Reversing Car Bulb P21W BA15S 12V 21W

The P21W BA15S is a standard single-filament incandescent automotive bulb rated at 12V and 21W, widely used as a reversing light, brake light, rear fog light, indicator, and tail light across a broad range of cars, motorcycles, and light commercial vehicles. Fitted with the BA15S single-contact bayonet base, it is a direct, tool-free replacement for any vehicle position that calls for a P21W or 382-type bulb.

Producing 460 lumens at a test voltage of 13.5V, this bulb delivers a bright, clear white output suitable for reversing and signalling duties. The robust construction offers good vibration resistance, ensuring stable performance over the rated service life of up to 500 hours. Its compact dimensions (52.5mm × 26.5mm) allow fitment in tight lamp housings without modification. Cross-references include the 382, 1156, and 7506 part numbers, making it compatible with a very wide range of vehicle makes and models. A practical, cost-effective consumable to keep on hand for roadside repairs and routine maintenance.

Specification:

• Bulb Type : P21W (Single filament incandescent)
• Base Type : BA15S (Single contact bayonet)
• Nominal Voltage : 12V
• Nominal Wattage : 21W
• Test Voltage : 13.5V
• Luminous Flux : 460 lm
• Luminous Flux Tolerance : ±15%
• Bulb Length : 52.5mm
• Bulb Diameter : 26.5mm
• Lifespan (B3) : 250 hours
• Lifespan (Tc) : 500 hours
• Cross References : 382, 1156, 7506
• Applications : Reversing, brake, indicator, fog, tail & number plate lights