Mazda CX-3 high beam headlight uses 9005 bulb size while low beam uses H11 size. The chart covers 2016 to 2021 with replacement specifications for each production year.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H11 is a single-filament halogen bulb operating at 12V and 55W, built to the ECE standard used across Europe and internationally, though it also carries approval for use in the United States. It uses a PGJ19-2 base and serves as the low beam bulb across the Mazda CX-3 model years covered in these specifications.
The 9005 is a single-filament halogen bulb operating at 12V and 65W, built to the ANSI standard applied in the United States and Canada. It uses a P20d base and functions as the high beam bulb in the CX-3 across the halogen capsule headlamp configurations listed.
The 9005 draws 65W compared to the H11's 55W, reflecting the higher power output typically associated with high beam operation versus low beam operation.
The PGJ19-2 base of the H11 and the P20d base of the 9005 are physically distinct and not interchangeable. Each base type is keyed to fit only its corresponding socket, which prevents cross-installation between the two bulb types.
For the 2021 Mazda CX-3, both the high beam and low beam positions use the H11 bulb, making it the only bulb type required for the headlight system in that year.
For the 2016-2019 model years, the high beam position uses the 9005 and the low beam position uses the H11, with both positions carrying the "With Halogen Capsule Headlamps" condition, indicating these sizes apply specifically to that headlamp configuration.
The H11 and 9005 are governed by different international standards, ECE and ANSI respectively, which means their design and testing requirements originate from separate regulatory frameworks despite both being 12V halogen bulbs.