The recommended type is H3 and cap also should have the base PK22s. When you drive Hyundai Sonata at dark time, you’ll certainly need front lights on. Especially lamps for Sonata with plus capacity and 12 V voltage may be broken soon. You should keep up with Hyundai’s recommendation to put into vehicle headlights only 60/55 W capacity bulbs. In production of 1992 model year cars with engine code 4G62 the brand used high technology lamps. Use up-to-date optical devices in Hyundai Sonata 2.0 headlight system. Anyway, cars with 2.0 engine made by Hyundai will occasionally need bulb exchange.
Usually you won’t place the P14.5S lamp type into holder in 2007 Sonata without help. But power of 55 W is just optimal feature, real light of 12 V lamp may be much stronger. Don’t try to take headlight in Sonata to pieces – holder in 2.4 motor cars is easily relieved. The needed cap type should be only H4, otherwise Hyundai made in 1996 won’t take the bulb.
Observe all recommendations and your 2003 Hyundai Sonata will serve with no problems. By taking the bulb holder in Sonata cars with 2.5 motor be careful not to destroy it. It’s easily bad idea for 2001 Hyundai owners to buy other than H3 type bulbs with base different from PK22s. Provide exactly needed voltage of 12 V and don’t forget nominal power 55 W.