BMW Motorcycle R60/6 front and rear turn signal bulbs utilize a P21W size across all applications. The replacement chart covers 1973 to 1976 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The BMW Motorcycle R60/6 uses the P21W bulb type across all listed positions and model years, covering both front and rear turn signals from 1973-1976.
The P21W is an ECE-standardized bulb, meaning its specifications conform to European and internationally recognized automotive lighting regulations rather than SAE standards used in North American markets.
P21W bulbs operate at 12 volts and consume 21 watts, which is the wattage conventionally associated with turn signal and stop light functions in European vehicle lighting systems.
The P21W uses a BA15s bayonet base, where "BA" denotes a bayonet cap fitting, "15" refers to a 15mm base width, and the lowercase "s" indicates a single-contact configuration.
The single-filament construction of the P21W means the bulb serves one lighting function per housing, distinguishing it from dual-filament variants such as the P21/5W, which combines two functions in a single bulb.
The BA15s base features offset pins positioned symmetrically around the base, allowing the bulb to be inserted in any rotational orientation, which is a relevant fitment characteristic for replacement purposes.
The R60/6 uses an identical bulb specification for both the front and rear turn signal positions, meaning a single bulb type serves all four turn signal housings on the motorcycle.