Mini Cooper Countryman Turn Signal Bulb Size

The Mini Cooper Countryman front turn signal uses P21W, 12174NA, or PY21W bulb sizes, while the rear turn signal requires P21W replacement bulbs. The chart covers 2011 to 2023 production years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2023	1156	P21W	Check Price
2021	12174NA	12174NA	Check Price
2017-2018	12174NA	12174NA	Check Price
2015-2016	2357NA (With HID Headlamps)	P21/5W	Check Price
2015-2016	7507 (With Halogen Capsule Headlamps)	PY21W	Check Price
2011-2014	2357NA (With HID Headlamps)	P21/5W	Check Price
2011-2014	12496 (With Halogen Capsule Headlamps)	12496	Check Price

Rear Turn Signal

Years	US Type	EU Type	Shop
2021-2022	1156	P21W	Check Price
2011-2019	1156	P21W	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156	Check Price
OEM part number. Natural amber glass variant. 12V.	12174NA	Check Price
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 26.9W/8W.	2357NA	Check Price
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W	Check Price
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W	Check Price
Philips/Osram part number. Halogen bulb, specialty application. 12V.	12496	Check Price

Other Locations

Additional Notes

The P21W bulb follows the ECE standard used in Europe and worldwide markets. It is a single-filament signalling bulb rated at 12V and 21W, fitted with a BA15s bayonet base. In the Mini Cooper Countryman, it serves as the rear turn signal bulb across the 2011-2019, 2021, and 2022 model years, and as the front turn signal bulb in the 2023 model year.
The PY21W bulb also conforms to ECE standards and operates at 12V and 21W, but it differs from the P21W in two key ways: its glass envelope is amber-tinted rather than clear, and it uses a BAU15s offset bayonet base rather than the straight BA15s base. This offset pin configuration prevents accidental substitution with other BA15s-type bulbs. The Mini Cooper Countryman (2015-2016) uses the PY21W for the front turn signal specifically on trims equipped with halogen capsule headlamps.
The 2357NA follows the ANSI standard used in North American markets. Unlike the single-filament P21W and PY21W, the 2357NA is a dual-filament bulb rated at 26.9W and 8W on its respective filaments, using a BAY15d bayonet base with two pins at different heights to prevent incorrect installation. Its natural amber glass coating eliminates the need for an amber lens. It is specified for the front turn signal on Cooper Countryman models from 2011-2016 equipped with HID headlamps.
The 12174NA is an OEM part number designation for a natural amber glass bulb rated at 12V. It is specified for the front turn signal on the Mini Cooper Countryman across the 2017-2018 and 2021 model years.
The 12496 is a part number used by Philips and Osram for a 12V halogen bulb intended for specialty applications. It is specified for the front turn signal on the Cooper Countryman from 2011-2014, but only on trims fitted with halogen capsule headlamps.
The front turn signal position on the Mini Cooper Countryman carries the most fitment complexity in these specifications. From 2011 through 2016, the correct front turn signal bulb depends on whether the vehicle is equipped with HID headlamps or halogen capsule headlamps, making headlamp type a critical factor before selecting a replacement bulb.
The BAY15d base used by the 2357NA and the BAU15s base used by the PY21W are both physically incompatible with the BA15s base used by the P21W, despite all three being bayonet-style fittings. Substituting one for another is not possible without modifying the socket.
The rear turn signal position uses exclusively the P21W across all listed model years, with no headlamp-dependent variants specified, in contrast to the front turn signal position.