NGK Double Platinum Spark Plug Box of 4 (PRF6A-11) Roofs & Roof Accessories>Storage Racks Since the heat exchanger sits

Since the heat exchanger sits front and center in the M3 and M4

air bypass valve and engine vacuum lines as well as a replacement rubber inlet hose

Kit includes press fit steel dowel pins

Drivers who prefer a more subdued sound will opt for (PN140281)

NGK Double Platinum Spark Plug Box of 4 (PRF6A-11) Roofs & Roof Accessories>Storage Racks Since the heat exchanger sitsNGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior anti fouling, improved fuel efficiency and lower emissions. High grade pure alumina ceramic and 98% pure copper core prevents spark plug