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Heater Hose and Coolant Hose
Heater hoses are rubber hoses that circulate engine coolant to and from the heater core, which is the small radiator that provides heat for the cabin. The water pump sends coolant that’s been heated up by the engine to the heater core through the heater hoses. Heater hose runs from the water pump to the heater core, behind the firewall, and from the heater core back to the radiator. Without heater hoses, you’ve got no heat.
Coolant Hose is typically a rubber device that manages the coolant flow from an engine’s water pump to the heater. Coolant hose is an essential cooling system in your engine, which would not work without them. Engines produce a lot of heat and coolant hose carries the coolant through the engine at an optimal temperature, cool the engine. It would quickly destroy the engine if left the heat to build up in it.
When should coolant hose or heater hose be replaced?
It is very important to test periodically the condition of your heater hoses. Wait until your engine has a chance to cool and then feel your heater hoses. If the hoses do feel too hard or too soft or appear to be cracked, you should have your heater hoses replaced as soon as possible. Also, if you are experiencing poor cabin heating or your engine overheats often, inspect your heater hoses and have them replaced if necessary.
Coolant hoses carry coolant, or antifreeze, between the engine and radiator. Over time, the hose is exposed to high heat and, in some climates, freezing temperatures, too. To prevent a failure, replace your coolant hose to keep the cooling system operating correctly and to prevent your engine from overheating. If your car is over four years old, it may be time to replace your hose. If you do a lot of stop-and-go driving wear can occur even quicker. If a leak develops, you run the risk of overheating your engine and should replace the hose immediately.
This Heater Hose and Coolant Hose fits for the following vehicles:
2001-2005 BMW 320i Base Sedan 4-Door
1999-2001 BMW 323i Base Sedan 4-Door
2000 BMW 323i Base Wagon 4-Door
2001-2006 BMW 325ci Base Convertible 2-Door
2001-2006 BMW 325ci Base Coupe 2-Door
2001-2005 BMW 325i Base Sedan 4-Door
2001-2005 BMW 325i Base Wagon 4-Door
2000 BMW 328ci Base Coupe 2-Door
1999-2000 BMW 328i Base Sedan 4-Door
This Heater Hose and Coolant Hose fits for the following vehicles:
2001-2006 BMW 330ci Base Coupe 2-Door
2005 BMW 330ci M Convertible 2-Door
2005 BMW 330ci M Coupe 2-Door
2001-2005 BMW 330i Base Sedan 4-Door
2005-2005 BMW 330i M Sedan 4-Door
2001-2003 BMW 525i Base Sedan 4-Door
2001-2003 BMW 525i Base Wagon 4-Door
1996-2000 BMW 528i Base Sedan 4-Door
1999-2000 BMW 528i Base Wagon 4-Door
2001-2006 BMW X5 3.0i
This Heater Hose and Coolant Hose fits for the following vehicles:
2000-2000 BMW Z3 2.0iConvertible 2-Door
2001-2002 BMW Z3 2.2i Convertible 2-Door
1998-2000 BMW Z3 2.8i Convertible 2-Door
2001-2002 BMW Z3 3.0i Convertible 2-Door
1999-2002 BMW Z3 Coupe Coupe 2-Door
2000-2002 BMW Z3 M Coupe Coupe 2-Door
1998-1998 BMW Z3 M Roadster Convertible 2-Door
2000-2002 BMW Z3 M Roadster Convertible 2-Door
2003-2005 BMW Z4 2.5i Convertible 2-Door
2003-2005 BMW Z4 3.0i Convertible 2-Door
David mayle
Reviewed in the United States on January 31, 2025
Everything I expected works well
Julio Alvarado
Reviewed in the United States on April 22, 2025
Fits great. No leaks. I do not know the longevity as I only have about 500 miles with no issues. Price is very comfortable.
Jeffrey Shifflett
Reviewed in the United States on June 17, 2024
Good part
Noe Martínez
Reviewed in the United States on January 21, 2024
Excelente calidad
jesse
Reviewed in the United States on August 29, 2023
It helped me fix the issue but the orings/gaskets on the tips are the incorrect size . Had to get espérate ones
Kristi Neal
Reviewed in the United States on September 29, 2022
Perfect fit and great quality saved a nice penny
Paul E Huwa
Reviewed in the United States on September 19, 2021
The heater hose line is near impossible to get the 2nd bolt in and due to shape makes it impossible to bolt the electrical box into place
Rudy M De La Cruz
Reviewed in the United States on November 29, 2021
The hose was supposed to be hollow, had to cut it open to see that there was no opening at all.
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