Used BMW 1 Series F20 / F21 Starter & Alternator Battery Cable Harness — genuine OEM B+ supply cable assembly that runs from the battery / rear power distribution box to the front-mounted starter motor and alternator. Suits 1 Series F20 / F21 fitted with the N13 1.6L or N20 2.0L petrol turbo engines. A common replacement when corrosion, rodent damage, or charging-system faults are traced to the main battery cables. Vehicle Fitment 1' F20 (07/2010 — 02/2015) N13 / N20 1' F20 LCI (05/2014 — 06/2016) N13 / N20 1' F21 (07/2010 — 02/2015) N13 / N20 1' F21 LCI (09/2014 — 06/2016) N13 / N20 Specifications Application Starter motor & alternator main supply (B+) cable harness Compatible Engines N13B16 1.6L Turbo Petrol / N20B20 2.0L Turbo Petrol Coding Not required — direct fit replacement Condition Used — removed from a running vehicle Condition This is a used genuine OEM part. It has been removed from a running vehicle and visually inspected.