{"product_id":"marsauto-h4-9003-led-bulbs-pack-of-2-6500k-cool-white-40-000lm-pair-mini-plug-and-play","title":"Marsauto H4\/9003 LED Bulbs — Pack of 2, 6500K Cool White, 40,000LM Pair, Mini Plug-and-Play","description":"\u003cstrong\u003eThese Marsauto H4\/9003 LED bulbs deliver ultra-bright 6500K cool-white light in a compact, plug-and-play package to upgrade your vehicle’s low\/high beam performance.\u003c\/strong\u003e\n\n\u003cp\u003eReplacing halogen H4\/9003 bulbs with a modern LED should improve visibility without complicated installation or bulky drivers. Marsauto engineered these bulbs to match the original bulb size while offering far higher output—up to 40,000 lumens per pair—plus a crisp 6500K color temperature for a daylight-like beam. Below you'll find quick answers to common buyer questions about fit, performance, and installation.\u003c\/p\u003e\n\n\u003ch3\u003eHow much brighter are these bulbs compared with standard halogens?\u003c\/h3\u003e\n\u003cp\u003eCompared with factory halogen lamps, these Marsauto H4\/9003 LEDs provide significantly greater luminous output, designed to illuminate farther and with clearer contrast at night. The specification lists up to 40,000 lumens per pair, driven by 32 advanced chips and M2S technology for efficient light conversion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUp to 40,000 lumens per pair (real-world output depends on housing and alignment).\u003c\/li\u003e\n  \u003cli\u003e32 high-efficiency LED chips per bulb for consistent illumination.\u003c\/li\u003e\n  \u003cli\u003e6500K cool-white color for high contrast and road detail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these bulbs fit my car and how difficult is installation?\u003c\/h3\u003e\n\u003cp\u003eMarsauto designed these H4\/9003 bulbs to be near 1:1 in size compared to stock bulbs, making them compatible with most vehicles that accept H4\/9003 fittings. They are plug-and-play and non-polarity, so no extra driver box or wiring changes are typically needed. Always confirm your vehicle’s required bulb type in the owner’s manual before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNearly identical physical size to OEM bulbs—helps with dust cover clearance.\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play wiring; no external driver required.\u003c\/li\u003e\n  \u003cli\u003eNon-polarity design reduces installation error risk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDo these LEDs produce glare for oncoming drivers?\u003c\/h3\u003e\n\u003cp\u003eProper beam pattern and cutoff are important to avoid blinding other road users. Marsauto states these bulbs are engineered to recreate a focused beam with a defined cutoff similar to stock halogen reflectors and projectors. Correct aiming during installation ensures the intended light distribution without excessive glare.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to concentrate light where the road needs it most.\u003c\/li\u003e\n  \u003cli\u003eSharp cutoff comparable to OEM beam patterns when properly aligned.\u003c\/li\u003e\n  \u003cli\u003eReduced stray light helps prevent dazzling oncoming drivers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable are these bulbs and what keeps them cool?\u003c\/h3\u003e\n\u003cp\u003eDurability was a priority: the bulbs use aviation-grade aluminum and a large copper cooling plate to dissipate heat quickly, which supports long life and consistent output. The spec sheet lists a long operational life expectancy; actual hours depend on driving conditions and electrical stability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAviation-aluminum body for structural strength and heat conduction.\u003c\/li\u003e\n  \u003cli\u003eCopper cooling plate and efficient thermal path to prevent overheating.\u003c\/li\u003e\n  \u003cli\u003eEstimated long lifespan with stable performance over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: These Marsauto H4\/9003 LED bulbs suit drivers who want a straightforward, high-output upgrade from halogen bulbs without major wiring changes—especially owners of vehicles that accept H4\/9003 bulbs and have limited space behind the headlamp. They are ideal if you prioritize a compact bulb that fits into tight housings, a crisp 6500K daylight appearance, and a strong, focused beam. For best results, verify bulb fitment for your specific make and model and aim the headlights after installation to ensure safe, legal illumination.\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: Are these bulbs truly plug-and-play?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Marsauto H4\/9003 bulbs are designed to be plug-and-play with no external driver required and non-polarity wiring for most vehicles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these LEDs cause dashboard error codes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Most modern vehicles will accept these bulbs without errors, but some cars may need a CANbus adapter; check compatibility before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Marsauto","offers":[{"title":"Default Title","offer_id":48083483590814,"sku":"B0GCJC69N5","price":63.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/marsauto-h4-9003-front-view.jpg?v=1785833938","url":"https:\/\/northtrailauto.ca\/products\/marsauto-h4-9003-led-bulbs-pack-of-2-6500k-cool-white-40-000lm-pair-mini-plug-and-play","provider":"North Trail Auto","version":"1.0","type":"link"}