Dayco 87868 HVAC Heater Hose - Engine To Heater
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Dayco
 Small I.D. Heater Hose

Dayco 87868 HVAC Heater Hose - Engine To Heater

Brand Dayco 87868
Position Engine To Heater
Color Black
Contains Protective Sleeve Y
End 1 Inside Diameter 5/8
End 1 Outside Diameter 15/16
End 2 Inside Diameter 5/8
End 2 Outside Diameter 15/16
Hose Type Single I.D. Hose
Material EPDM
SAE Specification SAE J20R3 Class D-1, SAE J1684 Type EC
Trunk Height 13 1/2
Product line Small I.D. Heater Hose
Fits Nissan and Mazda · 6 vehicles

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

Protective sleeve included. Adds extra abrasion resistance where the hose runs.

Heater hose. Built as a single I.D. hose for HVAC coolant flow.

Cross-references ACDelco 16036M, CARQUEST 18718 and Datsun/Nissan 92400-85M00 for the same application. See all 9.

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Dayco 87868 Heater Hose Overview

Dayco 87868 is a Small I.D. Heater Hose built for engine-to-heater coolant routing in select Nissan and Mazda applications. This HVAC heater hose uses EPDM construction, a black finish, and a protective sleeve to support reliable coolant transfer in tight underhood routing.

Compatible with 1989-1990 Nissan Pulsar NX, Engine To Heater; 1989-1990 Nissan Sentra, Engine To Heater; and 1986-1987 Mazda 626, Engine To Heater. The Dayco 87868 heater hose is sized with 5/8-inch inside diameter ends and follows SAE J20R3 Class D-1 and SAE J1684 Type EC specifications.

Key Features

  • EPDM rubber construction for heater hose service
  • Black finish for a factory-style appearance
  • 5/8-inch inside diameter at both ends
  • Protective sleeve included for added abrasion resistance
  • Single I.D. hose design for engine-to-heater routing
  • Built to SAE J20R3 Class D-1 and SAE J1684 Type EC standards
  • Dayco 87868 part number for direct catalog matching

Product Details

Dayco’s Small I.D. Heater Hose line focuses on compact coolant hose routing where a consistent 5/8-inch diameter is required. This hose is formed from EPDM and measures 15/16-inch outside diameter at both ends, with a trunk height of 13 1/2 inches. The protective sleeve adds an extra layer where the hose passes near heat sources or contact points. For buyers searching for a Dayco 87868 heater hose for Nissan Sentra or Nissan Pulsar NX, this part provides a direct match to the listed engine-to-heater applications.

This part cross-references Gates 18718 for the same application.

What It Is Used For

  • Replacing a cracked or leaking engine-to-heater coolant hose
  • Restoring heater core coolant flow in Nissan Sentra and Pulsar NX applications
  • Addressing coolant seepage at a worn 5/8-inch heater hose connection
  • Replacing aged hose material that has hardened, softened, or split
  • Servicing Mazda 626 heater hose routing with the correct small I.D. hose

Installation Notes and Tips

Verify the hose path, end diameters, and routing before installation. Match the 5/8-inch inside diameter to the vehicle’s heater hose connections and confirm the engine-to-heater position listed for your application. Inspect adjoining clamps, fittings, and heater core tubes for wear or corrosion before installing the new hose. Ensure the hose is routed away from sharp edges and hot components, and use the protective sleeve in the intended contact area.

Quality Assurance

This Dayco heater hose is manufactured to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications for heater hose service. The EPDM construction and protective sleeve support dependable use in the listed Nissan and Mazda applications.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1990NissanPulsar NX——Engine To HeaterSmall I.D. Heater Hose
1990NissanSentra——Engine To HeaterSmall I.D. Heater Hose
1989NissanPulsar NX1.6LL4Engine To HeaterSmall I.D. Heater Hose
1989NissanSentra——Engine To HeaterSmall I.D. Heater Hose
1987Mazda626——Engine To HeaterSmall I.D. Heater Hose
1986Mazda626——Engine To HeaterSmall I.D. Heater Hose
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 16036MCARQUEST — 18718Datsun/Nissan — 92400-85M00Datsun/Nissan — 92400-85M10Duralast — D87868Freshstart — 4605Gates — 18718Goodyear — 63333NAPA — 10718