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Vehicle Info NeededK&NPART NUMBER: 599-RX-4140
Round Straight X-Stream Clamp-On Air Filter
$20999
7 left in stock
Ships on Sep 08, 2026
Lowest Price Guarantee3.531'' (90 mm) Flange Diameter
Round Straight X-Stream Air FilterFlange Inside Diameter: 3.531" (90 mm) Flange Length: 0.719" (18 mm) Flange Type: Centered Height: 5.969" (152 mm) Base Outside Diameter: 4" (102 mm) Top Outside Diameter: 4" (102 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 Height4.7
Package Width4.8
Package Length7.2
Weight0.6 PG
Part CategoryPerformance Parts
ShapeRound
QuantitySold individually
Overall Length5.75 in (146.1 mm)
MaterialRubber Flange
Carb/Air Horn Dia3.5 in (88.9 mm)
Top StyleX-Stream
Flange TypeCentered
Filter Re-Oiling Amount0.5 oz (15 ml)
Air Filter StyleConical
Air Filter Bottom Measurement (In.)4.000 diameter
Air Filter Top Measurement (In.)4.000 diameter
Part FitmentUniversal
Inlet Flange Inside Diameter3.5 in (88.9 mm)
Flange Offset0 in (0 mm)
Diameter Outside4 in (101.6 mm)
Flange Angle0 degrees
Vendor Part NumberRX-4140
Package Qty1
Package TypeEA
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