Dayco 71109 radiator coolant hose for the 2001-2003 Thomas Saf-T-Liner and other vehicles carries engine coolant to and from the radiator. This Dayco coolant hose is listed for lower and upper positions, including pipe to radiator, pipe to engine and oil cooler to radiator.
Cracks, soft or swollen spots, or coolant stains at the hose ends can mean a radiator coolant hose is wearing out. Before you replace it, rule out a loose clamp, a leaking radiator or another connection as the source of the leak. If the hose is at fault, this one takes its place.
It is listed for a wide range of Thomas, Volvo, Ford, Chevrolet and GMC models, led by the 2001-2003 Thomas Saf-T-Liner, the 2000 Thomas School Bus and the 1992-1993 Volvo FE. The fitment covers the L6-6.6L, L6-7.2L, V8-6.1L, V8-7.0L and V8-8.2L engines. If your vehicle is not named here, look up its year and engine under the "Vehicles it fits" section.
Fit and size
Build and materials
One radiator coolant hose. A protective sleeve and a heat shield are not included. The listing is a single hose, and the fitment lists a quantity of one per vehicle.
Interchange: 20133S · 20172S · 21255 · 21473 · KM1043 · 7966 · 8188
This part cross-references / interchanges with the following part numbers:
Is Dayco 71109 the right radiator coolant hose for the 2000 Thomas School Bus?
Yes. Dayco 71109 is listed for the 2000 Thomas School Bus, with a quantity of one per bus.
Does the Dayco radiator coolant hose come with a heat shield or protective sleeve?
No. Dayco 71109 is a single hose and does not include a protective sleeve or a heat shield.
What is Dayco 71109 made of, and which SAE specs does it carry?
Dayco 71109 is an EPDM hose specified to SAE J20R4 Class D-1 and SAE J1684 Type EC. Its trunk height is 9 in.
How can I tell if this radiator coolant hose is worn out?
With the engine off and cool, look for cracks, soft or swollen spots and coolant stains at the ends of the hose. A shop can pressure-test the cooling system when the source of a leak is unclear.
Does Dayco 71109 cross-reference to part number 20133S?
Yes. 20133S is one of the cross-reference numbers listed for Dayco 71109.
No reviews yet — be the first to review this product.
Write a Review
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.
