Notes: Engine Intake Manifold Bolt -- New; 5/16-18X1.75,280M. 2002-2013 GMC Sierra 1500 4.3L V6 LU3 VIN: X. 1999-2002 GMC Sierra 1500 4.3L V6 L35 VIN: W. GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle.
