This is the air filter restriction gauge for 2003-2009 GMC C4500, C6500, C7500, and C8500 trucks. This meter mounts inside the air filter box. This gauge lets you know how dirty the air filter is, just be looking at it. Replace your old, faulty gauge with this brand new factory original part from General Motors at a fraction of the dealer price.

New. Never Installed. OEM Part. Bulk Overstock

GM Part # 15010312 (number on the item)

Item is number 2 in the GM diagram