Fitment: for Chevrolet Silverado 1500 WT 4.3L 2007-2013, for GMC Sierra 1500 WT 4.3L 2007-2013, for Hummer H2 Base 6.0L 2004-2008, for Chevrolet Blazer Base, Xtreme, ZR2 4.3L 2005
Function:Regulates crankcase pressure by venting gases back into the intake manifold.
Durable, heat-resistant, chemical-resistant, ensures proper sealing and functionality.