Dayco 88353 HVAC Heater Hose

Dayco Small I.D. Heater Hose 88353

Dayco 88353 is a Small I.D. Heater Hose built from EPDM for coolant transfer in HVAC and heater circuit applications. With a 7/8 in. inside diameter at both ends, this black single I.D. hose is made for specific heater hose routing where a direct-fit replacement is required.

The Dayco Small I.D. Heater Hose line focuses on OE-style hose construction for heater and coolant connections that need consistent sizing and dependable routing. Part number 88353 is listed for a wide range of Cadillac Seville, Chevrolet Camaro, Pontiac Firebird, and Nissan Maxima applications, along with several other GM and Ford fitments.

Key Features

• EPDM construction for heater and coolant hose service
• 7/8 in. inside diameter at both ends
• Black single I.D. hose design
• Built to SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
• Direct replacement for select HVAC heater hose applications
• Dayco 88353 cross-references ACDelco 14175S and Gates 19605 for the same application

Fitment Details

• Fits 2002-2004 Cadillac Seville, Coolant Reservoir
• Fits 2000 Cadillac Seville, Coolant Reservoir
• Fits 2001 Cadillac Seville, Radiator Surge Tank Outlet
• Fits 1999 Cadillac Seville, Tee To Reservoir
• Fits 1998 Cadillac Seville, Pipe To Reservoir
• Fits 1987-1995 Chevrolet Camaro, Heater To Pipe; compatible with vehicles containing air conditioning
• Fits 1991-1994 Nissan Maxima, Heater To Valve
• Fits 1986-1992 Chevrolet Camaro, Heater To Pipe-2
• Fits 1991-1992 Chevrolet Camaro, Heater To Pipe
• Fits 1985-1986 Chevrolet Camaro, Heater To Pipe
• Fits 1986-1992 Pontiac Firebird, Heater To Pipe-2
• Fits 1992 Pontiac Firebird, Heater To Pipe-1
• Fits 1988 Pontiac Firebird, Heater To Pipe-1
• Fits 1987-1992 Pontiac Firebird, Heater To Pipe; compatible with vehicles containing air conditioning
• Fits 1987-1989 Chevrolet Corsica, Pipe To Pipe
• Fits 1987-1988 Buick Skyhawk, Pipe To Intake Manifold
• Fits 1988 Ford Thunderbird, Engine To Valve; fits models with Auto Temp. Control
• Fits 1987-1988 Mercury Cougar, Valve To Engine; fits models with Auto Temp. Control
• Fits 1988 Oldsmobile Firenza, Pipe To Intake Manifold
• Fits 1987-1988 Pontiac Tempest, Pipe To Pipe
• Fits 1986 Pontiac Firebird, Heater To Pipe
• Fits 1985 Chevrolet Camaro, Heater To Pipe-3
• Fits 1985 Pontiac Firebird, Heater To Pipe-3

What This Hose Helps Address

• Cracked or hardened heater hose sections
• Coolant seepage at small-diameter heater connections
• Restricted heater circuit flow from deteriorated hose material
• Incorrect hose sizing at reservoir, valve, or pipe connections
• Service replacement for aging HVAC coolant routing on Cadillac Seville, Chevrolet Camaro, and Pontiac Firebird applications

Installation Notes and Tips

Verify the hose routing, end diameter, and connection points before installation. This part is specified as a 7/8 in. single I.D. hose, so it should be matched to the exact heater or coolant reservoir location listed for your vehicle. Inspect adjoining pipes, valves, and reservoir nipples for wear or corrosion before installing Dayco 88353.

Quality Assurance

Dayco 88353 is built to meet SAE J20R3 Class D-1 and SAE J1684 Type EC requirements for heater hose service. The EPDM construction and OE-style sizing support consistent performance in select Cadillac Seville, Chevrolet Camaro, Pontiac Firebird, and Nissan Maxima applications.