Window Regulator A6397200446S

The A6397200446S is a premium heavy-duty electric window regulator assembly specifically designed for the Mercedes-Benz Vito and Viano commercial platforms. The "S" suffix identifies this as a complete service kit or a reinforced version. TinzerMotor manufactures this part as a high-durability aftermarket solution, engineered to handle the constant duty cycles of delivery vans and transport fleets.

• Part Number: A6397200446S / 6397200446

• Primary Application: Specifically engineered for Mercedes-Benz Vito (W639) and Viano (W639) models (2003–2014).

• Position: Front Left (Driver Side).

• Mechanism Type: Electric window lifter (motor-ready), featuring a robust cable-driven system.

• Material: Constructed from high-tensile galvanized steel with reinforced polymer pulleys to ensure long-term structural integrity and resistance to wear.

• Mercedes-Benz OEM: A639 720 04 46, 639 720 04 46, A6397200046

• Magneti Marelli: 350103735000 (AC735)

• Febi Bilstein: 31445

• Trucktec: 02.53.076

• VAICO: V30-1049

• Precision Engineering: Every unit is built to exact 1:1 OEM specifications, ensuring that mounting holes and motor attachment points align perfectly with the original door frame for a "plug-and-play" installation.

• Enhanced Cable Technology: TinzerMotor utilizes multi-strand, pre-stretched stainless steel cables with a specialized low-friction coating. This design prevents stretching and snapping, which are the most common failure points in commercial van regulators.

• Rigorous Reliability Testing:

• 35,000+ Cycle Validation: Each design is tested to withstand over 35,000 full-stroke operations, simulating years of intensive daily use in professional environments.

• Anti-Corrosion Finish: All metal surfaces undergo an 8-stage salt spray test, protecting the regulator from moisture and road salt ingress typical in urban and coastal regions.

• Vibration & Load Testing: Verified to remain noise-free and structurally sound even under the constant vibration and heavy glass loads typical of commercial driving.

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