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LiftMaster

LIFTMASTER Garage Door Openers 144C56 Chain Cable Idler Pulley, Black

Based on 2,726 reviews
Condition: New
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$6.99
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Availability: In Stock.
Fulfilled by The ROP Shop
Arrives Tuesday, Nov 3
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At a glance

Condition
New
Model
144C56
Weight
18.14 g
Color
Black
Material
Steel
Style
Classic

Features 1

  • Sold on Amazon

Description

LIFTMASTER Garage Door Openers 144C56 Chain Cable Idler Pulley, Black. Please review all product information to ensure that this product is compatible with your unit. Our staff constantly strives to provide clear and concise product information. We understand that sometimes it can be difficult to confirm product compatibility. It is your responsibility to confirm this is the correct product you need; therefore, we encourage all customers to fully review the information provided in this listing prior to purchase. Nothing is worse than having to return a product, trust us...we get it. Let's work together to avoid this! If you are unsure as to whether or not this is the correct product for your unit, please ask. If you seek assistance we will need as much of the following information as possible, if applicable, to help you find the product you are looking for: ▪ Model and/or Sub-model ▪ Spec and/or Type Number ▪ Code and/or Serial Number ▪ Year ▪ Engine Horsepower. Our knowledgeable product specialists are always willing to help you verify product fitment. Stay rugged, my friend.

Specs 15

Brand LiftMaster
Color Black
Material Steel
Style Classic
Item Weight 18.14 g
Brand Name LiftMaster
UPC 804075315089 804048474867 706177140838 351309371828 785971552818 640213238533
Global Trade Identification Number 33, 89, 64

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Nov 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

Good replacement part, but wanted a different solution
I bought this to replace the identical broken one on my brand new garage door opener. While the piece itself is fine, I wanted a longer term solution because judging on the reviews these just weren’t made to last for their intended purpose. My 5 star rating is based on the fact that this part is the actual replacement part. There is nothing wrong with it, it was just not built to last. The manufacturer should have made this a metal part to begin with. I purchased a different pulley made of different material that would hold up longer (2.5" Lifetime Pulley Nylon Sheave with .25 Inch ID Stainless Steel Bushing). I ended up using the other one and will keep this part in case that one breaks. I did have to purchase a 5/16” bolt, washer and nut to hold the pulley in place as the center diameter was smaller but so far so good. Just wanted to help some of you out who are having the same issues as me! ... show more
Reviewed in the United States on August 2, 2019 by Sarah S.
works fine with chamberlain
fit good works fine door working again
Reviewed in the United States on March 1, 2026 by handfree
Works as designed
An exact replacement for the idler pulley that had broken due to age (Original was over 15 years old). Installation is straight forward and easy with a couple of basic tools any handyman should own. The pulley is NOT intended to carry the weight of the garage door, as one reviewer implied. The pulley IS designed to guide the cable that is part of the drive chain that moves the trolley on the garage door opener. The weight of the garage door is solely carried by the springs and the door track. ... show more
Reviewed in the United States on August 24, 2025 by Ziplock
good product
I ordered this LIFTMASTER Garage Door Openers 144C56 Chain Cable Idler Pulley, Black after mine broke and I was unable to open and close my garage door. I wass looking for a replacement idler pulley for your LiftMaster garage door opener, and this 144C56 Chain Cable Idler Pulley might be the perfect fit. Made by LiftMaster, this pulley is designed to work with their Classic series garage door openers. The idler pulley is a needed component in the operation of your garage door opener. It helps maintain the tension of the chain or belt that lifts and lowers the garage door which mine was not doing at the moment. This particular pulley is made of durable plastic, which should provide long-lasting performance. Installing the pulley is a relatively simple process, but it's always a good idea to consult your garage door opener's user manual for specific instructions. You'll also want to make sure you have the proper tools on hand, such as a wrench and socket set. Overall, this LiftMaster 144C56 Chain Cable Idler Pulley is a high-quality replacement part that should help keep your garage door opener running smoothly. If you're experiencing issues with your current idler pulley, or if you simply want to replace it as part of regular maintenance, this pulley is definitely worth considering, but I suggest to order the metal one because the first one i ordered broke while it was installed. The second one worked better because I knew what I was doing...lol. ... show more
Reviewed in the United States on February 12, 2025 by Angie D
3rd pulley, I found that my installation was incorrect.
I have two garage doors, both using the same openers. One opener is still running on the original plastic pulley, the other one just had its 3rd pulley installed. I found that the pulley failure is my fault. When I installed the openers, I had to add an addtional kit for use on 10' tall doors instead of the standard 8' door. When I inserted the 2 foot rail extender, I failed to bend up the physical stop on the one unit, but I did bend it up on the other unit. The stop prevents the trolley from going too far and hitting the plastic pulley, which when it hits in the winter, the trolley breaks my pulleys. If your rail does not have the prong bent up towards 12:00 (the prong is located about 4 inches from the pulley on the top of the rail) you can bend it out with a flat screwdriver. If you find that yours is lying flat with the rail surface, this may be why your pulley has broken. The other thing I changed, was I increased the angle of the arm that connects the trolley to the door. When the garage door was in the closed position, the angle of the connecting arm was straight up and down which allowed the trolley to move too close to the pulley. I removed the two bolts that secure the two halves of the connecting arm together, increased the length of the connecting arm by about 4 inches, bolted it back together and reprogrammed my up and down stops at the power unit. Everything is working very well now, and the trolley does not even come close to the pulley any longer. ... show more
Reviewed in the United States on January 4, 2021 by JH
Opener pully
Easy to install. It would be great to be metal.
Reviewed in the United States on November 24, 2023 by cfarm2
Super
Product delivery was on time and is of excellent quality. The item is new and has been delivered in a timely manner. The appearance is very good and of great value.
Reviewed in the United States on March 16, 2025 by Amazon Customer
needs to be metal
I find it crazy you cant find this exact part in metal. why it has 3 stars. but it does work. but i know not forever.
Reviewed in the United States on July 25, 2025 by Aviatorfox14
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