PY21W，功率是21W，灯泡直径是26.5mm，总长是52.5mm，也可称为BAU15S，形状与P21W相像，只是两个触角成150度，而P21W是180度。 常见使用车型如比亚迪F3、奔驰S系。

10 PCS Car 1156 Turn Signal Light, P21W 1141 S25 Waterproof High Brightness Stable Filament Halogen Bulb, 12V 21W BA15S Single Contact Long Life Bulb Replacement, Universal for Cars (Amber)

原厂信号灯带有金属底座，如同所有欧司朗原厂产品一样，具有可靠的原厂配套质量。 由于产品范围广泛，这款灯泡可用作不同应用的备用灯。

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The OSRAM PY21W ORIGINAL LINE covers a wide product range from headlights to mini watt lamps and therefore always offers the right spare lamp of OEM quality; Please use our automotive search tool to check if this bulb is compatible with your car

Halfords 581S PY21W car bulb, developed to ECE regulation 37.Provides reliable performance and light output. The distinct silver coating gives an integrated look in a light unit, but illuminates amber. Suitable for indicator. It’s E-marked for road legal use in the UK and Europe.

ORIGINAL signal lamps with metal bases feature - like all ORIGINAL products from OSRAM - a reliable OEM quality. Due to the wide product range, the lamps can be used as original spare lamps for different applications.

10 PCS Car 1156 Turn Signal Light, P21W 1141 S25 Waterproof High Brightness Stable Filament Halogen Bulb, 12V 21W BA15S Single Contact Long Life Bulb Replacement, Universal for Cars (Amber)

2014年8月12日 · Buy Philips 12496SVB2 PY21W Silver Vision, Indicator Bulbs with Silver Coating (2 x Bulbs): Turn Signal Bulbs - Amazon.com FREE DELIVERY possible on eligible purchases