Mercedes W204 W212 W221 W176 W246 Heated Mirror Glass | Left Right Pair

Replace cracked, scratched, cloudy or delaminated mirror glass without purchasing a complete exterior mirror assembly. This OptiFlow Auto heated replacement is designed for selected Mercedes-Benz mirror applications sharing the corresponding glass shape, center mounting plate and heater-terminal arrangement.

Mercedes mirror equipment varies significantly by chassis, body style, market and option package. The original glass, backing plate and electrical functions must be compared before ordering.

Key Benefits

• Heated Mirror Configuration: Designed for the corresponding original defrost/heating terminals.
• OE-Style Shape: Maintains a clean factory-inspired appearance.
• Side-Specific Construction: Driver and passenger glass pieces are different.
• Complete Pair Option: Replace both sides for consistent clarity and appearance.
• Repair Without Full Mirror Replacement: Retain the original housing, motor and mirror cap when serviceable.
• Broad Chassis Coverage: Suitable only when the original shape and reference match.

Compatible Vehicle Families

• Selected Mercedes-Benz C-Class W204 applications
• Selected Mercedes-Benz E-Class W212 applications
• Selected Mercedes-Benz S-Class W221 applications
• Selected Mercedes-Benz A-Class W176 applications
• Selected Mercedes-Benz B-Class W246 applications
• Selected Mercedes-Benz CLA and CLS applications using the matching mirror glass

OEM and Reference Numbers

• Driver Side / Left: A2128101721
• Passenger Side / Right: A2128102521

References are supplied for identification and compatibility comparison only. This is an aftermarket OptiFlow Auto replacement component.

Available Options

• Driver Side / Left: 1 heated mirror glass
• Passenger Side / Right: 1 heated mirror glass
• Pair / Left & Right: 1 left and 1 right glass

Product Specifications

• Brand: OptiFlow Auto
• Product Type: Exterior Mirror Glass
• Vehicle Make: Mercedes-Benz
• Primary Chassis: W204, W212, W221, W176, W246
• Function: Heated Glass
• Blind-Spot Indicator: Not Claimed
• Auto-Dimming: Not Claimed
• Placement: Left and/or Right Exterior Mirror
• Fitment Type: Vehicle Specific
• Condition: New
• Manufacturer Type: Aftermarket
• HS Code: 7009100000

Packaging and Logistics

• Approximate Single Weight: 161 g
• Single Package: 20 × 13 × 3 cm / 7.87 × 5.12 × 1.18 in
• Pair Packaging: Confirm after final branded packing

Before Ordering

• Confirm the exact chassis and body style.
• Confirm the required side or pair.
• Compare the original part number.
• Compare the glass outline and curvature.
• Compare the backing plate and center mounting ring.
• Compare heater terminals and any additional connectors.
• Do not assume blind-spot or auto-dimming functions.

Installation Notes

Disconnect heater terminals carefully, support the mirror motor during removal and press the replacement backing plate evenly into position. Test heating before driving. Professional installation is recommended when the buyer is unfamiliar with Mercedes mirror systems.