K&N

6-Inch Air Filter Velocity Stack Flange

$25.99

SKU: 21512-1

In Stock
In Stock
Ships by Aug 29
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

This K&N air filter velocity stack flange, part number 21512-1, is engineered to facilitate custom intake systems, enabling the use of a 6-inch air filter. Constructed from durable hard plastic, this component offers precise dimensions with an inner diameter of 82mm and an outer diameter of 3.5 inches. It serves as a replacement part for the K&N 57-1530-1 Dodge Ram intake system and is also compatible with other custom setups requiring a 3.5-inch coupler to connect to a 6-inch air filter. This adapter expands the filter application possibilities for custom air intake builds. While it is listed as having universal fitment, it is a direct replacement component for the 57-1530-1 Dodge Ram intake. It is crucial to verify the specific requirements of your custom intake setup to ensure compatibility with the 3.5-inch OD and 82mm ID specifications of this flange. The package includes one flange.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandK&N
Part Number21512-1
CategoryAir and Fuel

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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