{"product_id":"royal-enfield-594577-h7-headlamp-bulb-12v-55w-thunderbird","title":"Royal Enfield 594577 – OEM Headlamp Bulb H7 12V 55W for Thunderbird \u0026 All Bikes with H7 Socket","description":"\u003cp data-start=\"461\" data-end=\"877\"\u003eUpgrade your motorcycle’s visibility with the \u003cstrong data-start=\"550\" data-end=\"606\"\u003eRoyal Enfield 594577 OEM Headlamp Bulb (H7, 12V 55W)\u003c\/strong\u003e. This genuine factory-spec bulb is widely used in \u003cstrong data-start=\"657\" data-end=\"693\"\u003eRoyal Enfield Thunderbird models\u003c\/strong\u003e and compatible with any bike that uses a standard \u003cstrong data-start=\"744\" data-end=\"757\"\u003eH7 socket\u003c\/strong\u003e. Offering powerful 55W illumination, it provides a sharp, bright beam ideal for safe night rides and highway touring.\u003c\/p\u003e\n\u003cp data-start=\"879\" data-end=\"1119\"\u003eUnlike low-quality aftermarket bulbs, the OEM 594577 ensures stable output, correct fitment, and longer service life. Designed for consistent performance, it resists vibrations, heat, and sudden voltage fluctuations common in motorcycles.\u003c\/p\u003e\n\u003cp data-start=\"1121\" data-end=\"1298\"\u003eWhether you’re replacing a fused bulb or upgrading both high\/low beams for balanced light output, the \u003cstrong data-start=\"1223\" data-end=\"1247\"\u003e594577 headlamp bulb\u003c\/strong\u003e guarantees an exact fit and factory reliability.\u003c\/p\u003e\n\u003cp data-start=\"1300\" data-end=\"1591\"\u003e⚠️ \u003cstrong data-start=\"1303\" data-end=\"1319\"\u003eFitment Tip:\u003c\/strong\u003e Confirm your motorcycle’s headlamp unit uses an \u003cstrong data-start=\"1368\" data-end=\"1381\"\u003eH7 socket\u003c\/strong\u003e before ordering. This part is verified for \u003cstrong data-start=\"1425\" data-end=\"1462\"\u003eThunderbird 350 \/ Thunderbird 500\u003c\/strong\u003e \u003cstrong\u003eETC\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"1593\" data-end=\"1596\"\u003e\n\u003cp data-start=\"1598\" data-end=\"1617\"\u003e\u003cstrong data-start=\"1598\" data-end=\"1615\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1618\" data-end=\"2170\"\u003e\n\u003cli data-start=\"1618\" data-end=\"1679\"\u003e\n\u003cp data-start=\"1620\" data-end=\"1679\"\u003eGenuine \u003cstrong data-start=\"1628\" data-end=\"1661\"\u003eRoyal Enfield Part No. 594577\u003c\/strong\u003e – Headlamp Bulb\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1680\" data-end=\"1716\"\u003e\n\u003cp data-start=\"1682\" data-end=\"1716\"\u003eType: \u003cstrong data-start=\"1688\" data-end=\"1704\"\u003eH7, 12V, 55W\u003c\/strong\u003e (Halogen)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1717\" data-end=\"1755\"\u003e\n\u003cp data-start=\"1719\" data-end=\"1755\"\u003eOEM bulb for Thunderbird 350 \/ 500\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1756\" data-end=\"1847\"\u003e\n\u003cp data-start=\"1758\" data-end=\"1847\"\u003eFits \u003cstrong data-start=\"1763\" data-end=\"1790\"\u003eany bike with H7 socket\u003c\/strong\u003e (Royal Enfield, Bajaj, Yamaha, KTM, Hero, Honda, etc.)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1848\" data-end=\"1904\"\u003e\n\u003cp data-start=\"1850\" data-end=\"1904\"\u003eProduces bright, clear beam for improved road safety\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1905\" data-end=\"1973\"\u003e\n\u003cp data-start=\"1907\" data-end=\"1973\"\u003eFactory tested for durability against vibration \u0026amp; voltage spikes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1974\" data-end=\"2031\"\u003e\n\u003cp data-start=\"1976\" data-end=\"2031\"\u003eDirect plug-in replacement – no modification required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2032\" data-end=\"2079\"\u003e\n\u003cp data-start=\"2034\" data-end=\"2079\"\u003eLong life compared to generic halogen bulbs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2080\" data-end=\"2124\"\u003e\n\u003cp data-start=\"2082\" data-end=\"2124\"\u003eMaintains correct beam focus \u0026amp; alignment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2125\" data-end=\"2170\"\u003e\n\u003cp data-start=\"2127\" data-end=\"2170\"\u003eIdeal for night rides and highway touring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2172\" data-end=\"2175\"\u003e\n\u003cp data-start=\"2177\" data-end=\"2203\"\u003e\u003cstrong data-start=\"2177\" data-end=\"2201\"\u003eCompatibility Table:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"2205\" data-end=\"2430\" class=\"w-fit min-w-(--thread-content-width)\" style=\"width: 100%; height: 205.734px;\"\u003e\n\u003cthead data-start=\"2205\" data-end=\"2231\"\u003e\n\u003ctr data-start=\"2205\" data-end=\"2231\" style=\"height: 29.3906px;\"\u003e\n\u003cth data-start=\"2205\" data-end=\"2213\" data-col-size=\"sm\" style=\"width: 23.835%; height: 29.3906px;\"\u003eModel\u003c\/th\u003e\n\u003cth data-start=\"2213\" data-end=\"2222\" data-col-size=\"sm\" style=\"width: 11.1878%; height: 29.3906px;\"\u003eEngine\u003c\/th\u003e\n\u003cth data-start=\"2222\" data-end=\"2231\" data-col-size=\"md\" style=\"width: 62.3859%; height: 29.3906px;\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"2246\" data-end=\"2430\"\u003e\n\u003ctr data-start=\"2246\" data-end=\"2290\" style=\"height: 58.7812px;\"\u003e\n\u003ctd data-start=\"2246\" data-end=\"2264\" data-col-size=\"sm\" style=\"width: 23.835%; height: 58.7812px;\"\u003eThunderbird 350\u003c\/td\u003e\n\u003ctd data-start=\"2264\" data-end=\"2276\" data-col-size=\"sm\" style=\"width: 11.1878%; height: 58.7812px;\"\u003eUCE 346cc\u003c\/td\u003e\n\u003ctd data-start=\"2276\" data-end=\"2290\" data-col-size=\"md\" style=\"width: 62.3859%; height: 58.7812px;\"\u003eDirect fit (2 pcs required for complete replacement)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2291\" data-end=\"2335\" style=\"height: 58.7812px;\"\u003e\n\u003ctd data-start=\"2291\" data-end=\"2309\" data-col-size=\"sm\" style=\"width: 23.835%; height: 58.7812px;\"\u003eThunderbird 500\u003c\/td\u003e\n\u003ctd data-start=\"2309\" data-end=\"2321\" data-col-size=\"sm\" style=\"width: 11.1878%; height: 58.7812px;\"\u003eUCE 499cc\u003c\/td\u003e\n\u003ctd data-start=\"2321\" data-end=\"2335\" data-col-size=\"md\" style=\"width: 62.3859%; height: 58.7812px;\"\u003eDirect fit (2 pcs required for complete replacement)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2336\" data-end=\"2430\" style=\"height: 58.7812px;\"\u003e\n\u003ctd data-start=\"2336\" data-end=\"2362\" data-col-size=\"sm\" style=\"width: 23.835%; height: 58.7812px;\"\u003eOther Bikes (Universal)\u003c\/td\u003e\n\u003ctd data-start=\"2362\" data-end=\"2366\" data-col-size=\"sm\" style=\"width: 11.1878%; height: 58.7812px;\"\u003e–\u003c\/td\u003e\n\u003ctd data-start=\"2366\" data-end=\"2430\" data-col-size=\"md\" style=\"width: 62.3859%; height: 58.7812px;\"\u003eWorks with any motorcycle using \u003cstrong data-start=\"2400\" data-end=\"2413\"\u003eH7 socket\u003c\/strong\u003e headlamp bulbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-start=\"2432\" data-end=\"2435\"\u003e\n\u003cp data-start=\"2437\" data-end=\"2461\"\u003e\u003cstrong data-start=\"2437\" data-end=\"2459\"\u003eVariants \/ Supply:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2462\" data-end=\"2615\"\u003e\n\u003cli data-start=\"2462\" data-end=\"2489\"\u003e\n\u003cp data-start=\"2464\" data-end=\"2489\"\u003ePart Number: \u003cstrong data-start=\"2477\" data-end=\"2487\"\u003e594577\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2490\" data-end=\"2538\"\u003e\n\u003cp data-start=\"2492\" data-end=\"2538\"\u003eType: \u003cstrong data-start=\"2498\" data-end=\"2536\"\u003eHeadlamp Bulb, H7, 12V 55W Halogen\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2539\" data-end=\"2615\"\u003e\n\u003cp data-start=\"2541\" data-end=\"2615\"\u003eSupplied: Single bulb (recommended to replace in pairs for beam balance)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2617\" data-end=\"2620\"\u003e\n\u003ch2 data-start=\"2622\" data-end=\"2656\"\u003e❓FAQs \u003c\/h2\u003e\n\u003col data-start=\"2658\" data-end=\"4505\"\u003e\n\u003cli data-start=\"2658\" data-end=\"2842\"\u003e\n\u003cp data-start=\"2661\" data-end=\"2842\"\u003e\u003cstrong data-start=\"2661\" data-end=\"2726\"\u003eWhat is the Royal Enfield 594577 headlamp bulb specification?\u003c\/strong\u003e\u003cbr data-start=\"2726\" data-end=\"2729\"\u003e→ It is an \u003cstrong data-start=\"2743\" data-end=\"2772\"\u003eH7 halogen bulb, 12V, 55W\u003c\/strong\u003e, genuine OEM part for Thunderbird and other bikes using H7 sockets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2844\" data-end=\"3023\"\u003e\n\u003cp data-start=\"2847\" data-end=\"3023\"\u003e\u003cstrong data-start=\"2847\" data-end=\"2889\"\u003eWhich Royal Enfield models use 594577?\u003c\/strong\u003e\u003cbr data-start=\"2889\" data-end=\"2892\"\u003e→ Verified for \u003cstrong data-start=\"2910\" data-end=\"2949\"\u003eThunderbird 350 and Thunderbird 500\u003c\/strong\u003e. Other RE models may use different sockets, so confirm before purchase.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3025\" data-end=\"3203\"\u003e\n\u003cp data-start=\"3028\" data-end=\"3203\"\u003e\u003cstrong data-start=\"3028\" data-end=\"3080\"\u003eWill this bulb fit my Classic 350 or Bullet 350?\u003c\/strong\u003e\u003cbr data-start=\"3080\" data-end=\"3083\"\u003e→ Only if your bike’s headlamp unit supports an \u003cstrong data-start=\"3134\" data-end=\"3147\"\u003eH7 socket\u003c\/strong\u003e. Some Classic\/Bullet models use different bulb types.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3205\" data-end=\"3410\"\u003e\n\u003cp data-start=\"3208\" data-end=\"3410\"\u003e\u003cstrong data-start=\"3208\" data-end=\"3259\"\u003eCan I use this bulb in non-Royal Enfield bikes?\u003c\/strong\u003e\u003cbr data-start=\"3259\" data-end=\"3262\"\u003e→ Yes. The \u003cstrong data-start=\"3276\" data-end=\"3294\"\u003e594577 H7 bulb\u003c\/strong\u003e works with \u003cstrong data-start=\"3306\" data-end=\"3381\"\u003eKTM Duke\/RC, Yamaha R15, Pulsar, Dominar, Hero Karizma, Honda CBR, etc.\u003c\/strong\u003e with H7 headlamp fittings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3412\" data-end=\"3573\"\u003e\n\u003cp data-start=\"3415\" data-end=\"3573\"\u003e\u003cstrong data-start=\"3415\" data-end=\"3458\"\u003eIs 594577 a high beam or low beam bulb?\u003c\/strong\u003e\u003cbr data-start=\"3458\" data-end=\"3461\"\u003e→ H7 bulbs are commonly used as \u003cstrong data-start=\"3496\" data-end=\"3523\"\u003eeither high or low beam\u003c\/strong\u003e, depending on the motorcycle’s headlamp design.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3575\" data-end=\"3790\"\u003e\n\u003cp data-start=\"3578\" data-end=\"3790\"\u003e\u003cstrong data-start=\"3578\" data-end=\"3648\"\u003eWhat’s the difference between OEM 594577 and aftermarket H7 bulbs?\u003c\/strong\u003e\u003cbr data-start=\"3648\" data-end=\"3651\"\u003e→ OEM bulbs ensure \u003cstrong data-start=\"3673\" data-end=\"3749\"\u003ecorrect fit, focused beam pattern, vibration resistance, and longer life\u003c\/strong\u003e compared to cheap aftermarket options.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3792\" data-end=\"3958\"\u003e\n\u003cp data-start=\"3795\" data-end=\"3958\"\u003e\u003cstrong data-start=\"3795\" data-end=\"3843\"\u003eHow long does the 594577 headlamp bulb last?\u003c\/strong\u003e\u003cbr data-start=\"3843\" data-end=\"3846\"\u003e→ Typically \u003cstrong data-start=\"3861\" data-end=\"3878\"\u003e400–500 hours\u003c\/strong\u003e of use, depending on riding conditions, voltage stability, and usage pattern.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3960\" data-end=\"4151\"\u003e\n\u003cp data-start=\"3963\" data-end=\"4151\"\u003e\u003cstrong data-start=\"3963\" data-end=\"4013\"\u003eCan I upgrade to LED or HID instead of 594577?\u003c\/strong\u003e\u003cbr data-start=\"4013\" data-end=\"4016\"\u003e→ Yes, but LED\/HID require aftermarket kits and may affect beam focus. OEM \u003cstrong data-start=\"4094\" data-end=\"4104\"\u003e594577\u003c\/strong\u003e ensures legal, safe, and direct replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4153\" data-end=\"4317\"\u003e\n\u003cp data-start=\"4156\" data-end=\"4317\"\u003e\u003cstrong data-start=\"4156\" data-end=\"4199\"\u003eHow to check if my bike uses H7 socket?\u003c\/strong\u003e\u003cbr data-start=\"4199\" data-end=\"4202\"\u003e→ Remove your headlamp bulb and check for \u003cstrong data-start=\"4247\" data-end=\"4261\"\u003eH7 marking\u003c\/strong\u003e on the base. If it matches, 594577 will fit directly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4319\" data-end=\"4505\"\u003e\n\u003cp data-start=\"4323\" data-end=\"4505\"\u003e\u003cstrong data-start=\"4323\" data-end=\"4373\"\u003eShould I replace both headlamp bulbs together?\u003c\/strong\u003e\u003cbr data-start=\"4373\" data-end=\"4376\"\u003e→ Recommended. Replacing both ensures \u003cstrong data-start=\"4418\" data-end=\"4474\"\u003ebalanced brightness and consistent color temperature\u003c\/strong\u003e, avoiding uneven visibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"UNDER THE HOOD","offers":[{"title":"Single Bulb","offer_id":50456741675303,"sku":null,"price":278.0,"currency_code":"INR","in_stock":true},{"title":"Complete Set(2 BULB)","offer_id":50456741708071,"sku":null,"price":534.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/5782977B-D7C9-4E9A-BEAD-CD6E8977AB5E.jpg?v=1758888351","url":"https:\/\/underthehood.co.in\/products\/royal-enfield-594577-h7-headlamp-bulb-12v-55w-thunderbird","provider":"UNDER THE HOOD","version":"1.0","type":"link"}