51358159835 51358252429 Rear Left Window Regulator for BMW 5 Series E39

Product Emphasis: OEM-grade rear left window regulator engineered to raise and lower the rear driver-side window smoothly and evenly. This regulator mechanism includes the cable and pulley system that guides the window glass within the door channels. Designed as a direct replacement for the original unit, which commonly fails due to bound or broken cables or worn regulator gears.

Original Part Number: 51358159835 / 51358252429

OEM Standard Size: Yes

Vehicle Compatibility: BMW 5 Series (E39)

Years: 1996–2003

Models: 520i, 523i, 525i, 528i, 530i, 535i, 540i, M5 (Sedan and Touring)

Product Name: Window Regulator, Rear Left (Power Window Regulator / Window Lift Mechanism)

Quality: OEM-grade replacement. Available with or without motor depending on application. 12-month warranty.

• Brand: OEM Quality (AISIN, VAICO, Dorman, BLIC, ABAKUS)

• Manufacturer Part Number: 51358159835 / 51358252429

• Part Description: Window Regulator, Rear Left

• Condition: New

• Fitment Type: Direct Replacement

• Position: Rear Left (Driver Side Rear)

• Material: Metal and Plastic

• Motor Included: Varies by option (with or without motor)

• Quantity Required: 1 per vehicle

• OEM-grade replacement ensuring perfect vehicle fitment

• Raises and lowers rear left window evenly within the window channels

• Pre-formed shape matches factory door mounting points

• Replaces bound or broken cables and worn regulator gears

• Durable construction resistant to daily wear and temperature fluctuations

• Direct fitment using factory mounting points

• No modifications required for installation

BMW 5 Series (E39):

• 1996–2003 (520i, 523i, 525i, 528i, 530i, 535i, 540i, M5 — Sedan and Touring)

Q1: What does this window regulator do?
A: It is the mechanical assembly inside the rear left door that lifts and lowers the window glass using a cable and pulley system. A worn or broken regulator can cause the window to be stuck, move slowly, or make grinding noises.

Q2: Is this a genuine OEM part?
A: 51358159835 and 51358252429 are the OEM part numbers for this rear left window regulator. They are available as OEM-grade replacements from brands including AISIN, VAICO, Dorman, BLIC, and ABAKUS.

Q3: Will this fit my 2001 BMW 530i?
A: This regulator is compatible with BMW 5 Series (E39) models from 1996–2003, including the 530i. Always verify compatibility using your vehicle's VIN before ordering.