Dayco 71780 radiator coolant hose for the 1989-1997 Toyota Corolla and other vehicles routes coolant between the thermostat, engine and radiator.
A coolant leak, a hose that feels soft or swollen, or cracks in the outer surface can mean a radiator coolant hose is wearing out. A leak or overheating alone does not prove this hose is the problem, since a loose clamp can leak the same way. Inspect only with the engine off and cool.
It fits the 1989-1992 Toyota Corolla, the 1993-1997 Toyota Corolla L4-1.6L, the 2003-2004 Mercury Marauder, the 1989-1992 Geo Prizm and the 1993-1997 Geo Prizm L4-1.6L. This listing is one hose, and the 2003-2004 Mercury Marauder takes one.
Fit and size
Build and materials
Interchange: 20268S · 21999 · 8678
This part cross-references / interchanges with the following part numbers:
Does the Dayco 71780 radiator coolant hose fit the 1993-1997 Toyota Corolla L4-1.6L?
Yes. Dayco 71780 is listed for the 1993-1997 Toyota Corolla L4-1.6L, and for the 1989-1992 Toyota Corolla.
Is there a Dayco radiator coolant hose for the 2003-2004 Mercury Marauder?
Yes. Dayco 71780 is listed for the 2003-2004 Mercury Marauder, which takes one hose.
Which SAE specifications are listed for this Dayco coolant hose?
Dayco 71780 is specified to SAE J20R4 Class D-1 and SAE J1684 Type EC. It is a single I.D. hose.
Does this radiator coolant hose have a protective sleeve or heat shield?
No. This hose is a plain single I.D. hose with no protective sleeve and no heat shield.
Which other part numbers match the Dayco 71780 hose?
The interchange numbers listed for it are 20268S, 21999 and 8678.
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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.
