Fits: 2011 Chevy Silverado/GMC Sierra 2500HD/3500HD LML Duramax Diesel
 

Replace your leaking power brake hydro booster and restore braking power with this genuine GM replacement. These boosters connect the brake pedal apply system to the master cylinder. The brake booster is a force multiplier that causes additional force to be applied to the master cylinder for additional braking power. This is quite the large upgrade over the 2001-2010 boosters since the 2011 brakes were much stronger. 

OE #1781036 , 0777599 , 19371361

• Some of the 01-07 trucks need to have the rod hole drilled out slightly to 41/64th

Blog Post for install and information - https://injectedmotorsports.com/01-10-hydroboost-brake-booster-fix-upgrade