# K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can

The K&N Air Oil Separator protects the engine and intake tract from blowby by capturing the oil in our industry leading high capacity reservoir. This helps prevent power loss and possible engine damage caused by blowby. The K&N Air Oil Separator is quick and easy to install in about 30 minutes with basic tools and uses factory-style hose connections to quickly snap on and off. The oil separator replaces the factory line from the crank case allowing the oil separator to be mounted to a coinvent location in your engine bay. No tools are needed to check and empty the oil collector reservoir. Each unit is engineered specifically for your vehicle and is backed by our No-Hassle Lifetime Limited Warranty.

-   No-Hassle Lifetime Limited Warranty

This Part Fits:

Year

Make

Model

Submodel

2020-2025

Chevrolet

Silverado 2500 HD

Custom

2020-2025

Chevrolet

Silverado 2500 HD

High Country

2020-2025

Chevrolet

Silverado 2500 HD

LT

2020-2025

Chevrolet

Silverado 2500 HD

LTZ

2020-2025

Chevrolet

Silverado 2500 HD

WT

2024-2025

Chevrolet

Silverado 2500 HD

ZR2

2020-2025

Chevrolet

Silverado 3500 HD

High Country

2020-2025

Chevrolet

Silverado 3500 HD

LT

2020-2025

Chevrolet

Silverado 3500 HD

LTZ

2020-2025

Chevrolet

Silverado 3500 HD

WT

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

2020-2025

GMC

Sierra 3500 HD

AT4

2020-2021

GMC

Sierra 3500 HD

Base

2020-2025

GMC

Sierra 3500 HD

Denali

2022-2025

GMC

Sierra 3500 HD

Pro

2020-2025

GMC

Sierra 3500 HD

SLE

2020-2025

GMC

Sierra 3500 HD

SLT

## Details

- **Price:** 242.35 CAD
- **Vendor:** K&N Engineering
- **Type:** Oil Separators

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 242.35 CAD | In stock |

## Images

- Photo - Primary
- Photo - Mounted
- Photo - Mounted
- Photo - Mounted
- Photo - lifestyle view
- Photo - lifestyle view
- Photo - out of package
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/k-n-20-23-gm-2500-3500-6-6l-oil-separator-catch-can)
> Updated: 2026-06-27