Bosch Pure Light P21/5W is a traditional and durable halogen bulb with two separate filaments. It is the most common bulb model for vehicles where the same lamp functions as both a tail light (5W) and a brake light (21W). The Bosch manufacturing process guarantees a long service life and consistent brightness for both functions.
Product benefits:
Dual-effect safety: Optimized for brake and tail light use – two important functions in one bulb.
Genuine Bosch quality: Excellent vibration resistance prevents premature filament breakage, which extends service intervals.
Test-safe: Meets all ECE requirements and corresponds to the original part (OE), so it is a direct replacement for the standard bulb without fault codes or compatibility issues.
Technical data:
Type: P21/5W (Dual-effect / Halogen)
Applications: Combined brake light and tail light.
Voltage / Power: 12 V / 21W and 5W
Base: BAY15d (Two poles at the bottom, pins opposite but at different heights)
Package size: 1 pc (Carton box)
Product code: 1 987 302 202
Important note for installation: Check the base of your old bulb. In this BAY15d model, the side pins are directly opposite. If the pins in your car's bulb are asymmetrical (not directly opposite), choose the BAZ15d model (1 987 302 215).