Motorcycle Oil Filter with Synthetic High-Flow Media, M20 x 1 Thread and KN-138 Vehicle-Specific Fit – K&N

A motorcycle oil filter captures engine contaminants while maintaining oil flow in compatible powersports applications. The K&N KN-138 uses pleated synthetic high-efficiency media and heavy-duty construction, with laboratory testing stated for capacity and burst strength.

A part-specific bypass and pressure-relief valve supports the intended lubrication system, and an integrated welded nut simplifies removal during oil changes. The filter works with synthetic, conventional and blended motor oils and is rated by the source for up to 20,000 miles of protection when the vehicle’s service requirements allow. Fit is vehicle specific, so verify KN-138 application, M20 x 1 thread and dimensions before installation.

Specifications

• Brand: K&N
• Model and part number: KN-138
• Product: Powersports engine oil filter
• Fit: Vehicle specific
• Thread size: M20 x 1 mm
• Outside diameter: 2.81 in
• Dimensions stated: 3.35 x 2.99 x 2.95 in
• Filter media: Pleated synthetic high-efficiency media
• Oil compatibility: Synthetic, conventional and blended oils
• Protection interval stated: Up to 20,000 miles
• Valve: Part-specific bypass and pressure-relief valve
• Removal feature: Integrated welded nut
• Testing stated: Laboratory tested for capacity and burst strength
• Included: 1 oil filter
• Application check: Verify KN-138 fit before use