{"product_id":"osram-ultra-life-p21-5w-bay15d-7528ult","title":"OSRAM ULTRA LIFE P21\/5W 7528ULT Stop\/Tail Bulb 12V 21\/5W – BAY15d \u0026 3× Longer Life","description":"\u003cp\u003eThe OSRAM ULTRA LIFE P21\/5W is a premium long-life halogen signal lamp that delivers up to triple the service life of a standard replacement bulb. Using the dual-filament P21\/5W \/ BAY15d fitting found on the vast majority of European and Asian vehicles, it handles combined stop\/tail duties with ease — offering both the bright 21W brake-light filament and the 5W running-light filament in a single, robust lamp.\u003c\/p\u003e\n\u003cp\u003eDesigned for drivers and fleet operators who want to reduce the hassle of frequent bulb changes, the ULTRA LIFE formula extends the filament lifespan significantly while maintaining full OEM-compatible light output.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eUp to 3× longer life than standard halogen equivalents\u003c\/li\u003e\n  \u003cli\u003eDual-filament design: 21W stop \/ 5W tail in one lamp\u003c\/li\u003e\n  \u003cli\u003eBAY15d offset-pin bayonet cap for correct orientation in housing\u003c\/li\u003e\n  \u003cli\u003eFull OEM-compatible light output — 440 lm (21W) \/ 35 lm (5W)\u003c\/li\u003e\n  \u003cli\u003eECE R37 approved for road-legal use across Europe\u003c\/li\u003e\n  \u003cli\u003eFits all vehicles using the P21\/5W standard, including cars, SUVs, and vans\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eExtended lifespan: up to 800 h on the main filament, up to 6000 h on the position filament\u003c\/li\u003e\n  \u003cli\u003eReduces roadside breakdowns caused by blown stop or tail lamps\u003c\/li\u003e\n  \u003cli\u003eIdeal for fleet vehicles and high-mileage drivers\u003c\/li\u003e\n  \u003cli\u003eSame brilliant white light output as standard OSRAM ORIGINAL lamps\u003c\/li\u003e\n  \u003cli\u003eTrusted by professional workshops and used by OEM vehicle builders\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBulb Type:\u003c\/strong\u003e P21\/5W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOSRAM Part Number:\u003c\/strong\u003e 7528ULT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWattage:\u003c\/strong\u003e 21\/5 W (dual filament)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLuminous Flux:\u003c\/strong\u003e 440 lm (21W filament) \/ 35 lm (5W filament)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBase \/ Cap:\u003c\/strong\u003e BAY15d (dual contact, offset pin)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e White \/ Clear\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 52.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLifespan:\u003c\/strong\u003e ~800 h main filament \/ ~6000 h position filament\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity in Pack:\u003c\/strong\u003e 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEAN:\u003c\/strong\u003e 4008321413123\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhy You'll Love It\u003c\/h4\u003e\n\u003cp\u003eStop-and-tail lamps are safety-critical — a failed bulb not only risks a fine but leaves you invisible to drivers behind you. The OSRAM ULTRA LIFE P21\/5W gives you peace of mind with a lifespan that far outlasts standard bulbs, so you spend more time on the road and less time in the workshop. Install once, drive confidently.\u003c\/p\u003e","brand":"OSRAM","offers":[{"title":"Default Title","offer_id":56577589281150,"sku":"510099","price":1.67,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/2250\/3550\/files\/15674662158718.webp?v=1779631760","url":"https:\/\/lynk.gr\/en-eu\/products\/osram-ultra-life-p21-5w-bay15d-7528ult","provider":"Lynk.gr","version":"1.0","type":"link"}