Tuff Country 73-87 Chevy Suburban 1/2 Ton 4x4 4in Lift Kit Heavy Duty (No Shocks) Windshields>Windshields The unique IRF design utilizes

The unique IRF design utilizes the depth of the OE filter box for maximum filter media and 2 layers of synthetic media provide maximum airflow for best performance results within the confines of the stock OE filter box

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The built-in 3/8 IN port hole allows for easy connection to a PCV line

We recommend installing the rear frost plug plate when the transmission is removed

The high temperature injection molded silicone bellow coupler is designed to connect to a (3-1/2 x 4)"OD tube and is 3-1/2" long

Tuff Country 73-87 Chevy Suburban 1/2 Ton 4x4 4in Lift Kit Heavy Duty (No Shocks) Windshields>Windshields The unique IRF design utilizesTuff Country 73 87 Chevy Suburban 1 2 Ton 4x4 4in Lift Kit Heavy Duty (No Shocks)