NPAUTO Rear Driver-Side Power Window Regulator for BMW E90/E91 2006–2012 — Without Motor, OE Fit

This NPAUTO rear driver-side power window regulator is built as a direct-fit replacement for BMW E90 and E91 sedans and wagons from 2006–2012. Designed to match original equipment fit and function, the assembly restores smooth vertical travel for the rear window glass when paired with your existing motor. It ships without a motor, making it the right choice when the regulator mechanism has failed but the original motor remains functional or when you plan to re-use a known-good motor.

What vehicles and model years does this regulator fit?

This assembly is compatible with a broad range of BMW E90 and E91 variants across the 2006–2012 production window. Confirm fitment by matching the listed OE numbers or verifying the application against your vehicle’s build year and body style.

• Fits BMW E90 and E91 models: 323i, 325i, 328i, 328xi, 330i, 330xi, 335d, 335i, 335xi and M3 (2006–2012).
• Compatible with rear left (driver-side) door only.
• OE reference numbers: 749-468 and 749-469 for cross-checking.

How does this part install and what should I expect during installation?

The regulator is manufactured to OE-style tolerances for a direct replacement install; no major modification should be required. Basic door panel removal and reconnection of the window glass and mounting hardware are the primary steps.

• Direct-replacement design aligns with factory mounting points for a straightforward swap.
• Re-use your original motor and electrical connections (part sold without motor).
• Typical install requires common hand tools and about 1–2 hours depending on experience.

What are the key mechanical features and benefits?

NPAUTO delivers a regulator assembly that focuses on quiet, consistent motion and long-term durability. The sliding channels and guide hardware are engineered to reduce binding and noise when operated with a functioning motor.

• Precise guides and rollers for smooth, even window travel.
• Durable materials and finish to resist wear from repeated use.
• Engineered to operate quietly when installed and aligned correctly.

Does this product come with warranty or customer support?

Yes — NPAUTO backs this regulator with a two-year limited warranty and customer support for fitment or installation questions. Contact the seller if you encounter fitment issues or defects so they can help with next steps.

• Included coverage: 2-year warranty from NPAUTO.
• Customer service available for part selection or installation inquiries.
• Return or replacement assistance when part proves incompatible or defective.

Who this is for: This regulator is aimed at BMW owners and independent mechanics who need a dependable rear left window guide assembly for E90/E91 cars built between 2006 and 2012. Choose this part if the regulator hardware is worn, binding, or broken but the motor is reusable, or when you prefer replacing the mechanical rail separately to control repair cost and labor time.