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The K&N 63-3118 Performance Air Intake System delivers more airflow to the 3.0L Duramax diesel engine in 2020-2021 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. This enclosed cold air intake protects the filter from engine heat while the roto-molded HDPE tube and oversized oiled cotton filter increase horsepower and torque. Installation takes less than 60 minutes with basic hand tools and includes a washable filter lasting up to 100000 miles between services.
Key Features
- Roto-Molded HDPE Intake Tube: Expands airflow volume to the engine paired with oversized conical high-flow oiled cotton filter.
- High-Flow Washable Filter: Reusable design cleans every 100000 miles under normal highway driving requires no replacement elements.
- Enclosed Air Box: Shields filter and inlet air from engine bay heat for cooler denser intake charge and consistent power gains.
- Product weight 11.2 lbs ships in box 24 x 17.6 x 10.6 inches.
- High-density polyethylene construction and oiled cotton media for durable filtration and flow.
- Filter service interval up to 100000 miles under normal highway conditions use K&N cleaning kit for maintenance.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2020-2021 | Chevrolet | Silverado 1500 | High Country, LT, LTZ |
| 2020-2021 | GMC | Sierra 1500 | Denali, SLE, SLT |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | 63-3118 |
| Product Type | Cold Air Intakes |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new K&N cold air intakes identified by manufacturer part number 63-3118. Hardware, adapters, clamps, hoses, filters, and service supplies are included only when stated for this exact product.
About K&N Engineering
K&N develops reusable air filtration, intake, oil filtration, fuel filtration, and related performance products for vehicle-specific and dimensional applications.
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Frequently Asked Questions
How do I confirm K&N 63-3118 fits my vehicle?
Match the year, make, and model in the fitment table, then confirm the engine, factory housing, sensor layout, emissions notes, and any application restrictions stated for this exact part.
Does K&N 63-3118 require tuning or emissions verification?
Requirements vary by vehicle and intake configuration. Check the current K&N application and emissions notes, and complete any required calibration before full-load operation.
What should be checked after installing K&N 63-3118?
Verify seals, clamps, fasteners, hoses, sensors, wiring, and surrounding clearance as applicable. Check for leaks or contact, then follow the manufacturer service and reinspection schedule.
Installation Instructions
- Completes in 60 minutes or less using simple hand tools no cutting or permanent modifications needed
- Replaces stock airbox and intake tube uses factory mounting points and hardware
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