Keep engine coolant moving between the engine and the heater core with this Dayco heater hose, part number 80402, a 90-degree molded coolant hose. It fits many vehicles, among them the 2009-2019 Toyota Corolla 1.6L / 1.8L, the 1994-2001 Dodge Ram 1500 3.9L / 5.2L / 5.9L and the 1994-2001 Dodge Ram 2500 5.2L / 5.9L. See the "Vehicles it fits" section for the full list.
- 90-degree molded shape: Dayco molds this coolant hose with a 90-degree bend rather than supplying it as straight hose.
- Inside diameter: .63 in at both End 1 and End 2.
- Centerline length: 18 in.
- Single hose: Sold individually. Country of origin: Pakistan.
The 80402 is listed as both a heater hose and an engine coolant bypass hose, and some shoppers search for it as an hvac heater hose. A heater hose carries hot engine coolant, so it is exposed to heat, pressure and underhood conditions. Signs a hose may need replacing include coolant seeping or dripping at the hose or its ends, visible cracks, swelling, a soft or spongy feel, or a coolant level that keeps dropping. Diagnose the source of a leak before replacing parts. When installing, follow the vehicle service information for draining, clamping, refilling and bleeding the cooling system.
Frequently Asked Questions
What does the Dayco 80402 heater hose do?
It carries engine coolant between the engine and the heater core. It is a 90-degree molded hose, so it comes shaped with its bend rather than as straight hose.
Which vehicles does the Dayco 80402 fit?
It fits many vehicles, including the 2009-2019 Toyota Corolla 1.6L / 1.8L, 1994-2001 Dodge Ram 1500 3.9L / 5.2L / 5.9L and 1994-2001 Dodge Ram 2500 5.2L / 5.9L. The "Vehicles it fits" section has the full list.
What are the dimensions of this hose?
The inside diameter is .63 in at both End 1 and End 2, and the centerline length is 18 in. The hose is molded with a 90-degree bend.
What comes in the package?
You get one single molded coolant hose, Dayco part number 80402. It is sold individually.
What are signs a heater hose may need replacing?
Watch for coolant seeping at the hose or its ends, cracks, swelling, a soft or spongy feel, or a coolant level that keeps dropping. Diagnose the leak source before replacing parts.
