Mazda CX-3 Headlight Bulb Size

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.

High Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2021	9005	HB3	Check Price
2021	H11	H11	Check Price
2016-2019	9005 (With Halogen Capsule Headlamps)	HB3	Check Price

Low Beam Headlight

Years	Bulb Type	Shop
2021	H11	Check Price
2016-2019	H11 (With Halogen Capsule Headlamps)	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005	Check Price
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-2 base. Also approved in the US. 12V, 55W.	H11	Check Price

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Additional Notes

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.