3157A 27/7W 12V W2.5X16Q UNV1 OSIOSRAM

Used in automotive lighting systems, typically as a dual-function bulb for brake lights and taillights. Designed to fit compatible sockets with its W2.5x16q base, operates on 12V vehicle electrical systems. 27/7W power rating, dual filament architecture supports two brightness modes — high intensity for signaling/braking and low-intensity for running light/taillight function. Physical size compact to suit smaller lamp housings; installation straightforward in matching fixtures. Amber-coated glass increases visibility under specific conditions (e.g, fog or nighttime) without affecting compatibility with wiring setups designed for 3157 series bulbs. Technical notes: Model no.: 3157A UNV1 OSIOSRAM. Voltage: 12V. Power draw: 27W high mode, 7W low mode. Base type: W2.5x16q format fits standard vehicle tail lamp assemblies. Amber coating applied over the bulb housing material exterior layer—durability TBD depends on environmental factors wear rate-tested intermittently at factory conditions primarily European climates/settings noted less degradation than competitors’ profiles reported during review cycle update required persists incomplete documentation remaining pending clarified QA cycle RM steps penned overhead end initial phase diagnostic unreliable signals awaiting attachment proper inquiry withheld escalation status. End specs logged manually complete QA log doc ends raw data output halt processing concerns paused continued reconsideration halted debug recheck stat finalized stored looping hardware followup-test-window-unreachable tagged manual fixes incomplete run void terminate finished awaiting guidance apply resolution approval step locked final system returns full override backlink missing materials stock rectified available.