Vacuum Bypass Closes Heater Valve
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CARQUEST Vacuum Bypass Closes Heater Valve

Part No. 74809 Warranty Details  
$19.39
Quantity  Add to Cart

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Please note: Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications.

Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Factory Air.

Product Features:
  • Temperature tested to 270 degrees F
  • Pressure tested to ensure leak free design
  • Vacuum controlled
  • Application specific design
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Fitting Size:5/8 x 5/8 x 5/8 x 5/8 in
Hose #1 Size:.625 in
Hose #2 Size:.625 in
Material:Plastic
Operation Type:Vacuum Closes, Bypass
Type:Vacuum Closes, Bypass

REVIEW SNAPSHOT®

by PowerReviews
CARQUEST or Factory AirVacuum Bypass Closes Heater Valve
 
2.5

(based on 20 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (9)

39%

of respondents would recommend this to a friend.

Pros

  • Easy to install (11)
  • Lightweight (5)

Cons

  • No improvement in performance (3)

Best Uses

  • Everyday driving (8)
  • Replacement (8)
    • Reviewer Profile:
    • Auto enthusiast (6), Casual driver (5), Mechanic (5), Truck enthusiast (3)

Most Liked Positive Review

 

Replacement part for my 97 Explorer

My truck couldn't run safely without this piece. We couldn't figure out why the radiator was always bone dry and the truck was always overheating. We found that the original piece was split and...Read complete review

My truck couldn't run safely without this piece. We couldn't figure out why the radiator was always bone dry and the truck was always overheating. We found that the original piece was split and draining water every time the engine ran, so much that it would drain 3 gallons of water in less than 30 minutes. We got the replacement part, and after a 7 minute installation, the truck is running smoother and keeping the water where it belongs. This is a necessary piece, don't bother trying to fix the old one temporaroly, just get a new one that will work for a long while.

VS

Most Liked Negative Review

 

Failed Twice in 1 Month

The product is an exact fit for my 1997 Ford Ranger XLT V6 and looks identical to the original part. However, the part failed twice in less than one month. The first one...Read complete review

The product is an exact fit for my 1997 Ford Ranger XLT V6 and looks identical to the original part. However, the part failed twice in less than one month. The first one began leaking 3 days after installation. The second began leaking 2 weeks after installation. In both cases, it leaked at the point where the metal valve shaft enters the housing. I decided to switch to Motorcraft OEM and found the part online for $24 shipped.

Reviewed by 20 customers

Displaying reviews 1-10

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1.0

Heater valve is absolute junk

By 

from Spokane, WA

About Me Auto Enthusiast

Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

I have a 1995 Ranger 4.0 liter and I have replaced the heater valve almost more times than I have changed oil. These valves are absolute junk. The only guarantee they carry is that you will be replacing it again very soon!!!

(1 of 1 customers found this review helpful)

 
1.0

cheap price but part failed on me in less then a week

By 

from Kentucky

About Me Auto Enthusiast, Mechanic, Truck Enthusiast

Pros

    Cons

      Best Uses

      • Replacement

      Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

      I installed this part and within a week it was leaking antifreeze from the bottom of it and needed replaced again. Not a quality built part at all, I would stay away from the factory air brand.

      (6 of 14 customers found this review helpful)

       
      3.0

      lasted about 4 months

      By 

      from Maryland

      See all my reviews

      Helpful Reviewer

      Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

      This part was easy to install, but only lasted about 4 months. Leaks out of the hole where the metal rod goes through and turns. All of them are made of plastic, even motorcraft. wish they made these of metal.

      (7 of 13 customers found this review helpful)

       
      4.0

      Good replacement for factory original

      By 

      from Billerica, MA

      About Me Mechanic

      See all my reviews

      Verified Buyer
      Helpful Reviewer

      Pros

      • Easy To Install

      Cons

        Best Uses

        • Everyday Driving
        • Replacement

        Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

        I was a little hesitant to use this part because I had seen some poor reviews on it. The original was leaking and it's been about 3 weeks since installing the replacement and so far so good. It works as it should and there are no leaks so for now I'm perfectly satisfied. The Ford original part was close to 3 times the price so considering it is very accessible and easy to change, I was fine with giving this part a shot even though there were some poor reviews. It's got a lifetime warranty so the worst case scenario is that it fails prematurely and I have to spend another 15 minutes to pop in a warranty replacement.

        (3 of 9 customers found this review helpful)

         
        2.0

        very easy to change

        By 

        from Ohio

        About Me Casual Driver

        Verified Buyer
        Helpful Reviewer

        Pros

        • Easy To Install

        Cons

          Best Uses

            Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

            Can be changed in about 10 minutes, with just a pair of Pliers. Changed 2 in just the last month.

            (8 of 16 customers found this review helpful)

             
            3.0

            It will do

            By 

            from Indiana

            About Me Auto Enthusiast, Casual Driver

            See all my reviews

            Verified Buyer
            3 or more reviews submitted

            Pros

            • Easy To Install
            • Lightweight

            Cons

            • Kinda Cheap

            Best Uses

            • Everyday Driving
            • Replacement

            Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

            Had to replace my valve after getting stuck in the snow because while getting unstuck the old one blew apart! I got this one it's made out of plastic and pretty much was the same as the factory one. It was easy to put on. It's been on for about a month or a little more now. It seems to work ok but a week back I thought I seen it leaking around the new valve. I haven't lost any fluid really but I am going to keep a eye on it and wait and see. It's a ok replacement wish it could have been a little bit stronger. But it will do I guess.

            (7 of 14 customers found this review helpful)

             
            1.0

            Leaks

            By 

            from the Florida panhandle

            About Me Semi-professional

            Helpful Reviewer

            Pros

              Cons

              • Leaks

              Best Uses

                Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

                Custom installed this on our Mazda5 last summer (2012) with an electronic vacuum controller to help the efficiency of our a/c system. Had it configured to bypass heater core at about 80* ambient. Now replacing with number 3, but this time it will be a genuine Motorcraft YG350.

                (6 of 11 customers found this review helpful)

                 
                1.0

                Defective Plastic Part

                By 

                from Colorado

                About Me Truck Enthusiast

                Pros

                • Easy To Install

                Cons

                  Best Uses

                    Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

                    This item has failed again at the end seam! Obviously a defective manufacture! I purchased this item to replace the original that failed after 16 years. The vehicle has been over-heating for sometime, because of loss of coolant. Yet again I find that the same part has failed! I will try another supplier for this item. I hope Advance Auto will find a better item to sell in place of this manufacturer!!!

                    (5 of 9 customers found this review helpful)

                     
                    5.0

                    Heater control valve

                    By 

                    from Gainesville, FL

                    About Me Auto Enthusiast, Mechanic

                    Verified Buyer
                    Helpful Reviewer

                    Pros

                    • Easy To Install
                    • Just like oem
                    • Lightweight

                    Cons

                      Best Uses

                      • Replacement

                      Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

                      Fits just like an OEM.

                      (9 of 18 customers found this review helpful)

                       
                      5.0

                      Perfect fit for my 98 Ford Ranger

                      By 

                      from Mansfield, Ohio

                      About Me Auto Enthusiast, Casual Driver, Truck Enthusiast

                      See all my reviews

                      Ask me a question

                      3 or more reviews submitted

                      Pros

                      • Durable
                      • Easy To Install
                      • Lightweight

                      Cons

                      • none

                      Best Uses

                      • Everyday Driving
                      • Performance Driving
                      • Replacement

                      Comments about CARQUEST or Factory Air Vacuum Bypass Closes Heater Valve:

                      My valve lost compression, and this replacement was what I needed. It is a perfect fit for my 98 Ford Ranger, and intallation was a breeze. My heat is hotter then ever now.

                      Displaying reviews 1-10

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                      Do you have questions about this product?

                       

                      Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                      10 Questions | 13 Answers
                      Displaying questions 1-10
                      • Q:

                        do i have to replace the heat control valve or can i simply bypass it?
                        Asked on 5/11/2012 by Anonymous

                        1 answer

                        • CUSTOMER CARE

                          A:

                          The hoses are simply connected to the stock one. You can remove it and reconnect them to the new control valve. For any further assistance, please call us toll free at: 1-877-ADVANCE (238-2623) and one of our representative would be glad to assist you further.

                          Answered on 5/13/2012 by John the Car-Doc from AAP
                      • Q:

                        what size hose fits this part
                        Asked on 1/9/2012 by Anonymous

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Below is the Factory air valve hose size
                          Hose #1 Size:.625 in
                          Hose #2 Size:.625 in

                          Answered on 1/11/2012 by Steve from AAP
                      • Q:

                        07 Ranger with no heat. AC works fan works when switched to heat no heat. Was told it was the acuator valve. Is this the same valve?
                        Asked on 12/8/2011 by mudman from North Carolina

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Yes, this is the heater control valve. In order to check the exact fit application, please provide the sub model of the vehicle.

                          Answered on 12/8/2011 by Vincent from AAP
                      • Q:

                        I owned a 1996 Ford Ranger XL extended cab. Engine size 2.3

                        A reputable auto care company told me I needed to replace this part asap. It will cost me a lot for parts and labor. I am not a mechanic but would like to do it myself. How difficult is it to replace this part? Does it require disconnecting a lot of things under the hood? Will I lose all of the antifreeze when I replace the value? The car place told me I needed to do get a coolant system service done immediately after I replace the valve. installed.

                        Asked on 8/7/2011 by Anonymous
                        Asked on 8/9/2011 by Anonymous

                        2 answers

                        • CUSTOMER CARE

                          A:

                          For help with your project, I recommend purchasing a Haynes repair manual specifically for your vehicle. This should be able to assist you further into detail on how to repair or replace specific parts.

                          Answered on 8/11/2011 by Steve from AAP
                        • A:

                          On my Ranger with a 3.0 engine all that is needed is to unclamp 4 hoses, and install the part. You may lose a small amount of antifreeze while installing the valve but this should only amount to about a cup or so out of about a gallon which can then v=be easily replaced. Replace the valve as not doing so will cause you to lose a large amount of antifreeze and could possibly lead to other problems. As far as having a coolant service done afterwards, only if you are due for that service in your regular maintenance, or if the leak persists.

                          Answered on 11/8/2011 by Steve from Muncie
                      • Q:

                        A reputable auto care company told me I needed to replace this part asap. It will cost me a lot for parts and labor. I am not a mechanic but would like to do it myself. How difficult is it to replace this part? Does it require disconnecting a lot of things under the hood? Will I lose all of the antifreeze when I replace the value? The car place told me I needed to do get a coolant system service done immediately after I replace the valve. installed.
                        Asked on 8/7/2011 by Anonymous

                        2 answers

                        • CUSTOMER CARE

                          A:

                          If you could please provide the year, make, model and engine size of the vehicle and we would be better able to assist you.

                          Answered on 8/9/2011 by Steve from AAP
                        • A:

                          no they are really easy

                          Answered on 5/6/2012 by RDH0418@yahoo.com from Aurora, CO
                      • Q:

                        can this be hooked up the wrong way ?
                        Asked on 1/9/2011 by TZ from Atlanta GA

                        2 answers

                        • CUSTOMER CARE

                          A:

                          I'm pretty sure it can be having four connection locations

                          Answered on 1/11/2011 by Mike the Auto Parts Master from AAP
                        • CUSTOMER CARE

                          A:

                          Yes, this can possibly be hooked up the wrong way. I would recommend purchasing a Haynes repair manual specifically for your vehicle. This should be able to assist you further into detail on how to repair or replace specific parts.

                          Answered on 1/11/2011 by Ron the Auto Parts Rebel from AAP
                      • Q:

                        my temperature control switch stays on cold will not switch to heat has a clicking noise under dash what could be problem when you turn switch to the heat side
                        Asked on 11/26/2010 by george from drummonds tn

                        1 answer

                        • CUSTOMER CARE

                          A:

                          With out the presence of your vehicle we would not be able to properly diagnose it nor provide you with a 100% answer. We would suggest taking your vehicle to a certified mechanic for a proper diagnosis before buying and having parts installed that may not solve or be the problem.

                          Answered on 12/1/2010 by Ron the Auto Parts Rebel from AAP
                      • Q:

                        Where is this part located? I have a 95 3.0L
                        Asked on 10/3/2010 by buddy from salem,ct

                        1 answer

                        • CUSTOMER CARE

                          A:

                          For further assistance, please provide the make and model of your vehicle.

                          Answered on 10/4/2010 by Mike the master of auto parts from AAP
                      • Q:

                        where does the vacume line hoke to this valve, because I replace this valve on my truck because I was not getting any heat inside now I am getting to much heat inside I cannot turn it down with the heat control knob.
                        Asked on 3/30/2010 by Jimmy from Clinton North Carolina

                        1 answer

                        • A:

                          The vacuum line connects to the round can on the right side of the valve. Be sure nothing is interfering with the actuator arm on the valve that would not allow it to move, or it could be a bad vacuum line or heat control knob in the truck.

                          Answered on 4/28/2010 by Dennis from IN
                      • Q:

                        will this item keep you from having heat inside the vehicle?
                        Asked on 12/12/2009 by mule from quincy illinois

                        1 answer

                        • CUSTOMER CARE

                          A:

                          Yes this heater control valve could keep you from having heat inside the vehicle if it is bad.

                          Answered on 2/4/2010 by Kevin from AAP
                      Displaying questions 1-10

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