Nissan Van Back Up Light Bulb Size

The Nissan Van back up light uses a P21W bulb size for the specified model. The replacement chart covers 1987 to 1988 vehicle production years with corresponding bulb size specifications.

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
1987-1988	P21W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W

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Additional Notes

The P21W is the specified back up light bulb for the Nissan Van across the 1987-1988 model years.
The P21W follows the ECE (Economic Commission for Europe) standard, a regulatory framework adopted across Europe and numerous other markets worldwide.
This bulb operates on a 12-volt electrical system and draws 21 watts, which is typical for single-filament automotive signalling applications.
The P21W uses a BA15s bayonet base, where "BA" denotes a bayonet cap fitting, "15" refers to the 15mm base width, and the lowercase "s" indicates a single contact at the base.
As a single-filament bulb, the P21W is dedicated to one function, which in this application is the back up (reverse) light.
The BA15s single-contact base of the P21W is not interchangeable with dual-contact bayonet variants such as the BA15d, as the contact configurations are physically and electrically distinct.