Dayco 87709 HVAC Heater Hose - Heater To Engine or Heater To Pipe

Dayco Small I.D. Heater Hose 87709

Dayco 87709 is a small inside diameter HVAC heater hose built for heater-to-engine routing in select GM compact cars. It uses EPDM construction with a black finish and a protective sleeve to support heat exposure in underhood heater hose applications.

Key Features

• EPDM heater hose construction for HVAC coolant routing
• 5/8 in. inside diameter at both ends
• Single I.D. hose design for heater-to-engine connections
• Black exterior with protective sleeve included
• Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Dayco part number 87709 for direct catalog lookup

Product Details

This Dayco Small I.D. Heater Hose line is built for applications that require a compact coolant hose with consistent 5/8 in. end diameters. The EPDM material is selected for heater hose service, while the protective sleeve adds coverage in locations where additional underhood protection is specified. Dayco 87709 is a practical replacement for heater-to-engine routing on Buick Skylark, Oldsmobile Achieva, Pontiac Grand Am, Oldsmobile Cutlass Calais, and Oldsmobile Calais applications listed below.

This part cross-references ACDelco 18061L and Gates 18889 for the same application.

Vehicle Fitment

• Fits 1991-1993 Buick Skylark, Heater To Engine
• Fits 1988-1989 Buick Skylark, Heater To Engine
• Fits 1992-1993 Oldsmobile Achieva, Heater To Engine
• Fits 1991-1993 Pontiac Grand Am, Heater To Engine
• Fits 1988-1989 Pontiac Grand Am, Heater To Engine
• Fits 1988-1991 Oldsmobile Cutlass Calais, Heater To Engine, Protective sleeve required for HVAC Heater Hose.; Small I.D. Heater Hose
• Fits 1990 Buick Skylark, Heater To Engine, Protective sleeve required for HVAC Heater Hose.; Small I.D. Heater Hose
• Fits 1990 Pontiac Grand Am, Heater To Engine, Protective sleeve required for HVAC Heater Hose.; Small I.D. Heater Hose
• Fits 1989 Oldsmobile Cutlass Calais, Heater To Engine, Small I.D. Heater Hose
• Fits 1987 Oldsmobile Calais, Heater To Engine, Protective sleeve required for HVAC Heater Hose.; Small I.D. Heater Hose

Installation Notes

• Verify the 5/8 in. inside diameter at both ends before installation.
• Match the hose routing to the heater-to-engine path shown for the vehicle.
• Use the protective sleeve where the fitment notes specify it for HVAC heater hose service.
• Inspect adjoining heater pipes, clamps, and coolant connections for wear before replacing the hose.

Quality Assurance

Dayco heater hose products are built to meet SAE J20R3 Class D-1 and SAE J1684 Type EC requirements for heater hose service. For buyers searching Dayco 87709, this specification-based construction supports accurate replacement selection for the listed Buick Skylark, Oldsmobile Achieva, Pontiac Grand Am, Oldsmobile Cutlass Calais, and Oldsmobile Calais applications.