Toyota C-HR Turn Signal Bulb Size

Additional Notes

• The 7440NA is the most frequently specified bulb across the Toyota C-HR turn signal positions. It is an ANSI-standard single-filament wedge bulb in the T20 form factor, rated at 12V and 21W, with natural amber glass that produces the required amber color without relying on a colored lens or housing.
• The rear turn signal position on the Toyota C-HR uses the 7440NA across all model years from 2018-2022, making it the only bulb type required for that position throughout the vehicle's listed production span.
• The front turn signal position does not share the same consistency. Three different bulb types appear across the 2018-2022 model years, meaning front turn signal bulbs are not interchangeable across all years without verifying the specific year first.
• The 12496 is a Philips/Osram part number for a 12V halogen bulb in a specialty application, specified for the front turn signal on the 2018-2019 C-HR.
• The 12961 is a Philips part number for a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base, rated at 12V and 5W. It is specified only for the 2021 front turn signal position, making it distinct from every other year in the dataset.
• The T10 and T20 designations refer to the outer width of the wedge bulb in millimeters, with T10 measuring approximately 10mm and T20 approximately 20mm. These two types are physically incompatible with each other's sockets.
• The 7440NA carries the ANSI designation, meaning its physical and electrical specifications are standardized across manufacturers in the United States and Canada, unlike the 12961 and 12496, which are identified by manufacturer part numbers rather than a universal standard.
• The front turn signal on the 2020 and 2022 C-HR both use the 7440NA, while the 2021 model year uses the 12961 instead, indicating that the 2021 front turn signal socket and circuit are not compatible with the bulb used in the surrounding model years.