Kia Forte Headlight Bulb Size

Additional Notes

• The H1 bulb is a single-filament halogen type with a P14.5s base, operating at 55 watts. It serves as the high beam headlight across the Kia Forte for model years 2010-2016, representing the longest continuous run of a single bulb type in the high beam position within these specifications.
• The 9005 bulb, also designated HB3, is a single-filament halogen bulb with a P20d base rated at 65 watts. It appears in the high beam position for the 2017-2018 and 2023-2024 Forte, and also occupies the low beam position for the 2022-2023 model years.
• The H7 bulb is a single-filament halogen type with a PX26d base, rated at 55 watts. It is used in the high beam position for the 2021-2022 Forte and in the low beam position for the 2017-2018 (halogen capsule headlamp equipped) and 2021 model years.
• The H11 and H11B designations share the same L-shaped single-filament halogen design and PGJ19 base family, but they are not interchangeable. The H11B features a modified locking tab position that physically prevents installation of a standard H11 bulb in its socket. The H11B is specified for the low beam position on the 2010-2013 Forte, while H11 applies to the 2014-2016 models equipped with halogen capsule headlamps.
• The D5S is a discharge (HID) bulb type, operating through a high-voltage arc rather than a heated filament. It is specified for the low beam position on the 2017-2018 Forte equipped with HID headlamps, and it is not interchangeable with the H7 bulb used in the halogen variant of the same model years.
• The 2017-2018 Forte presents a critical fitment distinction: the low beam bulb size depends entirely on headlamp type. Vehicles with halogen capsule headlamps use the H7, while those with HID headlamps use the D5S. These two bulb types operate on fundamentally different electrical systems and cannot be substituted for one another.
• The high beam position on the Kia Forte uses three distinct bulb types across its model year range: H1 (2010-2016), 9005 (2017-2018 and 2023-2024), and H7 (2021-2022). None of these three types share a compatible base, making cross-year substitution impossible without modification.
• The 2024 Forte high beam specification carries forward the 9005 bulb from the 2023 model year, while no low beam specification is listed for 2024 in the provided data.
• The low beam position for the 2019-2020 Forte is not represented in the specifications, nor is the high beam for 2019-2020 and 2024 low beam, reflecting gaps in the listed model year coverage rather than any continuity of fitment.
• Among all bulb types present in these specifications, the H11B warrants particular attention during replacement, as its physical incompatibility with the more widely available H11 bulb is a known source of fitment errors. The tab geometry difference is subtle in appearance but prevents correct seating of the wrong type.