A-Premium Rear Driver-Side Power Window Regulator for BMW E90/E91 (2007+) — Without Motor, OE-Style Fit

A-Premium's rear driver-side power window regulator (without motor) is a direct OE-style replacement made to restore smooth, reliable window operation on compatible BMW E90/E91 sedans and wagons.

If your rear left window drops, jams, or moves unevenly, replacing the regulator mechanism is often the necessary repair. This A-Premium unit is built to match original equipment fit and function for many 2007-on BMW E90 and E91 models, providing the mechanical rail, cable and mounting points while allowing reuse of your existing motor where applicable.

Which BMWs will this rear left regulator fit?

This part is designed for BMW E90 and E91 chassis configurations in sedan and station wagon body styles from 2007 onward. It fits a range of engine variants where the rear left (driver-side) regulator shares the same mounting and cable layout.

• Compatible models: 323i, 325i, 325xi, 328i, 328i xDrive, 330i, 330xi, 335i, 335xi, and M3 (from 2007+)
• Location: Rear left (driver side) only — not universal for front or right-side doors
• Body styles supported: Sedan and Station Wagon (E90/E91)

How does this regulator replace the original part?

The A-Premium regulator is manufactured as an OE-style replacement that mirrors the original assembly's mounting points, cable routing and sliding mechanism. It arrives without the motor so you can transfer the existing motor or purchase one separately.

• OE replacement design for direct fit and simplified installation
• Retains original attachment locations and cable guides
• Compatible with the factory motor interface when reusing the original motor

What are the reference numbers and part identifiers to check?

Before ordering, confirm your existing regulator or parts list against the common reference numbers to ensure compatibility. Matching these IDs reduces returns and ensures a correct fit for the rear left position.

• Common reference numbers: 51357140589, BM1550111
• Manufacturer cross-references: 749-468 and WR49468
• Verify against your vehicle’s service manual or the part stamped on your old regulator

What should I expect during installation and what tools are needed?

Installation typically involves removing the door panel, disconnecting the motor and old regulator, and bolting the replacement in place. Basic hand tools and attention to cable routing are usually sufficient for a competent DIYer, though professional installation is recommended if you’re unfamiliar with door mechanics.

• Common tools: screwdriver set, Torx bits, socket wrench set, trim removal tools
• Time estimate: about 1–2 hours per door for experienced installers
• Important: transfer the motor or confirm motor match if replacing only the regulator

Who is this for? If you drive a 2007-or-newer BMW E90 or E91 sedan or wagon and your rear left (driver-side) window is failing—sliding unevenly, sticking, or stuck completely—this A-Premium rear window regulator without motor offers an OE-style replacement option. It's aimed at DIY mechanics, independent shops, and BMW owners who want a cost-effective part that aligns with factory mounting and cable arrangements. Check your model year and part reference numbers before ordering, and consider whether you’ll reuse the existing motor or need a matching motor assembly.