• Usually Ships Following Business Day
  • MSRP: $201.52
    $183.20
    (You Save $18.32)
LiftMaster

LiftMaster 41D794 Motor with Positioning Sensor

SKU:
41D794
MSRP: $201.52
$183.20
(You Save $18.32)
  • Usually Ships Following Business Day
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The LiftMaster 41D794 Motor with Positioning Sensor is a genuine OEM replacement motor assembly designed specifically for compatible LiftMaster 3850 belt drive garage door openers. Featuring a powerful and ultra-quiet 3/4 HP DC motor, this replacement unit helps restore smooth, reliable operation while maintaining the performance and safety features of your garage door system.

Engineered for quiet operation, the 41D794 utilizes a belt drive system and an enclosed gear case with continuous lubrication for long-lasting durability. The integrated positioning sensor works with the opener's control system to provide accurate door travel monitoring and enhanced safety performance.

This motor assembly is also compatible with Chamberlain Group backup battery systems, allowing continued garage door operation during power outages.

Key Features

  • Part Number: 41D794
  • Type: Motor assembly with integrated positioning sensor
  • Motor Output: 3/4 HP DC motor
  • Drive System: Belt drive for smooth, quiet performance
  • Compatibility: LiftMaster Model 3850 garage door openers
  • Safety Feature: Integrated positioning sensor for accurate door monitoring
  • Gear Case: Permanently lubricated enclosed design
  • OEM Quality: Genuine LiftMaster replacement component

Battery Backup Compatibility

  • Compatible with Chamberlain Group battery backup systems
  • Supports up to approximately 40 open/close cycles within a 24-hour period during power outages
  • Helps maintain access to your garage when utility power is unavailable

Benefits

  • Restores factory-level opener performance
  • Provides smooth and ultra-quiet operation
  • Enhances safety through precise door position monitoring
  • Helps reduce wear on drive system components
  • Supports reliable operation during power outages when paired with a backup battery
  • Built for long-term durability and dependable daily use

Common Signs a Motor Replacement May Be Needed

  • Motor runs but door fails to move properly
  • Intermittent or inconsistent opener operation
  • Unusual motor noise or vibration
  • Positioning or travel limit errors
  • Loss of lifting power or sluggish door movement