Dayco 88422 HVAC Heater Hose - Auxiliary Water Pump Outlet or Heater Inlet
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Dayco
 Small I.D. Heater Hose

Dayco 88422 HVAC Heater Hose - Auxiliary Water Pump Outlet or Heater Inlet

Brand Dayco 88422
Position Heater Inlet and Auxiliary Water Pump Outlet
Material Epdm
Color Black
End 1 Inside Diameter 3/4
End 2 Inside Diameter 3/4
Contains Heat Shield N
Contains Protective Sleeve Y
Hose Type Single i.d. hose
SAE Specification Sae j20r3 class d-1, sae j1684 type ec
Trunk Height 24
Product line Small I.D. Heater Hose
Fits Cadillac, INFINITI, and Nissan · 11 vehicles

EPDM construction. Resists heat and coolant exposure in HVAC hose service.

Protective sleeve. Adds abrasion resistance where the hose routes through tight spaces.

SAE-rated hose. Built to SAE J20R3 Class D-1 and SAE J1684 Type EC standards.

Cross-references ACDelco 16452M, ACDelco 16506M and CARQUEST 19862 for the same application. See all 12.

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Overview

Dayco 88422 is a small I.D. HVAC heater hose built for coolant transfer in heating circuits and auxiliary water pump outlet applications. It uses EPDM construction with a protective sleeve and a 3/4-inch inside diameter at both ends for a direct-size replacement.

Compatible with select Cadillac, INFINITI, and Nissan applications, this hose is specified as a single I.D. hose and meets SAE J20R3 Class D-1 and SAE J1684 Type EC requirements. Dayco 88422 is a practical choice when replacing a worn heater hose on the Cadillac CTS, Cadillac STS, INFINITI I35, Nissan Altima, or Nissan Maxima.

Key Features

  • EPDM rubber construction for HVAC coolant routing.
  • 3/4-inch inside diameter at both ends for matched hose sizing.
  • Protective sleeve included for added abrasion resistance.
  • Single I.D. hose design for heater inlet and auxiliary water pump outlet use.
  • Built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications.

Fitment Details

  • Fits 2008 Cadillac CTS, Auxiliary Water Pump Outlet, Small I.D. Heater Hose.
  • Fits 2008 Cadillac STS, Auxiliary Water Pump Outlet, Small I.D. Heater Hose.
  • Fits 2002-2004 INFINITI I35, Heater Inlet, Small I.D. Heater Hose.
  • Fits 2002-2003 Nissan Altima, Heater Inlet, Small I.D. Heater Hose.
  • Fits 2002-2004 Nissan Maxima, Heater Inlet, Small I.D. Heater Hose.
  • Fits 2004 Nissan Altima, Heater Inlet, Mfg. To 01/04; Small I.D. Heater Hose.
  • Fits 2004 Nissan Maxima, Heater Inlet, Mfg. To 01/04; Small I.D. Heater Hose.

Common Replacement Uses

  • Cracked or softened heater hose material.
  • Coolant seepage at the heater inlet connection.
  • Restricted flow from a deteriorated small I.D. hose.
  • Heat-related hose wear in HVAC coolant routing.
  • Replacement for a damaged auxiliary water pump outlet hose.

Installation Notes

Verify hose routing, end diameter, and application notes before installation. Match the vehicle build date where noted for 2004 Nissan Altima and 2004 Nissan Maxima applications. Inspect adjoining clamps, fittings, and coolant passages for wear or contamination before installing the new hose.

Quality Assurance

Dayco 88422 is manufactured to SAE J20R3 Class D-1 and SAE J1684 Type EC standards for heater hose service. This part cross-references Gates (e.g., 19862, 19896) for the same application.

Related reading

This part fits 11 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2008CadillacCTS——Auxiliary Water Pump OutletSmall I.D. Heater Hose
2008CadillacSTS3.6LV6Auxiliary Water Pump OutletSmall I.D. Heater Hose
2004INFINITII35——Heater InletSmall I.D. Heater Hose
2004NissanAltima3.5LV6Heater InletMfg. To 01/04; Small I.D. Heater Hose
2004NissanMaxima——Heater InletMfg. To 01/04; Small I.D. Heater Hose
2003INFINITII35——Heater InletSmall I.D. Heater Hose
2003NissanAltima3.5LV6Heater InletSmall I.D. Heater Hose
2003NissanMaxima——Heater InletSmall I.D. Heater Hose
2002INFINITII35——Heater InletSmall I.D. Heater Hose
2002NissanAltima3.5LV6Heater InletSmall I.D. Heater Hose
2002NissanMaxima——Heater InletSmall I.D. Heater Hose
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 16452MACDelco — 16506MCARQUEST — 19862CARQUEST — 19896Datsun/Nissan — 92400-5Y700Datsun/Nissan — 92400-8J100Duralast — E88422Gates — 19862Gates — 19896General Motors — 25808863NAPA — 11862NAPA — 11896