Image 1 of 1 85-92 tuned port center egr block plate Sale Price: $18.50 Original Price: $23.50 85-92 tuned port center block off plate with gasket and 8mm includebolts 5/16 bolts might be required and not included. Add To Cart Added! 85-92 tuned port center block off plate with gasket and 8mm includebolts 5/16 bolts might be required and not included.