Mitsubishi Eclipse Cross Back Up Light Bulb Size

The Mitsubishi Eclipse Cross back up light utilizes 7440 and 921 bulb sizes for the rear illumination system. Data for the specific components covers the period from 2018 through 2024.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2022-2024	7440
2018-2020	921

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W.	7440
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921

Other Locations

Additional Notes

The Mitsubishi Eclipse Cross uses two distinct backup light bulb sizes across its production run, with the 7440 (T20) specified for 2022-2024 models and the 921 (T15) specified for 2018-2020 models.
The 7440 is a single-filament wedge bulb operating at 12V and 21W, conforming to ANSI standards for the US and Canadian markets.
The 921 is a wedge bulb rated at 12V and 16W, also conforming to ANSI standards for the US and Canadian markets.
The 7440 and 921 bulbs are not interchangeable. The T20 and T15 designations refer to different physical wedge base sizes, meaning a bulb from one generation of the Eclipse Cross will not fit the other.
The 7440 draws 21W compared to the 921's 16W, reflecting a difference in output between the two bulb types used across the Eclipse Cross model years.