BMW 51378123234 Rear Door Window Regulator Motor Right 840I 850I

( Manufacturer Part Number: 51378123234 ), ( Type: Window Regulator ), ( Country Of Origin: Germany ), ( Placement On Vehicle: Rear, Right )

Review BMW Tested Rear Door Window Regulator Motor Right Oem fits E31

The BMW E31 840i and 850i Rear Door Window Regulator Motor (BMW Part Number: 51378123234) is a crucial component responsible for the smooth and efficient operation of the rear window in your BMW E31 8-Series. This motor is specifically designed for use in the right rear door of the vehicle.

This high-performance window regulator motor is engineered with precision to ensure a perfect fit and seamless integration into your BMW. It features a robust and durable design, with a high-quality motor that delivers consistent power to operate the window glass up and down with ease. The motor is also designed to be quiet in operation, minimizing any unwanted noise during window movement.

The BMW 51378123234 motor is engineered to meet the stringent quality standards of BMW, ensuring reliable and long-lasting performance. It is manufactured using top-grade materials, including corrosion-resistant components to protect against the elements and ensure a long service life.

Installation of the new window regulator motor is a straightforward process, making this an ideal solution for DIY enthusiasts or those looking to save on labor costs. The motor comes complete with all necessary hardware, making it a true plug-and-play replacement.

By choosing the BMW E31 840i and 850i Rear Door Window Regulator Motor (Part Number: 51378123234), you can restore the functionality of your BMW's rear window and enjoy the confidence that comes with knowing you're driving a vehicle with genuine BMW replacement parts. This motor is a cost-effective investment in the longevity and performance of your BMW E31 8-Series.

Buying BMW E31 (840i, 850i) Rear Door Window Regulator Motor: A Comprehensive Analysis

The BMW E31, which includes the 840i and 850i models, is known for its luxury and performance. However, like any other vehicle, it requires regular maintenance and potential replacement of parts, such as the rear door window regulator motor. In this analysis, we will discuss the pros and cons of buying a new BMW E31 rear door window regulator motor.

1. Enhanced Convenience: A new rear door window regulator motor ensures smooth operation of the power windows.

2. Improved Functionality: The new motor can address existing issues, such as jammed windows, slow response, or erratic movement.

3. Longer Lifespan: A new motor is designed to last longer than a used or worn-out one, potentially saving you from future replacement costs.

4. Peace of Mind: A new motor comes with a warranty, providing you with added protection against manufacturing defects or malfunctions.

1. Cost: Replacing a rear door window regulator motor can be an expensive endeavor, especially for a BMW model.

2. Labor Costs: The installation of a new motor requires professional assistance, adding to the overall cost.

3. Availability: Depending on the availability of the specific motor for your BMW E31 model and year, you may face a lengthy wait for the part.

The decision to buy a new BMW E31 (840i, 850i) rear door window regulator motor depends on several factors, including the current condition of your vehicle, your budget, and your preference for convenience and peace of mind. If you frequently use the power windows, experience issues with the existing motor, or want to ensure the long-term reliability of your vehicle, investing in a new motor may be a worthwhile investment. However, if the cost is a concern, and the existing motor is functioning adequately, you may choose to delay the replacement.

If you are experiencing issues with the power windows in your BMW E31 (840i, 850i) and the motor is causing inconvenience or impacting the functionality of your vehicle, it's recommended to consider replacing the rear door window regulator motor with a new one. The investment in a new motor can provide you with the peace of mind that comes with a functional and reliable power window system. However, if the existing motor is working satisfactorily, it might be more cost-effective to delay the replacement. Always consult with a trusted BMW mechanic to assess the condition of the motor and provide you with an accurate diagnosis and recommendation.

Details:

Condition is Used. TESTED BMW E31 840I 850I REAR DOOR WINDOW REGULATOR WITH MOTOR RIGHT OEM. Shipped with USPS Ground Advantage.

part #: 51378123234 prices

• $206.91-$289.00

specifications wimotpa:

• for models: E31
• for makes: Bmw
• mpn: 51378123234
• type: Window Regulator
• country of origin: Germany
• placement on vehicle: Rear, Right

payments wimotpa:

• wallet: Apple-pay
• cash
• credit card: Visa
• other

shipping wimotpa:

• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS
• class: Standard, Expedited
• type: Calculated
• cost: $25.08
• transit: 4-9 Days

general wimotpa:

• Car Truck Parts Accessories > Interior Parts Accessories > Window Motors Regulators
• condition: Used

returns wimotpa:

• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

offer wimotpa:

• options: Ship-to-home
• availability: In Stock
• best offers: True
• sold: 0
• started: April 4, 2026
• quantity: 1

seller wimotpa:

• # reviews: 682
• city: Glendale, California
• rating: 99.0%

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