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See part 235A in the diagram
Replacing your LG Refrigerator Door Mullion - Grey play video
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Door Mullion - Grey

★★★★★
★★★★★
47 Reviews

Rated by 8 customers 

Really Easy

15 - 30 mins

Ratings submitted by customers like you who bought this part.

Get this part fast! Average delivery time for in-stock parts via standard shipping: 1.8 days.

 Fits your LFX28978ST!
 Fits your LFX28978ST!
PartSelect Number PS4129907
Manufacturer Part Number AGU73530705
Manufactured by LG
Product Description

Door Mullion - Grey Specifications

This is a replacement mullion rail for your French door-style refrigerator. You will typically find the mullion rail on the left side refrigerator door. The mullion rail helps to keep the refrigerator door closed. If the door will not close properly or if you notice leaking on your floor, you may need to replace the door mullion. A faulty mullion can gather moisture, resulting in a leak. To replace the mullion, simply disconnect the old mullion from the wire harness and unscrew it. Re-attach the wire harness to the mullion and screw it back into place.
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Troubleshooting
This part fixes the following symptoms:
Door won’t open or close | Door Sweating
This part works with the following products:
Refrigerator.
This part works with the following products:
LG, Kenmore.
Part# AGU73530705 replaces these:
AP5644385
Questions and Answers

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25 questions answered by our experts.
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Wil
April 27, 2018
Hi, the spring that makes the door mullion stay in the closed position when the door opens is broken. I don't see a replacement, only the door mullion itself. Is the spring available? If no, does the door mullion come with the new spring? Thanks.
For model number LMX28988ST (00)
Hi Will, Thank you for your question. The spring is sold with the mullion. I hope this helps. Thank you and have a great day!

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Harsh
December 19, 2017
My refrigerator door latch is not working. Two of the springs have come out. I do have those springs but it looks like the part is broken where the spring can go. Can you help me with that?
For model number 79571063010
Hello Harsh, Thanks for your question. You may want to examine the door holders, part number PS3535435, for any signs of damage as well. The mullion is the part that the springs fit into, and the springs come with the mullion assembly. I hope this helps.

8 people found this helpful.

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Related Parts:
Richard Staudt
June 19, 2019
Spring is broken on door mullion. If i purchase replacement mullion does new spring come attached with it? Can i purchase additional springs for when the next one breaks?
For model number Sears Elite Refrig model 795.71033.010
Hello Richard, thank you for writing. This replacement Door Mullion for your model comes with the Spring. The Spring cannot be purchased separately.

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Joe
February 2, 2018
Hi i’m looking for the part that the mullion hangs on. It is a small piece of plastic set into the side of the inner door to the left/outside of the ice maker when the door is open. The top of my mullion pulls away because this piece has cracked. Thanks
For model number LFX21976ST
Hello Joe, Thank you for your inquiry. Those pieces of plastic are only sold as part of the door assembly for this model. Hope this helps!

5 people found this helpful.

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Al
March 3, 2020
Can i just buy the spring that opens and closes the mullion?
For model number 79571073010
Hello Al, thank you for your question. Unfortunately, for this unit the spring is only available by ordering the mullion assembly which is PartSelect Number PS4129907. I hope this helps.

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Scott
February 26, 2018
Do i need to by an entire mullion if all that is wrong is the heater doesn't work. No it is not set on energy saver.
For model number LFX25974ST
Hi Scott, Thank you for your question. Yes, you will need to replace the entire mullion. I hope this helps. Thank you and have a great day!

4 people found this helpful.

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Pinky
July 23, 2017
How to i remove cable on ice maker side of door to take door off
For model number 79571053010
Hi Pinky, Thank you for your question. Your wiring harness should be connected with a clip on the left hand side door of your refrigerator. You will see that there are two connection pieces clipped together. Hold each side, there is a release catch that you have to press down on the connector that is attached to the main body of the refrigerator. As you hold that release catch down you should be able to pull apart the connectors. I hope that helps!

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Nathan
October 25, 2017
The spring in the door mullion is the only part that is broken. Is there any way the spring can be sold separately? The part # for the entire mullion is ps4129907. Thanks!
For model number 79571053010
Hi Nathan, Thank you for the question. Unfortunately the spring on this model is only available as part of the mullion assembly. Good luck with the repair!

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Gary
October 21, 2019
My fridge is grey on the outside, and the mullion is white on the inside portion and grey where you can see it between the doors. Is this the right one or do you have a grey mullion?
Hi Gary, We would be happy to do some research to find you the correct parts. However, we need your model number and the brand name to locate any information on this. Model numbers can be short or long, and could have a mixture of numbers and letters. Thank you for your question and good luck with your repair!

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Deborah
November 16, 2019
I need this part in white. It did not give me that option.
For model number PS4129907
Hi Deborah, Thank you for your question. This would be the only mullion available. One side of this mullion is white and the other side is grey. I hope this helps. Thank you and have a great day!

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Part Videos

Replacing your LG Refrigerator Door Mullion - Grey

Replacing your LG Refrigerator Door Mullion - Grey play video
Customer Repair Stories
 Average Repair Rating: 4.1 / 5.0, 8 reviews. What's this?
    Sort by:
    Sorry, we couldn't find any existing installation instruction that matched.
    My nephew accidentally forced the door closed last year, which resulted in the door having to be re closed manually folding back the flap. Ugh!
    Unscered 2 screws, unplug electrical connection under the screws, slide her flap into grooves, realign screw holes , and rescrew in. Done.
    • Tiziana from WARWICK, NY
    • Difficulty Level:
      Really Easy
    • Total Repair Time:
      Less than 15 mins
    • Tools:
      Nutdriver
    21 of 31 people found this instruction helpful.
    Was this instruction helpful to you?
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    Broken spring door million torn door gasket
    Door million undid 2 screws in plug wire easy no need for directions. Gasket pull off old one fit New in with index finger no tools needed.
    Other Parts Used:
    GASKET ASSEMBLY,DOOR
    • GUY from HECTOR, NY
    • Difficulty Level:
      Very Easy
    • Total Repair Time:
      Less than 15 mins
    • Tools:
      Screw drivers
    5 of 6 people found this instruction helpful.
    Was this instruction helpful to you?
    Thank you for voting!
    Spring on old mullion fell out
    Replaced with new mullion
    • MIKE from ATLANTA, GA
    • Difficulty Level:
      Really Easy
    • Total Repair Time:
      Less than 15 mins
    • Tools:
      Screw drivers
    2 of 2 people found this instruction helpful.
    Was this instruction helpful to you?
    Thank you for voting!
    The spring on the mullion door broke for the last time
    This was an incredibly easy repair! 1 phillips screwdriver and two screws. Disconnect the small adapter, and you are good to go!
    • Sonya from VAIL, AZ
    • Difficulty Level:
      Really Easy
    • Total Repair Time:
      Less than 15 mins
    2 of 2 people found this instruction helpful.
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    Spring broke on Mullion
    Watched the video. Took the screws out, unplugged the connection and slid mullion off. Then plugged the new one in, slid it on and attached the two screws.
    • Michael from MONTGOMERY, AL
    • Difficulty Level:
      Very Easy
    • Total Repair Time:
      Less than 15 mins
    • Tools:
      Screw drivers
    2 of 3 people found this instruction helpful.
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    The spring on the mullion was broken so the mullion would not open to seal the other door.
    I am a73 year old woman. If I can do this, anyone can. Super easy. Just watch the online video.
    • JANET from GRAND JCT, CO
    • Difficulty Level:
      Very Easy
    • Total Repair Time:
      Less than 15 mins
    • Tools:
      Screw drivers
    1 person found this instruction helpful.
    Was this instruction helpful to you?
    Thank you for voting!
    Spring broken in door mullion
    Took 2 screws out and disconnect wire and install new part.
    • Wayde from SEMINOLE, FL
    • Difficulty Level:
      Really Easy
    • Total Repair Time:
      Less than 15 mins
    • Tools:
      Screw drivers
    1 person found this instruction helpful.
    Was this instruction helpful to you?
    Thank you for voting!
    cannot get water to the icemaker
    i changed the filter and was able to get water to the white coil at the bottom of the dispenser (left door) but could never get water to the icemalker.i also replaced the pump at the bottom of the door as well as the green ebr699172 dispenser electrical board.still can not get water to the icemaker.any help will be greatly appreciated.
    paul
    • PAUL from AMARILLO, TX
    • Difficulty Level:
      Very Difficult
    • Total Repair Time:
      More than 2 hours
    • Tools:
      Nutdriver
    1 person found this instruction helpful.
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      Customer Reviews
      Average Rating:
      ★★★★★
      ★★★★★
      47 Reviews
      4.7
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      Model Cross Reference
      This part works with the following models:
      PartSelect Number: PS4129907
      Manufacturer Part Number: AGU73530705
      Brand
      Model Number
      Description
      LG
      71033
      Refrigerator - LG Refrigerator Model 71033 Parts
      LG
      71036
      Refrigerator - LG Refrigerator Model 71036 Parts
      LG
      71053
      Refrigerator - LG Refrigerator Model 71053 Parts
      LG
      71063
      Refrigerator - LG Refrigerator Model 71063 Parts
      LG
      71073
      Refrigerator - LG Refrigerator Model 71073 Parts
      LG
      71093
      Refrigerator - LG Refrigerator Model 71093 Parts
      LG
      71606
      Refrigerator - LG Refrigerator Model 71606 Parts
      LG
      72033
      Refrigerator - LG Refrigerator Model 72033 Parts
      LG
      72036
      Refrigerator - LG Refrigerator Model 72036 Parts
      LG
      72303
      Refrigerator - LG Refrigerator Model 72303 Parts
      LG
      73033
      Refrigerator - LG Refrigerator Model 73033 Parts
      LG
      73133
      Refrigerator - LG Refrigerator Model 73133 Parts
      Kenmore
      79570323310
      Refrigerator - REFRIGERATOR
      Kenmore
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      Refrigerator - Refrigerator
      Kenmore
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      Refrigerator - Refrigerator
      Kenmore
      79571073013
      Refrigerator - Refrigerator
      Kenmore
      79572033112
      Refrigerator - REFRIGERATOR
      Kenmore
      79572036112
      Refrigerator - REFRIGERATOR
      Kenmore
      79573133410
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      Kenmore
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