The 9003 bulb is a double filament variety, though it has a more controlled output than the other bulb. The 9003 beat such restrictions, and it made its way to vehicle headlamps. At the moment, you may find that the bulbs sell using each other’s identity. For example, you may want an H4 bulb, and a dealer recommends that you go for the 9003.

We have a wide selection of H4 / 9003 Bulbs for your headlights on your car or truck. Upgrade to our H4 LED headlight bulbs, H4 HID conversion kits, or H4 HID replacement bulbs to get the automotive lights you deserve.

2019年9月17日 · While H1, H3, and H7 bulbs all have just one filament, the 9003 (HB2/H4) is a dual-filament bulb. Instead of only one wire producing light, the 9003 (HB2/H4) bulb has two. This allows the 9003 (HB2/H4) bulb to serve as both the main beam and …

2020年9月18日 · Sinoparcel 9003/ H4 halogen bulbs have 55W power and up to 1900LM brightness, about 3800K color temperature, wider and more clarity light output than standard halogen bulb, and you can still see the road clearly in greasy weather and rainy weather

Buy NAPA OE Quality Headlight Bulb - LMP 9003N online from NAPA Auto Parts Stores. Get deals on automotive parts, truck parts and more.

2022年10月19日 · The 9003 vs H4 bulbs are two very different models that serve different purposes. The 9003 is meant for use on the road, while the H4 is better suited for off-road vehicles. Additionally, the H4 has a different base than the 9003, so it …

Experience unparalleled brightness, longevity, and precision with 100% Philips quartz glass and high-quality halide salts, rivaling Osram CBI bulbs at 5500K. The XB bulbs offer dual-beam capability, making them ideal for both primary and secondary lighting patterns.

国外论坛用的比较多，其实是inb4lock的简写，直译的话是指：在帖子被锁之前....