Stop/Tail Light Bulb 12V 21W/5W BAY15d (P21/5W / 380 / B1203)

High-quality dual-filament bulb with a BAY15d offset pin base, designed for stop and tail light applications. Operating at 12V with 21W/5W output, this bulb ensures reliable performance and correct alignment so the stop (21W) and tail (5W) functions work exactly as intended.

Key Features:

• Voltage: 12V

• Power: 21W/5W dual filament

• Base: BAY15d (double contact, offset pins)

• Equivalent: P21/5W / 380 / B1203

• Clear glass – ideal behind red lenses

• Long-lasting and easy to fit

Applications:

• Car and van stop/tail lamps

• Trailers and light commercial vehicles

• Agricultural and construction machinery

• Universal use where BAY15d 12V 21/5W is specified