The Volkswagen Jetta side marker utilizes a 12961 bulb size for the lighting components located on the exterior of the vehicle. Data for the specified component covers the period from 1995 to 2009.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Volkswagen Jetta uses the 12961 bulb across all listed front side marker applications, making it the sole bulb type present in these specifications.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, fitted with a W2.1x9.5d base and rated at 12 volts and 5 watts.
The W2.1x9.5d base is a wedge-type connection, meaning the bulb is held in place by tension from the socket rather than by a bayonet or screw mechanism.
At 5 watts, the 12961 operates at a low wattage consistent with its role as a side marker, which is a passive visibility lamp rather than a primary illumination source.
The 12961 fitment on the Volkswagen Jetta spans the 1995-1996 and 2006-2009 model years without any noted conditional restrictions.
For the 2015-2016 Jetta, the 12961 bulb applies specifically to vehicles equipped with halogen capsule headlamps, indicating that other headlamp configurations on those model years may require a different front side marker bulb.
A VIN-based fitment restriction exists for the 1999 Jetta, where the 12961 bulb applies only to vehicles up to VIN 1H-X-245 000, meaning production sequence determines compatibility for that model year.
The 1997-1998 Jetta carries the 12961 specification without conditional notes, distinguishing those years from the adjacent 1999 entry where a VIN cutoff applies.