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Vehicle Info NeededK&NPART NUMBER: 599-RX-4990
RX-4990 Round Tapered X-Stream Clamp-On Air Filter
$12599
3 left in stock
Ships on Oct 19, 2026
Lowest Price Guarantee3'' (76 mm) Flange Diameter
Round Tapered X-Stream Air FilterFlange Inside Diameter: 3" (76 mm) Flange Length: 1.75" (44 mm) Flange Type: Centered Height: 5.563" (141 mm) Base Outside Diameter: 6" (152 mm) Top Outside Diameter: 5" (127 mm)
- Pleated filter built in top
- Washable and reusable
- Low restriction
- Clamp-on design
K&N XStream Top Universal Air Filters are designed with a filter within the filter's top. This feature takes performance to the next level by providing higher air flow and outstanding filtration. All XStream air filters contain ultra-strong, molded rubber flanges to reduce vibration and provide a secure attachment. These washable/reusable air filters can be stretched up to 1/16" (1.5mm) to fit in-between sizes.
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Features:
- Designed to Increase HP and Acceleration
- Built-in Pleated Filter in Top
- Numerous Applications
- Ultra-Strong Rubber Flanges
Part TypeAir Filter
Product LineK&N XStream Universal Air Filters
BrandK&N
Package Height5.563 in (141 mm)
Package Width7.0
Package Length8.0
Weight1.65 PG
Weight1.4 lb (0.7 kg)
Part CategoryPerformance Parts
Flange Length1.75 in (44 mm)
Top MaterialNone
ShapeRound Tapered
Carb/Air Horn Dia3 in (76.2 mm)
Top StyleX-Stream
Air Filter Large End Diameter6 in (152 mm)
Air Filter Bottom Measurement (In.)6.000 diameter
Air Filter Top Measurement (In.)5.000 diameter
Base Outside Diameter6 in (152 mm)
Frame DesignFlexible
Flange Angle0 degrees
Flanges1
QuantitySold individually
Overall Length5.563 in (141.3 mm)
MaterialRubber Base
Air Filter ShapeRound Tapered
Top Outside Diameter5 in (127 mm)
Oil IncludedYes
Flange TypeCentered
Filter Re-Oiling Amount0.96 oz (28 ml)
Air Filter StyleConical
Flange Inside Diameter3 in (76 mm)
Part FitmentSemi Universal
Inlet Flange Inside Diameter3 in (76.2 mm)
Flange Offset0 in (0 mm)
WashableYes
Diameter Outside6 in (152.4 mm)
Vendor Part NumberRX-4990
Package Qty1
Package TypeEA
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