What is a bypass heater hose?

A bypass heater hose is part of your vehicle's heating system. It helps regulate the flow of hot coolant to and from the heater core, which is what generates heat for your cabin.

What material is this hose made from?

This hose is constructed from a heat-resistant EPDM rubber compound, which is designed to withstand the high temperatures of engine coolant and the underhood environment.

Does this hose come with new clamps?

This product includes the molded heater hose only. It does not come with new hose clamps, so you will need to reuse your existing clamps or purchase new ones separately.

2007-2009 Mazda 3 Heater Hose | Gates 18369

Name: Gates 07-09 Mazda 3 4-Cyl. 2.3L By Pass Molded Heater Hose
Brand: Gates
SKU: gates-gates-07-09-mazda-3-4-cyl-2-3l-by-pass-molded-heater-hose-t14-875947
Price: 40.06 USD
Availability: InStock

Gates 07-09 Mazda 3 4-Cyl. 2.3L By Pass Molded Heater Hose

$40.06

In Stock

Fits 2007-2009 Mazda 3 2.3L 4-Cyl. This is a Gates bypass molded heater hose.

Key Features

Fits 2007-2009 Mazda 3 and 2007 Mazda CX-7.
Designed for the 2.3L 4-Cyl. engine application.
Molded construction ensures a direct fit for easier installation.
Made with heat-resistant EPDM rubber for durability.
Replaces the original bypass heater hose.

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Will it fit your car?

Fits these vehicles

Mazda 3 2007-2009
Mazda CX-7 2007

Product Details

This is a Gates molded heater hose specifically for the bypass circuit on your 2007-2009 Mazda 3 with the 2.3L 4-cylinder engine. Heater hoses are crucial for your car's comfort, carrying hot coolant from the engine to the heater core inside the cabin, and then returning it. When one of these hoses starts to fail, you might notice coolant leaks around the firewall or a lack of heat in your car.

Gates makes this hose from a heat-resistant EPDM rubber compound, which is built to handle the constant exposure to hot coolant and the underhood temperatures. It's molded to the exact shape needed for your specific application, meaning it should fit right without a lot of fuss during installation. This bypass hose connects to the heater core and helps regulate coolant flow for your heating system.

When you're replacing heater hoses, it's often a good idea to check the condition of the other hoses in the cooling system, as well as the clamps. This Gates hose is a solid option to get your Mazda 3's heating system back in working order.