Get more performance from your 2006-'10 Chevrolet Silverado HD/GMC Sierra HD V8 6.6L Duramax engine (LBZ/LMM) with aFe Power's new BladeRunner intercooler with a 74-percent increase in airflow over the factory stock intercooler. The BladeRunner's 3.15-inch bar/plate design allows for more heat dissipation at a quicker pace. The end tanks are of 3/16-inch TIG welded aluminum plate with multidirectional vanes to direct airflow through the core for max cooling. About $1500.