Directly replace your Z4's restrictive plastic intercooler tube with aFe's BladeRunner free-flowing, heat-resistant aluminum tube.
Up to 40% flow increase over stock
TIG-Welded 2-1/2" To 3" Aluminum Tubing
Features Factory Style Quick-Connect With an O-Ring Seal
1/8" NPT Port is Provided for Connecting Sensors or Water Methanol Injection