Derale 17" Standard Rotation Rigid Race Fan, Aluminum Blade Gas Gauge ALL68322 has tabs with 1/2"

ALL68322 has tabs with 1/2" holes and mounts directly onto a 3" axle tube

300" of shims under the spring

Two 10 AN Male to 5/8 in Hose Barb

2003-2007 GMC C5500 Topkick

base valve assembly and premium Teflon heims

Derale 17" Standard Rotation Rigid Race Fan, Aluminum Blade Gas Gauge ALL68322 has tabs with 1/2"Providing maximum full time airflow across the rpm range, this standard rotation 17" rigid race fan features a sturdy black powder coated steel hub, 6 aluminum fan blades and is rated up to 8,000 rpm. Specifications: Diameter: 17" Aluminum fan blades, Maximum full time airflow, Rated up to 8,000 RPM, 17" standard rotation rigid fan designDerale has been the leader in performance cooling for decades. Derale prides themselves in manufacturing high