Quick view Donaldson P105529 Donaldson Rubber 90° Elbow Diam: 51mm / 2" Compare MSRP: $28.00 Donaldson's 90° Rubber Elbow (51mm / 2" diameter)Flexible rubber adapters and elbows have smooth radii and inside surfaces to minimize flow resistance within the air intake system. Rubber adapters help to absorb vibrations and reduce intake noise... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List