Original BMW Left Trunk Lid Taillight for BMW 3 Series F30 and M3 F80 (2016–2018)

Original BMW part 63-21-7-369-121 is the left taillight section mounted in the trunk lid of the facelifted F30 3 Series and F80 M3, covering 2016–2018 models from the 320i through the M3. BMW names it the rear light in trunk lid, left, so this is the lamp unit carried on the lid itself, and it moves with the lid when the trunk opens. A taillight assembly holds the lens and lighting elements that show a car's position from behind and signal braking to following traffic. BMW gives the weight as 541 g (1.2 lb), and production of this number started in July 2015 with the F30 facelift. It is made in Slovakia and sold as a single left-side unit.

Original BMW Parts carry a 24-month parts warranty.

Two details decide whether this is the correct lamp: side and mounting location. This number covers only the left trunk-lid light. BMW's parts data ties it to F30 facelift sedans with N20, N26, N47N, B46, B48X, and B58 engines, along with the F80 M3 and its S55 engine. A cracked or damaged lens is a common reason to replace the assembly, because it lets moisture and dirt into the housing. That can lead to corroded contacts, wiring trouble, or condensation you can see inside the lens.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 63-21-7-369-121
• BMW name: rear light in trunk lid, left
• Position: left side, trunk lid
• Weight: 541 g (1.2 lb)
• Production start: July 2015
• Country of manufacture: Slovakia
• Sold as: one piece
• Warranty: 24-month parts warranty

Common Questions

Does this fit the right side of the car?
No. This number is the left trunk-lid light only.

Does it fit the F80 M3?
Yes. BMW includes the F80 facelift M3 with the S55 engine, and our fitment covers the 2016–2018 M3.

What usually signals that the lamp needs replacing?
A cracked lens, moisture buildup inside the housing, or corrosion on the electrical contacts are the usual signs.

Our parts team can confirm the correct side and chassis for your 3 Series before it ships.

Fitment & Compatibility

Use the fitment table below to confirm the exact year, make, model, submodel, and any application notes before ordering. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.