Outer Air Filter, I.D. 2.5" O.D. 4.5"

4-1/2"O.D.x2-1/2"I.D.x9-3/4"H Fits Models ZD323, ZD326, ZD331 - w/D1005 3 cylinder diesel Meets or exceeds manufacturers recommended specs. Backed by Sierra’s Limited Lifetime Warranty. Backed by Sierra’s Limited Lifetime Warranty.