Air Filter, Primary Wrap, Donaldson P521686 Equivalent: CAT 4W-7103, In Stock FREE Shipping on orders over $2000 Login for price Description Technical Information:Outer Diameter: 569 mm (22.40 inch)Inner Diameter: 556 mm (21.89 inch)Length: 609 mm (23.98 inch)Type: PrimaryStyle: WrapCross Reference:Caterpillar: 4W-7103Related Parts:P529552 - Air Filter, Primary Round. Equivalent Items Foam Air Prefilters, Baldwin PA3633... Login for price Air Filter, Primary Wrap, Energy Ch... Login for price