{"product_id":"sealight-3157-led-reverse-backup-bulbs-white-pack-of-2-57-smd-projector-lens-up-to-700-brighter","title":"SEALIGHT 3157 LED Reverse Backup Bulbs White — Pack of 2, 57-SMD Projector Lens, Up to 700% Brighter","description":"\u003cp\u003e\u003cstrong\u003eSEALIGHT 3157 LED Reverse Bulbs are a high-output white backup and brake light upgrade that delivers focused, long-lasting illumination for clearer reversing and improved road visibility.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese SEALIGHT LEDs replace common 3157\/3156-style halogen bulbs with a compact projector design and a dense 57-SMD chipset to push substantially more white light where you need it. Built from aviation-grade aluminum with a dedicated heat path and a constant-current driver, they are designed for 12V and 24V systems and plug into a wide range of base types for easy installation. The bulbs are intended for reverse lights, backup lights, tail\/brake lights and some parking light applications where bright, focused white output matters.\u003c\/p\u003e\n\n\u003ch3\u003eHow much brighter are these bulbs compared with stock halogen units?\u003c\/h3\u003e\n\u003cp\u003eThese bulbs are marketed as delivering up to 700% more visible output than typical halogen reverse bulbs, concentrating light through a small projector lens and the dense 57-SMD array. That produces stronger illumination behind the vehicle for improved sightlines while backing up under low-light or poor-weather conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLight output: approximately 1425 lumens per bulb\u003c\/li\u003e\n  \u003cli\u003eChipset: 56 x 4014 SMD + 1 x 2835 SMD per bulb for even coverage\u003c\/li\u003e\n  \u003cli\u003eProjector lens focuses bright white beam with reduced glare\u003c\/li\u003e\n  \u003cli\u003eRated working watts: about 6.6W per bulb for efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these fit my car and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eSEALIGHT 3157 LEDs use a non-polarity design and are plug-and-play for many 3157\/3156-style sockets, so most installations require no wiring modifications. They are compatible with a long list of bases commonly used for reverse and brake lighting, but they do not fit 7443\/7440 or 912\/921 bases.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible bases include: 3157, 3156, 3056, 3057, 3155, 3356, 3357, 3457, 3757, 4057, 4114, 4157\u003c\/li\u003e\n  \u003cli\u003eWorking voltage: 9V–30V (suitable for 12V and 24V vehicles)\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play installation; polarity-insensitive socket\u003c\/li\u003e\n  \u003cli\u003eNot compatible with certain rectangular\/flat bases listed above\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is heat handled and what can I expect for durability?\u003c\/h3\u003e\n\u003cp\u003eThe bulbs use a full aviation-grade aluminum housing to move heat away from the LEDs and a built-in constant-current IC to stabilize output. That combination lowers operating temperature and helps keep light levels steady over time, contributing to a long service life compared with unmanaged LED assemblies.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum body for rapid heat dissipation and structural durability\u003c\/li\u003e\n  \u003cli\u003eConstant-current driver protects LEDs from voltage swings\u003c\/li\u003e\n  \u003cli\u003eProjector lens keeps beam pattern consistent while minimizing dark spots\u003c\/li\u003e\n  \u003cli\u003eRated for many years of typical use under normal driving conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat applications are these bulbs best suited for?\u003c\/h3\u003e\n\u003cp\u003eThey are designed primarily as reverse\/backup lights but can also serve as brake, tail or parking lights depending on the vehicle and lamp housing. Because they emit bright white light, they work best where a white reverse illumination is required; for turn signals you’ll need an amber lens or housing to maintain correct color.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrimary use: reverse and backup lights for safer reversing\u003c\/li\u003e\n  \u003cli\u003eAlso suitable for brake, tail, and parking light assemblies in some vehicles\u003c\/li\u003e\n  \u003cli\u003eFor turn signals, an amber lens or housing is required for compliance\u003c\/li\u003e\n  \u003cli\u003eIncludes two bulbs per pack for paired replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: drivers who want a brighter, more focused reverse light without extensive rewiring — especially those who back up frequently at night or in poor weather. Installers and DIYers who prefer plug-and-play LED upgrades that fit common 3157-family sockets will appreciate the heat-managed design, solid-state driver and the projector lens that reduces glare and dark zones. If your vehicle uses incompatible bases listed above, choose a matched base style instead.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these replace my stock 3157 halogen bulbs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — they are plug-and-play for most 3157\/3156-style sockets and non-polarity for easy swap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these bulbs suitable for 24V trucks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — they operate across 9–30V, so they work with typical 12V and 24V vehicle systems.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SEALIGHT","offers":[{"title":"Default Title","offer_id":55164418818391,"sku":"B0FP4Z9WDD","price":31.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/sealight-3157-front-view-pair.jpg?v=1790352496","url":"https:\/\/britishgarage.co.uk\/products\/sealight-3157-led-reverse-backup-bulbs-white-pack-of-2-57-smd-projector-lens-up-to-700-brighter","provider":"British Garage","version":"1.0","type":"link"}