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Heater Bypass Valve

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Replacement REPP383101 Heater Bypass Valve - Direct Fit
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$8.62
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Warranty : 1-year unlimited-mileage warrantyQuantity Sold : Sold individually
AC Delco 15-50419 Heater Bypass Valve - Direct Fit
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$83.28
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Warranty : 24-months or unlimited mile AC Delco limited warrantyAnticipated Ship Out Time : Same day - 1 business dayQuantity Sold : Sold individually
AC Delco 15-5551 Heater Bypass Valve - Direct Fit
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$55.87
Product Details
Warranty : 24-months or unlimited mile AC Delco limited warrantyAnticipated Ship Out Time : Same day - 1 business dayQuantity Sold : Sold individually
AC Delco 15-5557 Heater Bypass Valve - Direct Fit
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$59.85
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Location : RearWarranty : 24-months or unlimited mile AC Delco limited warrantyAnticipated Ship Out Time : Same day - 1 business dayQuantity Sold : Assembly
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Heater Bypass Valve Brands

Heater Bypass Valve Guides

Heater Bypass Valve Replacement: A Few Tips to Help You Out

The heater bypass valve is responsible for keeping your car interior warm even when it's freezing cold outside. Once this component breaks down, you won't be able to drive your vehicle through a wintry weather without your toes falling off because of the frostbite. There are many possible reasons why a heater bypass valve may get damaged including contamination and corrosion. Leaking coolant and malfunctioning heater are two of the most common symptoms of a faulty heater bypass valve. If you've recently observed these symptoms from your car, then you should replace the damaged component as soon as possible. Here's how:

Difficulty level: Moderate

Things that you'll need:

  • Screwdriver
  • Drain pan
  • Pliers
  • Coolant
  • Replacement heater bypass valve
  • Owner's manual

Step 1: Park your car and open its hood. When it comes to working with your vehicle's cooling system, it's extremely important that you let the coolant cool off to keep yourself from getting burned. While you're waiting for your car's engine to reach a safe temperature, you may also survey the area around you to ensure that there are no flammable materials, sparks, or flames.

Step 2: Once your car has sufficiently cooled down, you should drain the contents of the radiator. Place the drain pan underneath it before pulling off the petcock valve using your pliers.

Step 3: Locate the control arm inside the engine compartment. The heater control cable is connected to it through a clamp. You need to loosen the clamp in order to disconnect the cable from the control arm. If you're having trouble finding this component, you should refer to your owner's manual.

Step 4: Using a screwdriver, detach the hose clamps that are used to connect the inlet and outlet heater hoses to the heater bypass valve.

Step 5: Unplug the hoses from the heater bypass valve. Make sure that you do this with care! You wouldn't want to get these components damaged. It would be better if you inspect all of the heater hoses to verify if they're in good condition. Deteriorated ones must be replaced to avoid leakage.

Step 6: After you got all the necessary components out of the way, you should now be able to take the damaged heater bypass valve off the engine compartment.

Step 7: Place the new heater bypass valve on its mounting location. Make sure that it's properly aligned before you secure it into place.

Step 8: Attach the heater hoses and control cable to the new heater bypass valve. Don't forget to double-check if their clamps are properly tightened.

Step 9: Refill your vehicle's radiator with fresh coolant.

Step 10: Switch your engine on and let it run for a few minutes. Check if the heater of your car is now properly warming up its interiors.

Replacing a damaged heater bypass valve may take an expert mechanic around one hour to finish. For novice DIYers, expect to get this task done in about one hour and a half. Remember to practice the required safety precautions to avoid any accidents.

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