2015-2020 Cadillac Escalade ESV. 2021-2024 Cadillac Escalade ESV. Notes Engine Intake Manifold Bolt -- New; M6X1X50.65. 2015-2020 Cadillac Escalade. 2021-2024 Cadillac Escalade. GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle.