Mercedes Sprinter Tail Lamp Bulb 12V 21W – OEM | All Generations | #072601012190

A burnt-out tail lamp bulb on a Mercedes Sprinter means an unlit brake light, turn signal, or running light — a safety hazard and an immediate equipment violation that draws police attention and puts the van out of compliance on the road. This is the OEM 12V 21W P21W single-filament tail lamp bulb for Mercedes-Benz Sprinter vans, sold individually for brake light, tail light, and rear signal replacement in lamp housings that use the standard BA15s bayonet base.

What This Part Does

The P21W tail lamp bulb is a single-filament incandescent lamp used in the rear lighting assemblies of Mercedes Sprinter vans equipped with halogen or partial LED tail light configurations. The 21-watt rating provides the brightness required for brake light and rear turn signal functions, where higher intensity is needed for clear visibility to following traffic. The bayonet BA15s base seats and locks into the bulb socket with a quarter-turn, making replacement tool-free once the tail light housing or access panel is removed. On VS30 Sprinters with partial LED assemblies, the LED strip handles the running light function while the P21W bulb handles the brake, stop, and signal positions — meaning a failed bulb in a partial LED assembly causes a specific function to go dark while the LED strip remains lit.

Common Symptoms of a Failed Tail Lamp Bulb

• Brake light warning on the dashboard indicating a rear light circuit open
• One side of the rear lighting cluster dark for brake, stop, or signal function
• Rapid turn signal flasher rate — a hyperflash condition caused by reduced circuit load from a burnt bulb
• Bulb confirmed dark and filament visibly broken or burnt on inspection
• Failed inspection for brake lights or rear signals

When to Replace

Replace immediately when a rear lighting function is confirmed out and the bulb filament is found broken. Always replace in pairs when one side has failed — bulbs of the same age and mileage have similar remaining service life, and replacing both eliminates a repeat-side failure within a short interval.

Fitment

• 2001–2006 Mercedes-Benz / Dodge Sprinter (T1N) – Rear tail lamp positions
• 2007–2018 Mercedes-Benz / Dodge / Freightliner Sprinter (NCV3) – Rear tail lamp positions
• 2019+ Mercedes-Benz Sprinter (VS30) – Rear tail lamp positions (halogen and partial LED assemblies)

✔ 12V / 21W / P21W / BA15s bayonet base
✔ Single filament — for brake, stop, and signal positions
✔ Always verify your tail light assembly uses P21W bulbs before ordering — full LED assemblies do not use replaceable bulbs

Part Numbers

• Mercedes OEM: 072601012190 / A0726010121-90
• Cross-reference: P21W / BA15s
• SKU: 072601012190