What lumen led bulb should you use to replace a standard 921 bulb?

To replace a standard 921 bulb, you should look for an LED bulb that produces approximately 500-600 lumens, as the original 921 bulb typically emits around 500-600 lumens. Ensure the LED bulb is compatible with the fixture and has a similar color temperature (usually around 3000K for a warm white light). Additionally, check for appropriate wattage equivalency; LED options usually range from 5 to 10 watts to match the standard bulb's output.