The 20854 is a 12v 180 amp alternator, a new aftermarket direct replacement engineered to match the fit, form, and function of the original alternator. Specifications: - Voltage: 12V - Output: 180 amp - Rotation: Clockwise (CW) Vehicle Compatibility: - Makes: BMW, Mini (2014-2023) - Models include: Mini Cooper; BMW X1; Mini Cooper Countryman; Mini Cooper Clubman; BMW X2 - Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 104210-6720, 104210-6721, 104210-6722, 104211-8180, 104211-8181, 104211-8182, 104211-8183, 12-31-7-640-131, 12-31-7-640-132, 12-31-7-640-875 (plus 7 more on file). Why ePartsGlobal: specialist in heavy-duty starters, alternators, and charging-system electrical parts. Backed by a 1-year warranty, free shipping on orders over $19.95, and fast fulfillment. Ships from USA.