Air and Fuel› Air Cleaners, Filters, Intakes and Components

K&N Engineering

K&N Universal Adapter 6 Inch Filter 3.5in Coupler

$25.99

SKU: K001 21512-1

In Stock
In Stock
Ships by Jul 29
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The K&N Air Filter Velocity Stack Flange (21512-1) is an adapter designed for custom intake setups. It allows for the use of a 6-inch air filter with an 82mm inner diameter and a 3.5-inch outer diameter. This flange is made from a hard plastic material.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandK&N Engineering
Part NumberK001 21512-1

Videos

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Buy with Confidence

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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