Mini Cooper Countryman Parking Light Bulb Size

Additional Notes

• The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12 volts and 5 watts. The T10 designation refers to the bulb's tubular form factor, and the wedge base type requires no separate socket locking mechanism, as the base itself wedges into the housing.
• The Mini Cooper Countryman uses the 12961 bulb for the parking light position across the 2011-2023 model years, making it the sole bulb size specified for this function throughout that entire span.
• For the 2017-2019 model years, the 12961 fitment carries a conditional note specifying compatibility only with halogen capsule headlamp configurations. Vehicles from those years equipped with a different headlamp system fall outside the stated fitment condition.
• The 2020 model year carries a restriction noting the 12961 is not applicable to vehicles fitted with LED headlights. This indicates that the parking light assembly differs between headlamp variants in that year.
• The W2.1x9.5d base is a standardized wedge base type defined by its pin spacing and overall form. The designation reflects the contact width and insertion depth, which determine physical compatibility with a given socket.
• At 5 watts, the 12961 operates at a low power draw consistent with a parking or position light function, which is designed for continuous low-intensity illumination rather than primary forward lighting.
• The conditional fitment notes for 2017-2020 reflect that headlamp technology variants within the same model year can affect parking light assembly design, meaning the bulb size alone is insufficient to confirm fitment without also knowing the vehicle's headlamp configuration.