K&N Air Filter For Harley Sportster 2004-2013

K&N High-Flow Performance Air Filter for Harley-Davidson Sportster (2004–2013)

Experience a significant boost in V-Twin performance with the K&N High-Flow Air Filter, specifically engineered for 2004–2013 Harley-Davidson Sportster models. Designed for riders who demand more from their 883cc or 1200cc Evolution engine, this premium air filter replaces the restrictive factory paper element with race-proven filtration technology. By maximizing airflow volume, K&N helps your “Sporty” achieve crisper throttle response, improved acceleration, and the measurable horsepower gains needed for both city carving and highway cruising.

High-Flow Cotton Gauze Filtration Technology

The K&N HD-8834 features four to six layers of surgical-grade oiled cotton gauze media, pleated between epoxy-coated aluminum wire mesh. This advanced construction creates a massive surface area that allows for low-restriction airflow while maintaining filtration levels critical to engine longevity. Unlike standard filters that act as a barrier, K&N’s deep-pleat design traps harmful dust and debris within the media layers, ensuring your Stage 1 intake remains efficient even as it accumulates miles.

Washable and Reusable “Lifetime” Filter

The K&N replacement air filter is a sustainable, cost-effective upgrade that is designed to last the entire life of your motorcycle. It is completely washable and reusable, requiring cleaning only every 50,000 miles under normal street riding conditions. By using a K&N Recharger kit, you can easily restore the filter to like-new performance, eliminating the need for expensive disposable paper filters. Every unit is backed by K&N’s legendary Million-Mile Limited Warranty, making it the ultimate Harley-Davidson maintenance solution.

Direct OEM Fitment – Replaces Part #29331-04

Engineered as a precision drop-in replacement for Harley-Davidson OEM #29331-04, this filter requires no custom fabrication, fuel re-mapping, or permanent modifications for a standard setup. It fits perfectly inside your factory oval air cleaner housing. Fitment is confirmed for the following Sportster models:

• Iron 883: XL883N (2009–2013).
• Forty-Eight: XL1200X (2010–2013).
• Nightster: XL1200N (2007–2012).
• Sportster Custom: XL883C and XL1200C (2004–2013).
• SuperLow: XL883L (2011–2013).
• Note: Not compatible with XR1200 models or Screamin’ Eagle aftermarket backing plates.

The Essential Stage 1 Foundation

For riders looking to build a Stage 1 performance kit, the K&N High-Flow Air Filter is the critical first step. While it provides an immediate improvement in engine clarity on its own, pairing this filter with a high-performance exhaust and an EFI fuel tuner (such as the Vance & Hines FP3 or FP4) will unlock the full torque and horsepower potential of your Evolution engine. The improved laminar airflow ensures your engine runs cooler and more efficiently, even during spirited riding.

Simple DIY Installation

Upgrading your Sportster air intake is a 10-minute task that requires only basic hand tools. The K&N HD-8834 features a durable, flexible frame and a precision-molded sealing bead to ensure a 100% airtight fit against the throttle body or carburetor. This prevents “dirty air” bypass and ensures your engine receives only the cleanest, highest-velocity air possible.

Stop settling for restrictive airflow. Upgrade to the K&N High-Flow Air Filter today and experience the ultimate in Sportster performance!