Keep hot coolant moving between the engine and heater core with the Dayco heater hose 88425, a molded, direct-fit replacement for the listed applications. It fits many vehicles, among them the 2001-2005 Chevrolet Venture 3.4L, 2002-2005 Buick Rendezvous 3.4L and 2001-2005 Pontiac Aztek 3.4L; see the Buyer's Guide tab for the full list. Pre-formed for the heater-to-engine position, it is molded to shape rather than cut and bent from straight hose.
As a heater hose, it carries engine coolant to and from the heater core so the cabin can produce heat. If a cracked, swollen or leaking hose is behind coolant loss or weak cabin heat, this molded unit replaces it.
Interchange: 16321M · 19287 · 11287
This part cross-references / interchanges with the following part numbers:
What vehicles does the Dayco heater hose 88425 fit?
It fits many vehicles, among them the 2001-2005 Chevrolet Venture 3.4L, 2002-2005 Buick Rendezvous 3.4L and 2001-2005 Pontiac Aztek 3.4L. See the Buyer's Guide tab for the full list.
Is this a Dayco hvac heater hose?
Yes. It is a molded HVAC heater hose that routes coolant between the engine and heater core so the system can deliver cabin heat.
What are the end sizes on this Dayco 3/4 heater hose?
It has dual-diameter ends: one measures .63 in inside diameter (near 5/8 in) and the other .72 in (near 3/4 in). The centerline length is 13 in.
Where does the hose install?
It is positioned heater-to-engine, connecting the heater core to the engine along its pre-molded routing.
What are signs this heater hose may need replacing?
Coolant leaks or drips, a swollen or cracked hose, and weak or no cabin heat can signal a failing hose. Diagnose the cause before replacing, as other parts can share these symptoms.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
