SKU:KNN81-0812
K&N Engineering
K&N Oil Separator Catch Can - 6.6L | 2020-2025 GMC Sierra 2500HD
K&N Oil Separator Catch Can - 6.6L | 2020-2025 GMC Sierra 2500HD
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The K&N Oil Separator Catch Can fits the 2020-2025 GMC Sierra 2500HD 6.6L Duramax and captures blowby oil before it reaches the intake tract.
Product Overview
This catch can replaces the factory PCV line from the crank case and routes vapor through a high-capacity reservoir that traps oil.
Keeping oil out of the intake helps prevent carbon buildup, power loss, and long-term engine damage on the 6.6L Duramax.
Factory-style snap-on hose connections mean no cutting, and the reservoir empties without tools.
Features & Specifications
- Fits: 2020-2025 GMC Sierra 2500HD
- Fits 6.6L Duramax only
- Replaces factory crank case line
- High-capacity oil reservoir
- Factory-style snap-on hose connections
- Tool-free reservoir check and drain
- Vehicle-specific engineered fitment
- Installs in about 30 minutes with basic tools
- Backed by K&N No-Hassle Lifetime Limited Warranty
Fitment
This part fits the following vehicles:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | GMC | Sierra 2500 HD | AT4 |
| 2024-2025 | GMC | Sierra 2500 HD | AT4X |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2025 | GMC | Sierra 2500 HD | Denali |
| 2022-2025 | GMC | Sierra 2500 HD | Pro |
| 2020-2025 | GMC | Sierra 2500 HD | SLE |
| 2020-2025 | GMC | Sierra 2500 HD | SLT |
Shipping & Returns
Shipping & Returns
Products that are in stock ship within 1-3 business days of being ordered. Please note some items are made to order, or could be out of stock. If you have any questions regarding stock please contact us through the live chat or email and we would be happy to help
Warranty Info
Warranty Info
All warranties are through the manufacturer, they will be facilitated by State Side Performance (some manufacturers require the end user contact the manufacturer directly to facilitate the warranty, in that case we will recommend you contact the manufacturer. Please contact us by Email if you have any questions or concerns regarding a warranty claim.
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Free Shipping for Non Oversize Items of $250
More info on shipping policyFree 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.
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Return Policy
More info on refund and return policyReturns must be UNOPENED, UNUSED, HAVE ALL ORIGINAL PACKAGING, BE IN NEW CONDITION, HAVE A VALID RMA, BE WITHIN A 30 DAY RETURN WINDOW FROM THE DATE OF PURCHASE.