N54 BOV Line Upgrade For BMW 1M, 135i, 335i, E89 Z4, E60 535i hyundai 2013–2017 – BMW 640i Gran

2013–2017 – BMW 640i Gran Coupe – N55

Includes an integrated velocity stack for maximum flow and comes pre-oiled with blue or red filter oil and a new clamp

this system ensures cooler

all while extending the longevity of your S55's turbochargers

N54 BOV Line Upgrade For BMW 1M, 135i, 335i, E89 Z4, E60 535i hyundai 2013–2017 – BMW 640i GranThe ARM N54 BOV Line Upgrade will help your BOV open and close completely and quickly. The ARM N54 BOV Line Upgrade allows you to replace the standard 1 8" line with a 1 4" line, doubling the size to allow ample pressure. Upgrading the diameter of the vacuum line running to the BOV ensures proper BOV function. With a smaller 1 8" line you can experience surging or over boosting if the BOV is not activating properly. HIGHLIGHTS Allows for 1 4" Vacuum