The Kia Rio turn signal requires a bulb size of 1156NA for the specific lighting component located on the exterior of the vehicle. Data for the bulb size covers the range from 2008 to 2008.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1156NA is a single-filament bulb operating at 12V and 21W, built to ANSI standards for the US and Canadian markets. It uses a BA15s bayonet base and features natural amber glass to produce the required turn signal color without a separate amber lens.
The 2357NA is a dual-filament bulb rated at 12V with a high filament draw of 26.9W and a low filament draw of 8W. It uses a BAY15d bayonet base, which has two offset pins to prevent incorrect installation, and also carries natural amber glass.
The PY21W is an ECE-standard single-filament amber bulb rated at 12V and 21W. It uses a BAU15s bayonet base, which has asymmetrically offset pins. This base type is not interchangeable with the BA15s or BAY15d bases used by the ANSI-standard bulbs in the same specifications.
The 12496 is a specialty halogen bulb identified by its Philips and Osram part number rather than an ANSI or ECE designation, rated at 12V.
On the Kia Rio, the front turn signal position for the 2019-2020 model years lists two different bulb sizes depending on headlamp type. Vehicles equipped with LED headlamps use the 12496, while those with halogen capsule headlamps use the 2357NA.
The rear turn signal for the 2019-2020 model years lists only the 12496 with no headlamp-type condition, unlike the front position for the same years.
The front and rear turn signal positions share the same bulb size for the 2023 model year, both specifying the PY21W, whereas earlier model years frequently use different bulb types between the two positions.
For the 2006-2009 model years, both the front and rear turn signal positions on the Kia Rio specify the 1156NA, a single-filament bulb. The 2010-2011 model years retain the 1156NA at the rear but move to the dual-filament 2357NA at the front.
The 2357NA and 1156NA share the same natural amber glass construction and 12V rating, but their base types differ. The dual-pin offset BAY15d base of the 2357NA and the single-pin BA15s base of the 1156NA make the two bulbs physically incompatible with each other's sockets.
The 2001-2002 model years specify the 2357NA for the front turn signal and the 1156NA for the rear, a split also seen in the 2010-2011 model years, reflecting the use of a dual-filament bulb at the front and a single-filament bulb at the rear.