Nissan 210 Back Up Light Bulb Size

The Nissan 210 back up light requires a P21W bulb size for proper installation and function within the lighting assembly. Data for the specified bulb covers the range from 1979 to 1982.

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
1982	P21W
1979-1980	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 sole bulb type listed across all specified model years of the Nissan 210, covering 1979-1982 for the back up light position.
The P21W is an ECE-standard single-filament bulb rated at 12 volts and 21 watts, designed for signalling applications such as back up lights.
P21W bulbs use a BA15s bayonet base, which is a single-contact bayonet fitting with a 15mm collar width.
The BA15s base is not interchangeable with BA15d (dual-contact) bayonet bases, as the contact configuration differs between the two types.
The ECE designation on the P21W indicates the bulb conforms to the United Nations Economic Commission for Europe regulatory standard, which is applied across European and many worldwide markets.