• K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD - Stateside Performance - Cold Air Intakes - K&N Engineering - K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD
  • K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD - Stateside Performance - Cold Air Intakes - K&N Engineering - K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD
  • K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD - Stateside Performance - Cold Air Intakes - K&N Engineering - K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD
  • K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD - Stateside Performance - Cold Air Intakes - K&N Engineering - K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD
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KNN77-3103KC

K&N Engineering

K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD

K&N Performance Cold Air Intake System - 6.6L V8 | 2020-2026 GMC Sierra 2500HD

$422.99 USD
$422.99 USD
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In stock

The K&N Performance Air Intake System fits the 2020-2026 GMC Sierra 2500HD 6.6L V8 and delivers a guaranteed increase in horsepower and torque over the factory airbox.

Install Difficulty: DIY Possible
Bolts to factory intake mounting points with hand tools; typically installs in 60-90 minutes.

Product Overview

This cold air intake replaces the restrictive stock intake tract with a mandrel-bent aluminum intake tube for smoother, higher-volume airflow to the 6.6L V8.

The system pairs with a washable, reusable K&N High-Flow Air Filter using oiled cotton filter media, so it cleans instead of replaces.

The result is stronger throttle response and a more aggressive intake note on the Sierra 2500HD.

Features & Specifications

  • Fits: 2020-2026 GMC Sierra 2500HD
  • Fits 6.6L V8 only
  • Guaranteed horsepower and torque gain
  • Mandrel-bent aluminum intake tube
  • Washable, reusable High-Flow Air Filter
  • Oiled cotton filter media
  • Direct replacement for factory airbox

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2020-2026 GMC Sierra 2500 HD AT4
2024-2026 GMC Sierra 2500 HD AT4X
2020-2021 GMC Sierra 2500 HD Base
2020-2026 GMC Sierra 2500 HD Denali
2022-2026 GMC Sierra 2500 HD Pro
2020-2026 GMC Sierra 2500 HD SLE
2020-2026 GMC Sierra 2500 HD SLT
⚠ Submodel Fitment: If your submodel is not listed in the fitment table above, we cannot confirm fitment. Please contact us before purchasing to verify.

Shipping & Returns

Tracking is typically provided within 3–5 business days; items shipping direct from the manufacturer may take 5–7. Some items are made to order or may be backordered. Questions about stock? Reach us through live chat or email.

Warranty

All warranties are through the manufacturer and are facilitated by Stateside Performance. Some manufacturers require the end user to contact them directly; in that case we will point you to the right contact. Email us with any warranty questions.

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  • Free shipping over $250

    Free shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.

    Shipping policy 

  • 30-day returns

    Returns must be requested within 30 days of delivery. Parts must be new, unused, uninstalled, and in original packaging, with an RMA. Some items are final sale.

    Return policy