unithub front or rear brake caliper kit right + left assembly w/bracket 18-b4728 18-b4729 compatible for chevy avalanche silverado suburban escalade 1999-2013 (set of 2) front 18b4728 18b4729 is up for auction in Automotive. The current bid is $3.50, 97% below the $117.99 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.