{"product_id":"hella-marine-h4-9003-24v-halogen-headlight-bulb","title":"Hella Marine H4 9003 24V Halogen Headlight Bulb","description":"\u003cp class=\"nvn-hero\"\u003eThe Hella Marine H4 is a 24-volt, dual-filament halogen replacement bulb, also sold as a 9003 or HB2. One clear bulb handles both low and high beam at 75\/70 watt, putting out 1900\/1200 lumens. It's a straight drop-in for any 24V H4 fixture on a truck, commercial rig, or larger vessel.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThis is the Hella Marine H4 replacement bulb built for 24-volt electrical systems. It's a single, dual-filament halogen bulb with a clear glass envelope, rated at 75\/70 watt and putting out 1900 lumens on one filament and 1200 on the other. If a headlamp, driving light, or fog housing on your boat, truck, or piece of equipment runs an H4 bulb on 24 volts and the old one has gone dark, this is the straight drop-in replacement.\u003c\/p\u003e\n\u003cp\u003eHere's the thing that trips people up. You'll see this bulb called three different names, and they're all the exact same part. 9003, H4, and HB2 are interchangeable designations for one dual-filament bulb. So if your fixture's spec sheet says 9003 and the old bulb is stamped H4, don't second-guess it. Same bulb, different label depending on who printed the box.\u003c\/p\u003e\n\u003cp\u003eDual-filament is the whole point of an H4. One bulb handles both your low beam and your high beam. There are two separate filaments inside that single glass envelope, and the fixture switches between them when you flip the beam. That's why you see two wattage figures and two lumen figures. The 75\/70 watt and 1900\/1200 lumen ratings cover the two beams. One bulb, two jobs, one socket.\u003c\/p\u003e\n\u003cp\u003eThe 24-volt part matters more than anything else here, so read this twice. This is a 24V bulb. It won't work right on a 12-volt system, and a 12-volt bulb won't survive on 24 volts. Twenty-four-volt electrical is standard on a lot of commercial gear, heavy trucks, buses, and larger vessels running a 24V house or engine bank. Before you order, confirm the system you're feeding is actually 24 volts. If you're on a standard 12-volt setup, this isn't the bulb for you.\u003c\/p\u003e\n\u003cp\u003eThe base is a P43t-24, the standard three-tab H4 mount. It drops into any H4 or 9003 fixture wired for 24 volts, whether that's a main headlamp, an auxiliary driving light, or a fog lamp. The three tabs only index one way, so there's no guessing at the socket. Clear glass means a clean white halogen output with no tint, so you get the full light the reflector was designed around.\u003c\/p\u003e\n\u003cp\u003eHella Marine builds these to a fit-and-forget standard, the same thinking that runs through the rest of their lighting line. Decades of lamp work, quality glass and filament materials, and output that stays consistent through the life of the bulb. For a part that lives behind a lens and takes vibration every time you're underway or rolling down the road, that steadiness is exactly what you're paying for.\u003c\/p\u003e\n\u003cp\u003eOne practical tip from the shop. This is sold as a single bulb, which is perfect when one side burns out and the other is still strong. But if both your lamps have been in service the same length of time, it's worth replacing the pair. Filaments age, and a fresh bulb next to a tired one gives you mismatched brightness side to side. Grab two if you're doing a full refresh.\u003c\/p\u003e\n\u003cp\u003eOne last note before you install it. Don't touch the glass with bare fingers. The oil from your skin creates a hot spot that shortens filament life. Handle the bulb by its metal base, and if you do smudge the glass, wipe it down with a little rubbing alcohol before you power it up.\u003c\/p\u003e\n\u003cp\u003eNot sure if it's the right bulb? Pull your old one and check the base and the stamp. If it reads H4, 9003, or HB2 and your system runs 24 volts, you're in the right place. If the current bulb is a different shape, or your rig is 12 volt, this won't be the match, and we'd rather you know that before it ships.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e9003 \/ H4 \/ HB2 designation, one dual-filament bulb that covers all three common fixture spec names\u003c\/li\u003e\n  \u003cli\u003e75\/70 watt output split across two filaments for low and high beam from a single bulb\u003c\/li\u003e\n  \u003cli\u003e1900\/1200 lumens of clear white halogen light with no tint or coating\u003c\/li\u003e\n  \u003cli\u003e24-volt rated for heavy trucks, buses, commercial equipment, and 24V vessel systems\u003c\/li\u003e\n  \u003cli\u003eP43t-24 three-tab base drops straight into any standard H4 or 9003 fixture wired for 24 volts\u003c\/li\u003e\n  \u003cli\u003eClear glass envelope delivers the full output the reflector housing was designed around\u003c\/li\u003e\n  \u003cli\u003eHella Marine fit-and-forget build, consistent output through the life of the bulb\u003c\/li\u003e\n  \u003cli\u003eSold as a single bulb, ideal for a one-side replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Hella Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs a 9003 bulb the same as an H4?\u003c\/summary\u003e\n    \u003cp\u003eYes. 9003, H4, and HB2 are three names for the same dual-filament halogen bulb. If your fixture calls for any one of those, this bulb fits.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat voltage is this bulb?\u003c\/summary\u003e\n    \u003cp\u003eIt's a 24-volt bulb. It's made for 24V electrical systems and won't work correctly on a 12-volt setup.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it work on a 12-volt system?\u003c\/summary\u003e\n    \u003cp\u003eNo. Running a 24V bulb on 12 volts leaves it dim, and running a 12V bulb on 24 volts burns it out fast. Always match the bulb to your system voltage.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy are there two wattage numbers?\u003c\/summary\u003e\n    \u003cp\u003eBecause it's a dual-filament bulb. The 75\/70 watt rating covers the two filaments, one for low beam and one for high beam, both inside a single bulb.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat base does it use?\u003c\/summary\u003e\n    \u003cp\u003eA P43t-24, the standard three-tab H4 base. It drops into any H4 or 9003 fixture wired for 24 volts.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow bright is it?\u003c\/summary\u003e\n    \u003cp\u003eIt puts out 1900 lumens on one filament and 1200 on the other, in a clear white halogen light.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this come as one bulb or a pair?\u003c\/summary\u003e\n    \u003cp\u003eOne. It's sold as a single bulb, which is handy when only one side has burned out.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShould I replace both bulbs at the same time?\u003c\/summary\u003e\n    \u003cp\u003eIf both have seen the same hours, yes. A fresh bulb next to an aged one can look mismatched side to side, so many folks swap the pair at once.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat color is the light?\u003c\/summary\u003e\n    \u003cp\u003eClear. It's a standard warm-white halogen output with no tint or coating.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhere is a 24-volt H4 bulb used?\u003c\/summary\u003e\n    \u003cp\u003eOn gear with 24V electrical systems, heavy trucks, buses, commercial equipment, and larger vessels running a 24-volt bank. Check your system voltage before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eHella Marine H4 9003 24V Halogen Headlight Bulb\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHella Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eH4 24V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e760687143598\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBulb Type\u003c\/th\u003e\n\u003ctd\u003eHalogen\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBulb Designation\u003c\/th\u003e\n\u003ctd\u003e9003 \/ H4 \/ HB2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWattage\u003c\/th\u003e\n\u003ctd\u003e75\/70 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBeam Pattern\u003c\/th\u003e\n\u003ctd\u003eLow \/ High Beam\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLumens\u003c\/th\u003e\n\u003ctd\u003e1900\/1200\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLight Color\u003c\/th\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e24 Volt\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBase Type\u003c\/th\u003e\n\u003ctd\u003eP43t-24\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is a 9003 bulb the same as an H4?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. 9003, H4, and HB2 are three names for the same dual-filament halogen bulb. If your fixture calls for any one of those, this bulb fits.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What voltage is this bulb?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a 24-volt bulb. It's made for 24V electrical systems and won't work correctly on a 12-volt setup.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it work on a 12-volt system?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. Running a 24V bulb on 12 volts leaves it dim, and running a 12V bulb on 24 volts burns it out fast. Always match the bulb to your system voltage.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why are there two wattage numbers?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Because it's a dual-filament bulb. The 75\/70 watt rating covers the two filaments, one for low beam and one for high beam, both inside a single bulb.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What base does it use?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A P43t-24, the standard three-tab H4 base. It drops into any H4 or 9003 fixture wired for 24 volts.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How bright is it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It puts out 1900 lumens on one filament and 1200 on the other, in a clear white halogen light.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does this come as one bulb or a pair?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"One. It's sold as a single bulb, which is handy when only one side has burned out.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Should I replace both bulbs at the same time?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"If both have seen the same hours, yes. A fresh bulb next to an aged one can look mismatched side to side, so many folks swap the pair at once.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What color is the light?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Clear. It's a standard warm-white halogen output with no tint or coating.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Where is a 24-volt H4 bulb used?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"On gear with 24V electrical systems, heavy trucks, buses, commercial equipment, and larger vessels running a 24-volt bank. Check your system voltage before ordering.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Hella Marine","offers":[{"title":"Default Title","offer_id":67599175549021,"sku":"2011143","price":8.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_f5960056-6ec8-4f01-aa85-e96a3a7f5105.jpg?v=1790961275","url":"https:\/\/nvnmarine.com\/products\/hella-marine-h4-9003-24v-halogen-headlight-bulb","provider":"NVN Marine","version":"1.0","type":"link"}