Volvo 244 Back Up Light Bulb Size

The Volvo 244 back up light utilizes bulb size P21W and bulb size 1156 for the rear lighting system. Data for the specified vehicle covers the range from 1975 through 1989.

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
1975-1989	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The Volvo 244 uses the 1156 bulb size for the back up light across all specified model years, spanning 1975-1989.
The 1156 is an ANSI-standardized bulb type, meaning its physical and electrical specifications are governed by a recognized North American industry standard applicable in both the United States and Canada.
The 1156 bulb operates on a 12-volt electrical system and draws 21 watts, which is consistent with standard incandescent automotive reverse light applications.
The 1156 uses a BA15s bayonet base, a single-contact fitting where the "s" denotes a single pin, distinguishing it from the dual-contact BA15d variant with which it is not interchangeable.
Because the Volvo 244 back up light socket is designed for the BA15s base, substituting a bulb with a BA15d base would result in an incompatible fitment despite the similar physical appearance of the two base types.
The single-filament construction of the 1156 means it serves one dedicated function per bulb, as opposed to dual-filament types that handle two brightness levels or functions within a single housing.