P21W, PY21W, P21/5W ｜How do I choose the right LED Bulb size for my car? - Per-Accurate Inc.

P21W, PY21W, P21/5W, are all commonly used car light bulb base, do you often confuse these? This article will help you to solve the confusion, so that you won't buy the wrong specification, only to find that you can't use it at home!

S25 Amber 12V 21W P21W P21/5W 12V 21/5wcar Brake Light Auto Bulb - China 1156 Bulb, 1157 Bulb

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【500%+ Brightness】: Pack of 2 BAZ15D(P21/4W) led bulbs come with 2A current, 6000K Pure White, Voltage: DC 12V-24V, Power: 25W/PC, 5000LM 5 times

Eluseastar S25 P21/4W BAZ15D LED Bulbs White 6000K Built in Resistor with 6000LM Extremely Bright for Car Side Marker Brake Reverse Backup Daytime

Anyone know for sure which bulb I need? I need P21W but I've only found them with various number in front (no clue what they mean, no explanation on the websites). Nothing

Each BA15S LED light bulb of single contact bayonet base, comes with 360 degree outfitted 24 pieces SMD-4014 and projector lens with high power 6

VehiCode 12V/24V Amber 67 89 97 5007 5008 R10W 1003 1156 LED Bulb Yellow 7506 P21W 1156A Projector Mini Replacement for Car Harley Motorcycle Turn

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Key Features:, Enhanced brightness and reliable performance with constant current circuitry., Available color options: white, amber, red., Built-in

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Super Bright 1200LM High Power Power Backup Led Bulb 1156 BA15S P21W S25 4014 Bulbs For Car Reversing White Replacement From Wuliannanya, $22.24