Ferrari F355 Spider Back Up Light Bulb Size

The Ferrari F355 Spider back up light requires 1156 and P21W bulb sizes according to the provided specifications for the vehicle lighting system. Data for the specific components covers the range from 1996 to 1999.

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
1996-1999	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 Ferrari F355 Spider uses the 1156 bulb for the back up light across the 1996-1999 model years.
The 1156 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American standard applicable in both the United States and Canada.
The 1156 operates on a 12-volt electrical system and draws 21 watts, which is typical of incandescent automotive bulbs used in signaling and reversing light applications.
The 1156 is a single-filament bulb, meaning it serves one lighting function only, as opposed to dual-filament types that can handle two functions such as braking and running lights simultaneously.
The 1156 uses a BA15s bayonet base, where "BA15s" denotes a bayonet fitting with a 15mm base width and a single contact pin, which locks the bulb into its socket with a push-and-twist motion.
The single-contact BA15s base of the 1156 is not interchangeable with the BA15d base found on dual-filament bulbs such as the 1157, despite the two types sharing a similar physical profile.