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K&N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K&N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.
Safeguard your engine's performance and longevity with the K&N 81-0812 Air Oil Separator Catch Can, specifically designed for 2020-2025 Chevrolet Silverado 2500/3500 HD and GMC Sierra 2500/3500 HD models equipped with the 6.6L engine. This essential component captures oil and moisture from the blow-by gasses in your engine's crankcase, preventing them from entering the intake system and causing potential damage or performance degradation.
The K&N Air Oil Separator is a crucial upgrade for any truck owner looking to protect their investment. By installing this catch can, you actively combat the harmful effects of blow-by, ensuring your 6.6L Duramax engine runs cleaner and stronger for years to come. Invest in superior engine protection with GGCRACING.
| Brand | K&N Engineering |
|---|---|
| Manufacturer part number | 81-0812 |
| GGC SKU | KNN81-0812 |
| UPC / GTIN | 024844401366 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 13.2 × 7 × 3.7 in |
|---|---|
| Shipping weight | 2 lb |
| Year | Make | Model | Trim |
|---|---|---|---|
| 2020-2025 | Chevrolet | Silverado 2500 HD | Custom, High Country, LT, LTZ, WT |
| 2024-2025 | Chevrolet | Silverado 2500 HD | ZR2 |
| 2020-2025 | Chevrolet | Silverado 3500 HD | High Country, LT, LTZ, WT |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2025 | GMC | Sierra 2500 HD | AT4, Denali, SLE, SLT |
| 2022-2025 | GMC | Sierra 2500 HD | Pro |
| 2024-2025 | GMC | Sierra 2500 HD | AT4X |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2025 | GMC | Sierra 3500 HD | AT4, Denali, SLE, SLT |
| 2022-2025 | GMC | Sierra 3500 HD | Pro |
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