{"product_id":"s25r-bay15d-12v-21-5w-red-stop-tail-bulb-47387","title":"S25R BAY15D PR21\/5W 47387 12V 21\/5W Red Halogen Light Bulbs – Staggered Pin Double Contact OEM Fit","description":"\u003cp\u003eRestore vivid, road-compliant red braking and tail illumination behind clear or smoked lenses with our \u003cstrong\u003eSuper Bright S25R BAY15D (PR21\/5W \/ Part #47387) Dual-Filament Halogen Bulb (Red)\u003c\/strong\u003e. Designed specifically for 12V vehicles equipped with clear, frosted, or aftermarket tail light housings, this classic bayonet bulb features a full-size \u003cstrong\u003eS25 globe\u003c\/strong\u003e, \u003cstrong\u003etwo bottom contact points\u003c\/strong\u003e, and \u003cstrong\u003etwo staggered-height locking lugs situated 180 degrees apart\u003c\/strong\u003e. Built with an intense \u003cstrong\u003e21W filament for immediate brake and stop signaling\u003c\/strong\u003e and a steady \u003cstrong\u003e5W filament for continuous night tail\/marker lights\u003c\/strong\u003e, it produces an authentic deep red beam without dashboard error warnings or hyper-flashing issues.\u003c\/p\u003e\n\n\u003chr style=\"border: none; border-top: 1px solid #eaeaea; margin: 24px 0;\"\u003e\n\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngineered for Clear \u0026amp; Smoked Lenses:\u003c\/strong\u003e High-temperature baked optical red coating produces an intense, deep red light output, ensuring legal compliance and rich coloration when installed behind transparent or tinted light lenses.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Filament Versatility (21W \/ 5W):\u003c\/strong\u003e Combines a high-output \u003cstrong\u003e21W filament\u003c\/strong\u003e for instant brake and stop light recognition with an energy-efficient \u003cstrong\u003e5W filament\u003c\/strong\u003e for continuous night tail and marker lamp operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision BAY15D (Staggered Pin) Base:\u003c\/strong\u003e Manufactured to exact OEM dimensional standards with two bottom solder terminals and side retention lugs placed at staggered (different) heights across 180°, ensuring correct keying and preventing reverse insertion into factory sockets.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZero Dash Errors \u0026amp; Factory CANBus Safe:\u003c\/strong\u003e Draws authentic factory resistive wattage (21W \/ 5W), functioning seamlessly with standard vehicle body control modules (BCM) and onboard bulb detection systems without load resistors or wire splicing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFade-Resistant Red Coating:\u003c\/strong\u003e High-grade optical red coating resists flaking, blistering, or heat discoloration under prolonged braking cycles, maintaining rich red color consistency over its full lifespan.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReinforced Heavy-Duty Construction:\u003c\/strong\u003e Supported internal filament mounts resist rough road vibrations, chassis movement, and tailgate slamming for long-term service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% Plug \u0026amp; Play:\u003c\/strong\u003e Direct 1:1 twist-and-lock bayonet replacement—swaps out your burned-out factory red brake\/tail bulbs in seconds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"border: none; border-top: 1px solid #eaeaea; margin: 24px 0;\"\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; width: 38%; color: #333;\"\u003eBulb Model \/ Socket\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003eS25R (Base: BAY15D \/ Globe: S25)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee; background-color: #fafafa;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003ePart Reference Numbers\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003e47387 \/ PR21\/5W \/ 1157R \/ 7528R \/ 380R\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eBase Pin Configuration\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003e2 Staggered Lugs (180° apart, offset vertical heights)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee; background-color: #fafafa;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eBottom Contact Points\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003eDouble Contact (Two Solder Terminals)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eLighting Technology\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003eHalogen \/ Incandescent Miniature Bulb (Dual Filament)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee; background-color: #fafafa;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eOperating Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003e12V DC (Passenger Vehicles Only)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eActual Output Power\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003e21W (Major \/ Stop Filament) \/ 5W (Minor \/ Tail Filament)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee; background-color: #fafafa;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eEmitted Color\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #d9534f; font-weight: 600;\"\u003eRed (Brake \/ Stop \/ Tail)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eLens \/ Glass Finish\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003eHigh-Temperature Optical Red Coated Glass\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee; background-color: #fafafa;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003ePrimary Applications\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003eStop Light, Brake Light, Tail Light, Rear Fog Light (Behind clear\/smoked lenses)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n      \u003ctd style=\"padding: 10px 12px; font-weight: 600; color: #333;\"\u003eInstallation Type\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px 12px; color: #555;\"\u003ePush-and-Twist Bayonet OEM Replacement (Plug \u0026amp; Play)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr style=\"border: none; border-top: 1px solid #eaeaea; margin: 24px 0;\"\u003e\n\n\u003ch3\u003eImportant Installation \u0026amp; Pin Configuration Check\u003c\/h3\u003e\n\u003cul style=\"color: #444; font-size: 13.5px; line-height: 1.6;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12V Electrical Systems Only:\u003c\/strong\u003e Exclusively engineered for 12V cars, SUVs, vans, and light utility vehicles. Not compatible with 24V commercial haulers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCheck Pin Height \u0026amp; Contact Layout Before Ordering:\u003c\/strong\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBAY15D \/ PR21\/5W (This Bulb):\u003c\/strong\u003e Double bottom contacts with \u003cstrong\u003estaggered\/stepped pin heights at 180 degrees directly opposite\u003c\/strong\u003e.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBA15D (47381):\u003c\/strong\u003e Double bottom contacts with \u003cem\u003epins level at the same height\u003c\/em\u003e.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBAZ15D (47386):\u003c\/strong\u003e Double bottom contacts with \u003cem\u003eoffset angle (150°) and staggered heights\u003c\/em\u003e.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cem\u003ePlease check the side retention pins on your old bulb barrel to confirm that one pin is positioned higher than the other.\u003c\/em\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Tip:\u003c\/strong\u003e Clean the socket terminals of any dust or oxidation before seating. Push gently into the socket and rotate clockwise until the staggered lugs lock firmly in their tracks.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TopStar","offers":[{"title":"Default Title","offer_id":49808721772803,"sku":"s25r","price":3.5,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0840\/6420\/7107\/files\/topstar-bulb-6918-clean.png?v=1791873241","url":"https:\/\/geekauto.co.nz\/products\/s25r-bay15d-12v-21-5w-red-stop-tail-bulb-47387","provider":"Geekauto","version":"1.0","type":"link"}