Set of (4) OEM Champion Spark Plugs for all BMW's with the B48 engine
Champion RERX4ZWYPB (OE245)
These OEM spark plugs will fit all 2016+ B48 engines, which feature a 2.0L single-turbo I4 design. These spark plugs are direct OEM replacements and are recommended to be changed every 45,000 miles on stock engines.
B48's running a tune such as the Jb4, Cobb, or MHD should replace these every 20,000 miles as the increased boost levels will wear down the plugs at a faster rate.
Symptoms of bad spark plugs are misfires, slow starts, rough idling, or poor acceleration and performance.