Air and Fuel Air Cleaners, Filters, Intakes and Components

K&N Engineering

K&N 08-15 Harley Davidson Street Metal Intake System - Chrome

$208.95

SKU: K001 RK-3947X

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In Stock
Ships by Jul 31
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: RK-3947X

K&N's Street Metal Series High-Flow Air Intake Systems provide attractive styling, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle. This series completely eliminates the stock OE air cleaner and replaces it with a high-flow K&N air intake system, increasing power. This intake system uses an extra tall K&N air filter, which means even more air flow and longer service intervals than standard RK-series air intake filters. Larger or custom engine builds most often benefit from higher levels of air flow, so the extra tall filter designs are a perfect choice for more powerful bikes. The K&N high-flow air filter is washable, reusable, pre-oiled and ready for installation, making an already easy install even faster. Just how fast Less than 90 minutes, in most cases. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. A durable mounting gasket is also included to help absorb vibration. The brilliant shine on this custom flare-shaped chrome cover give this air intake makes an impression on and off the road.

K&N's Street Metal Series High-Flow Air Intake Systems provide a good looking appearance, offer increased airflow and deliver more horsepower & torque to your Harley-Davidson motorcycle.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The K&N RK-3947X Street Metal high-flow intake system is specifically engineered to enhance the performance of Harley-Davidson Twin Cam 96 and 103 V-Twin engines. It is designed to optimize airflow by collecting and delivering a significantly higher volume of oxygen-rich cold air to the engine. This increased and colder airflow contributes to an estimated increase of 8.1 horsepower and 8.82 lb-ft of torque (based on dyno testing on a 2015 Harley-Davidson Street Glide 103ci). The system aims to sharpen throttle response and improve power delivery across the RPM range, particularly at lower RPMs, while also enhancing the engine's sound.

Fitment

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Specifications

BrandK&N Engineering
Part NumberK001 RK-3947X

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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