Window Regulator Compatible with 06-12 BMW 3 E90 E91 - Rear Left

In this review the focus is a direct-replacement rear left driver side window regulator with motor for 2006-2012 BMW 3 Series E90 and E91 models. The bottom line: it is a solid, budget-friendly replacement for owners who need a reliable, quiet lift mechanism and a straightforward swap with the original connector. The reviewer found the unit offers smooth motion and good fitment, and will suit DIYers and independent shops looking to restore a malfunctioning rear window without paying dealer prices.

Key Features

• Smooth, precision, silence: The assembly runs quietly and moves the window with steady, responsive action that helps keep the glass sealed against drafts and water.
• Superior material structure: A strong metal lifting bracket and thickened steel cable improve durability and reduce the chance of pull-through or breakage under normal use.
• Perfect compatibility: Designed to match 2006-2012 BMW 3 E90 and E91 models so the unit fits the rear left driver side without modification.
• Ideal replacement: Direct alternative to OE part numbers listed with matching form factor for a seamless replacement experience.
• Easy DIY installation: Plug-and-play electrical connector and matching mounting points let most owners complete the swap without splicing wires or new brackets.

Who It's For

This regulator is best for BMW 3 Series owners who need a cost-effective, functional replacement for a failed rear left window motor/regulator and who are comfortable performing a door panel removal and straightforward install. Independent mechanics and DIYers will appreciate the direct-fit approach and the included motor and regulator assembly.

It may be less suited for buyers demanding factory-new OEM lifetime robustness; a few user reports cite mixed long-term sturdiness and one instance of motor failure after several months, so those who need the absolute longest warranty-backed service might prefer an alternative with extended support.

Pros & Cons

Pros

• Good functionality with smooth, quiet operation that restores normal window movement.
• High fit accuracy for listed BMW E90/E91 models, reducing installation headaches.
• Strong metal bracket and reinforced cable construction increase expected longevity over cheaper alternatives.

Cons

• Sturdiness received mixed feedback from customers, including at least one report of motor failure within months.

Specifications

Product type	Electric power window regulator with motor
Fitment	2006-2012 BMW 3 Series E90 E91 rear left driver side
Included parts	Regulator assembly with motor (complete)
OE equivalents	51357140589, 748-468, BM1550111, 67626927025, 742-456
Construction	Metal lifting bracket with thickened steel cable and capped ends
Installation	Plug-and-play electrical connector, no wiring splice required

Our Verdict

The window regulator offers strong value for BMW 3 Series owners who need a dependable, quiet rear left regulator that fits directly and installs with minimal fuss. It pairs solid materials and good functionality with an economical price, making it the right choice for DIY repairs or cost-conscious shops, while buyers seeking extended OEM-level longevity should weigh the mixed long-term reports.

Frequently Asked Questions

Will this fit my 2008 328i sedan?
Yes, the unit is listed as compatible with 2007-2011 328i sedan rear left driver side and will fit when your vehicle matches those model years.

Does installation require splicing wires?
No, installation uses the original-style plug-and-play electrical connector so no wire splicing is necessary.

Are replacement parts included if a cable or motor fails?
This product ships as a complete regulator and motor assembly; individual warranty or replacement options depend on the seller's policy and quality checks prior to shipment.