heater hose replacement
  • Pontiac G5 HVAC hose repair
  • Saturn Ion heater hose maintenance
  • Saturn HHR and Pursuit HVAC system service

Installation Notes and Tips

  • Ensure the hose diameter matches the OEM specifications (23/32 inch inside diameter)
  • Inspect hose connections for corrosion or damage before installation
  • Use appropriate clamps to secure the hose ends firmly
  • Verify no kinks or sharp bends in the hose after installation
  • Replace any worn or damaged clamps during the hose replacement process

Quality Assurance and Warranty

Dayco manufactures the Small I.D. Heater Hose 88427 to meet SAE standards, providing assurance of material quality and dimensional accuracy. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls to support reliable HVAC system operation in Chevrolet, Pontiac, and Saturn vehicles.

BrandDayco
Part Number88427
PositionSmall I.D. Heater Hose, Heater Inlet
ColorBlack
End 1 Inside Diameter23/32
End 2 Inside Diameter23/32
Hose TypeSingle I.D. Hose
MaterialEPDM
SAE SpecificationSAE J20R3 Class D-1, SAE J1684 Type EC
Trunk Height8

This part fits 37 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011ChevroletHHR2.2LL4Heater InletSmall I.D. Heater Hose
2011ChevroletHHR2.4LL4Heater InletSmall I.D. Heater Hose
2010ChevroletCobalt2.2LL4Heater InletSmall I.D. Heater Hose
2010ChevroletHHR2.2LL4Heater InletSmall I.D. Heater Hose
2010ChevroletHHR2.4LL4Heater InletSmall I.D. Heater Hose
2010PontiacG5Heater InletSmall I.D. Heater Hose
2009ChevroletCobalt2.2LL4Heater InletSmall I.D. Heater Hose
2009ChevroletHHR2.2LL4Heater InletSmall I.D. Heater Hose
2009ChevroletHHR2.4LL4Heater InletSmall I.D. Heater Hose
2009PontiacG5Heater InletSmall I.D. Heater Hose
2008ChevroletCobalt2.2LL4Heater InletSmall I.D. Heater Hose
2008ChevroletCobalt2.4LL4Heater InletSmall I.D. Heater Hose
2008ChevroletHHR2.2LL4Heater InletSmall I.D. Heater Hose
2008ChevroletHHR2.4LL4Heater InletSmall I.D. Heater Hose
2008PontiacG52.2LL4Heater InletSmall I.D. Heater Hose
2008PontiacG52.4LL4Heater InletSmall I.D. Heater Hose
2007ChevroletCobalt2.2LL4Heater InletSmall I.D. Heater Hose
2007ChevroletCobalt2.4LL4Heater InletSmall I.D. Heater Hose
2007ChevroletHHR2.2LL4Heater InletSmall I.D. Heater Hose
2007ChevroletHHR2.4LL4Heater InletSmall I.D. Heater Hose
2007PontiacG52.2LL4Heater InletSmall I.D. Heater Hose
2007PontiacG52.4LL4Heater InletSmall I.D. Heater Hose
2007SaturnIon2.2LL4Heater InletSmall I.D. Heater Hose
2007SaturnIon2.4LL4Heater InletSmall I.D. Heater Hose
2006ChevroletCobalt2.2LL4Heater InletSmall I.D. Heater Hose
2006ChevroletCobalt2.4LL4Heater InletSmall I.D. Heater Hose
2006ChevroletHHR2.2LL4Heater InletSmall I.D. Heater Hose
2006ChevroletHHR2.4LL4Heater InletSmall I.D. Heater Hose
2006PontiacPursuit2.2LL4Heater InletSmall I.D. Heater Hose
2006PontiacPursuit2.4LL4Heater InletSmall I.D. Heater Hose
2006SaturnIon2.2LL4Heater InletSmall I.D. Heater Hose
2006SaturnIon2.4LL4Heater InletSmall I.D. Heater Hose
2005ChevroletCobalt2.2LL4Heater InletSmall I.D. Heater Hose
2005PontiacPursuitHeater InletSmall I.D. Heater Hose
2005SaturnIon2.2LL4Heater InletSmall I.D. Heater Hose
2004SaturnIon2.2LL4Heater InletSmall I.D. Heater Hose
2003SaturnIonHeater InletSmall 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:

14397S14463S14476S

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