{"title":"W21\/5W Car Bulbs","description":"\u003cp\u003eGive your night drives a boost with our line-up of W21\/5W headlight bulbs. Whether you're replacing a blown bulb or just want a clearer view of the road ahead. Stick with a direct standard replacement, or step up to an extra-bright option to make dark roads and bad weather easier to navigate.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","products":[{"product_id":"osram-ledriving-sl-led-w21-5w-red-twin","title":"OSRAM LEDriving SL LED W21\/5W Red (Twin)","description":"\u003ch4\u003eOSRAM LEDriving® SL W21\/5W Red Dual-Function Auxiliary Lamps\u003c\/h4\u003e\r\n\r\n\u003cp\u003eModernize your vehicle’s dual-function rear lighting with \u003cstrong\u003eOSRAM LEDriving® SL W21\/5W Red\u003c\/strong\u003e replacement lamps. Engineered to produce an intense, high-contrast red light, these dual-mode LED retrofits seamlessly handle both tail light and brake light operations in a single high-performance bulb.\u003c\/p\u003e\r\n\r\n\u003cp\u003eConsuming up to \u003cstrong\u003e80% less energy\u003c\/strong\u003e compared to conventional dual-filament W21\/5W bulbs, these lamps feature homogeneous light distribution for clean, uniform red illumination across the entire lamp housing without harsh hot spots.\u003c\/p\u003e\r\n\r\n\u003chr\u003e\r\n\r\n\u003ch4\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eIntense Red Dual-Function Output:\u003c\/strong\u003e Delivers deep red illumination for combined tail light and brake light functionality.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eHomogeneous Light Spread:\u003c\/strong\u003e Designed for uniform, wide-angle illumination without distracting hot spots or dark zones.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eEnergy Efficient:\u003c\/strong\u003e Uses up to 80% less energy than standard dual-filament incandescent W21\/5W wedge bulbs.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Long-Lasting:\u003c\/strong\u003e Built with high vibration and shock resistance to outlast standard glass auxiliary lamps.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eEasy Plug \u0026amp; Play Fit:\u003c\/strong\u003e Compatible with standard W21\/5W (W3x16q) wedge bases for quick, direct replacement.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr\u003e\r\n\r\n\u003ch4\u003eWhy Choose OSRAM LEDriving® SL W21\/5W Red?\u003c\/h4\u003e\r\n\r\n\u003cp\u003eFaded incandescent brake and tail lights can run hot and degrade over time, slowing reaction times for drivers behind you. OSRAM LEDriving® SL W21\/5W Red bulbs offer an instant performance and style boost, delivering faster light response and a vibrant red glow backed by trusted German LED technology.\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Please check your vehicle’s manual or existing bulb socket (W21\/5W \/ W3x16q wedge base) to ensure correct compatibility before ordering. (Note: These products do not have ECE approval and must not be used on public roads in exterior applications).\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"OSRAM","offers":[{"title":"Default Title","offer_id":58445833765167,"sku":"7515DRP-2BL","price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0817\/1900\/1391\/files\/LEDriving-SL-7515DRP-2BL-Front.jpg?v=1789036476"},{"product_id":"osram-ledriving-sl-led-w21-5w-white-twin","title":"OSRAM LEDriving SL LED W21\/5W White (Twin)","description":"\u003ch4\u003eOSRAM LEDriving® SL W21\/5W Dual-Function Auxiliary Lamps\u003c\/h4\u003e\r\n\r\n\u003cp\u003eModernize your vehicle’s dual-function rear lighting with \u003cstrong\u003eOSRAM LEDriving® SL W21\/5W\u003c\/strong\u003e replacement lamps. Engineered to deliver bright, high-contrast illumination, these dual-mode LED retrofits seamlessly handle both position\/tail light and stop\/brake light applications in a single, high-performance package.\u003c\/p\u003e\r\n\r\n\u003cp\u003eConsuming up to \u003cstrong\u003e80% less energy\u003c\/strong\u003e compared to conventional dual-filament W21\/5W bulbs, these lamps feature homogeneous light distribution for clean, uniform illumination across the entire lamp housing without harsh hot spots.\u003c\/p\u003e\r\n\r\n\u003chr\u003e\r\n\r\n\u003ch4\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\r\n\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eDual-Function Capability:\u003c\/strong\u003e Integrates dual-mode output for combined tail light and brake light functionality in a single bulb.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eHomogeneous Light Spread:\u003c\/strong\u003e Designed for uniform, wide-angle illumination without distracting hot spots or dark zones.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eEnergy Efficient:\u003c\/strong\u003e Uses up to 80% less energy than standard dual-filament incandescent W21\/5W wedge bulbs.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Long-Lasting:\u003c\/strong\u003e Built with high vibration and shock resistance to outlast standard glass auxiliary lamps.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eEasy Plug \u0026amp; Play Fit:\u003c\/strong\u003e Fits standard W21\/5W (W3x16q) wedge bases for quick, direct replacement.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003chr\u003e\r\n\r\n\u003ch4\u003eWhy Choose OSRAM LEDriving® SL W21\/5W?\u003c\/h4\u003e\r\n\r\n\u003cp\u003eTraditional dual-filament bulbs tend to run hot and degrade over time, leading to dim tail lights or burnt-out brake filaments. OSRAM LEDriving® SL W21\/5W bulbs offer an instant performance and style boost, delivering faster light response and crisp illumination backed by trusted German LED technology.\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Please check your vehicle’s manual or existing bulb socket (W21\/5W \/ W3x16q wedge base) to ensure correct compatibility before ordering. (Note: These products do not have ECE approval and must not be used on public roads in exterior applications).\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"OSRAM","offers":[{"title":"Default Title","offer_id":58445833830703,"sku":"7515DWP-2BL","price":16.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0817\/1900\/1391\/files\/LEDriving-SL-7515DWP-2BL-Front.jpg?v=1789036475"}],"url":"https:\/\/carbulbs.com\/collections\/w21-5w-car-bulbs.oembed","provider":"CarBulbs.com","version":"1.0","type":"link"}