K&N SU-4002 High-Flow Air Filter for 2003-2009 Suzuki LT-Z400/2003-2006 Kawasaki

Vehicle Fitment

• 2003-2009 Suzuki LT-Z400 QuadSport Z
• 2003-2006 Kawasaki KFX400
• 2004-2008 Arctic Cat DVX 400
• 2006-2007 Arctic Cat DVX 400 TS

Fitment Notes

• Direct replacement for OEM air filter; fits into stock airbox with application-specific sealing bead - no modification required.

Features

• Pleated cotton gauze media for high airflow and efficient engine breathing
• Washable and reusable - reduces need for frequent replacement
• Pre-oiled and ready to install out of the box
• Large filtration surface for high dirt-holding capacity and long service intervals
• Designed for off-road / ATV / UTV use - performs even in dusty or muddy conditions
• Improved horsepower and acceleration compared to stock paper filter
• Application-specific sealing bead ensures a precise, airtight fit in OEM airbox
• No carb jetting or fuel-management adjustments typically required after installation

Specifications

• Filter Shape: Tapered Conical
• Base Outside Diameter: 4.50 in (114 mm)
• Top Outside Diameter: 3.50 in (89 mm)
• Height: 5.375 in (137 mm)
• Filter Media: Multi-layer cotton gauze
• Washable / Reusable: Yes
• Filter Re-Oiling Amount: approx. 0.74 oz (22 ml) after cleaning
• Quantity: 1 x Air Filter
• Position: Intake airbox filter for ATV/UTV

Included Components

• 1 x K&N SU-4002 High-Flow Air Filter
• 1 x K&N sealing grease (for airbox lip sealing)

Product Description

The K&N SU-4002 High-Flow Air Filter is engineered for off-road ATVs and UTVs - specifically compatible with Suzuki LT-Z400, Kawasaki KFX400, and Arctic Cat DVX 400 (plus DVX 400 TS) models within the model years listed above. With its tapered conical design and pleated cotton gauze media, SU-4002 offers significantly improved airflow over stock paper filters, supporting better engine breathing, stronger throttle response, and enhanced acceleration - ideal for aggressive riding and challenging terrain.

Built to endure tough off-road conditions, SU-4002 features a large filtration surface and high dirt-holding capacity. The filter is washable and reusable, and comes pre-oiled and ready to install, making maintenance simple and cost-effective. Because of its application-specific sealing bead and OEM-airbox fitment, installation requires no trimming or modification. For ATV and UTV owners who want durable, long-lasting filtration and a performance boost - especially in dusty, muddy, or high-load conditions - SU-4002 is a top-tier upgrade over stock filters.