01-04 Duramax LB7 HSP 3.5" Turbo Horn O Ring Seal Suspension performance

performance

advance control integrated chip eliminates the occasional error code caused by resistor based devices

Eliminate the costly exhaust manifold cracks prevalent in the factory exhaust manifold

Ability to support 600hp

01-04 Duramax LB7 HSP 3.5" Turbo Horn O Ring Seal Suspension performance01 04. 5 Duramax LB7 This is the high flow 3. 5" Turbo horn for LB7 Duramax from HSP Diesel. Adds 15+Horsepower, faster spool up, lower egt's, more Turbo whistle. Stock horn is only 2 3 8", This is 3 1 2" that is a huge increase in airflow! Does not fit CA Smog Package Trucks. Comes ready to install with new bolts and O Ring Seal! Comes powder coated your choice of color. These are made to order. Cannot ship to California