What does a heater outlet hose do?

The heater outlet hose carries hot coolant from the engine to the heater core inside your vehicle's cabin. The heater core then transfers that heat to the air blown by your climate control system, warming the interior.

How do I know if my heater hose needs replacing?

Signs of a failing heater hose include a lack of cabin heat, visible leaks or puddles of coolant under the vehicle, or a sweet smell from burning coolant. You may also see cracks or bulges on the hose itself.

Does this hose come with clamps?

This Gates heater outlet molded coolant hose (Part# 24478) does not include installation clamps. You will need to reuse your original clamps or purchase new ones separately.

Gates 2014 Chevrolet Silverado V-8 5.3L Heater Outlet Molded Coolant Hose

Specifications

Brand: Gates
Part #: 24478
UPC: 00770075692508

Gates 2014 Chevrolet Silverado V-8 5.3L Heater Outlet Molded Coolant Hose

Name: Gates 2014 Chevrolet Silverado V-8 5.3L Heater Outlet Molded Coolant Hose
Brand: Gates
Price: 65.51 USD
Availability: InStock

$65.51

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2014-2016 Chevrolet Silverado 1500. This Gates heater outlet hose replaces a worn or leaking hose to restore proper cabin heat.

Key Features

Fits 2014-2016 Chevrolet Silverado 1500 and 2014-2016 GMC Sierra 1500 with 5.3L V-8 engine.
Direct fit molded design follows the original equipment routing for straightforward installation.
Constructed with durable rubber compounds resistant to heat and coolant degradation.
Helps restore proper cabin heat by ensuring consistent coolant flow to the heater core.

Secure CheckoutFast Shipping631-982-0042

Fits these vehicles

Chevrolet Silverado 1500 2014-2016
GMC Sierra 1500 2014-2016

Product Details

When your Chevrolet Silverado 1500 is blowing cold air even though the engine is warm, a cracked or leaking heater outlet hose could be the culprit. This molded coolant hose from Gates is specifically designed to replace the original on your 2014-2016 Silverado with the 5.3L V-8 engine, ensuring a direct fit and proper coolant flow to your heater core.

Gates uses durable rubber compounds that are resistant to heat and coolant degradation, which helps this hose stand up to the demanding environment under your hood. Its molded shape means it follows the factory routing precisely, making installation straightforward without needing to fight a stiff, universal hose. This helps prevent kinks and ensures consistent coolant delivery, which is key for getting your cabin heat back to normal.

Replacing a heater hose is a common maintenance task, especially on vehicles around this age. Having the correct molded shape makes the job much easier than trying to adapt a generic hose. Make sure to check your other coolant hoses while you're in there, as they can often be nearing the end of their service life too.