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Garage Door Openers 41B4103 Tensioner Assembly

Q: What is the best way to install this device? The one I have flew off tonight and I'm not sure which end screws on to the trolley screw.

The hex end screws on to the trolley shaft. The square end is for releasing the spring.

Q: Does the kit include the bolt that the tensioner attaches to?

No. The only item that is included is the tensioner itself.

Q: How long is the spring when expanded & operational. I had to remove mine, and need to compress it back

Don’t try and reset the old one. Replace it with is new one for $4.33. P/N. 41B4103

Q: Does this part need to be greased?

No, it does not. It comes with an oily film on the part and needs no more lubrication.

Product ID: 365977521

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🔧Universal fit for all belt drive models

⚙️Precision-engineered tension control

🛠️Durable, lightweight design (41g)

Frequently Bought Together

LIFTMASTER Garage Door Openers 41B4103 Tensioner Assembly

LIFTMASTER Garage Door Openers 109B18 Inner Trolley Shaft by LiftMaster

LiftMaster 4A1008 Masterlink Garage Door Opener Link Kit

Description

⚙️ Elevate your garage game with precision tension mastery!

EASY INSTALLATION - Designed for quick, hassle-free replacement to get you back on track fast
LIGHTWEIGHT DURABILITY - At just 41 grams, engineered for long-lasting performance without added bulk
SEAMLESS COMPATIBILITY - Fits all LiftMaster belt drive openers for effortless integration
PRECISION TENSION CONTROL - Ensures smooth, whisper-quiet garage door operation every time
TRUSTED LIFT MASTER QUALITY - Backed by a leading brand known for reliability and innovation

The LiftMaster 41B4103 Tensioner Assembly is a lightweight, durable replacement part designed specifically for all LiftMaster belt drive garage door openers. Engineered for precise tension control, it ensures smooth and quiet door operation, offering easy installation and trusted brand reliability.

Specifications

Manufacturer	LiftMaster
Part number	41B4103
Item Weight	41 g
Package Dimensions	18.69 x 14.6 x 2.39 cm; 41 g
Item model number	CECOMINOD028913
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

What is the best way to install this device? The one I have flew off tonight and I'm not sure which end screws on to the trolley screw.

Does the kit include the bolt that the tensioner attaches to?

How long is the spring when expanded & operational. I had to remove mine, and need to compress it back

Does this part need to be greased?

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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