8) 90° rubber elbow, 4" i.d. x 3.5 "

90° rubber elbow, 4" i.d. x 3.5 " .19 " wall thickness. Can be connected to throttle body and to #6. Shown with 3.5" o.d. aluminum tubing.

See pages 9-10 and 9-11 of our Free Guide to Ducting for installation.