Universal Air Filter
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K&N Universal Air Filter

Part No. RD-4400 Warranty Details  

Fit of this part varies by vehicle & equipment specs Type of Fit

K&N Oval Style Stacks for “Late Type” Hilborn Siamese Stacks - These filters are designed to be used with stock, uncut, Siamese ram tubes. Comes with removable aluminum top plate. To install, push Ram Tubes through rubber base and clamp at desired height. Oval top plate measures 9"L x 5 1/2"W, total height is 6 3/4". As with all K&N air filters, these are washable and reusable. Simply use K&N oil and cleaner to service your filter.

Product Features:
  • Low restriction
  • Washable and reusable
  • Outstanding filtration
  • Clamp-on design
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Flange Inside Diameter:2.25 in
Flange Length:0.75 in
Flange Type:Centered
Height:6.25 in
Material:Cotton Gauze
Outside Length:9 in
Outside Width:5.5 in
Shape:Oval
Top Type:Open
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