Sierra dyno proven gains of 10HP and 12lbs/ft of torque! Precision machined from solid T-6061 billet aluminum to exacting specification for optimal performance. Combination serrated/helix design creates turbulence so that air/fule charge is thoroughly mixed for complete burn. The serrated entry reduces annoying whistling sound, especially at idle and cruising speeds. The additional space increases the volume between throttle and cylinder, improving volumetric efficiency. Available only for applications that show dyno-proven results. Fifty state legal (CARB EO#D-516-2)

THIS PART FITS:
2007-2008 GMC Yukon V8 4.8L
2007-2008 GMC Yukon V8 5.3L
2007-2008 GMC Yukon XL V8 4.8L
2007-2008 GMC Yukon XL V8 5.3L