K&N 50-3103 NextGen Cold Air Intake System for 2020-2025 Chevrolet Silverado/GMC

Vehicle Fitment

• 2020-2025 Chevrolet Silverado 2500 HD 6.6L V8
• 2020-2025 Chevrolet Silverado 3500 HD 6.6L V8
• 2020-2025 GMC Sierra 2500 HD 6.6L V8
• 2020-2025 GMC Sierra 3500 HD 6.6L V8

Features

• High-density polyethylene (HDPE) rotationally molded intake tube to significantly increase airflow
• Oversized conical reusable air filter with oiled cotton gauze media - lifetime service interval potential
• Custom NextGen semi-enclosed air-box helps reduce intake air temperature and engine-bay heat soak
• Large diameter CAD-designed intake tube with flow-optimised airchannels for improved air velocity and volume
• Replaces restrictive factory intake for enhanced throttle response and performance - no tuning required for quoted gains
• Dialled for heavy-duty truck engine bay fitment; designed for direct installation using stock mounting locations
• Washable and reusable filter element offers reduced long-term maintenance cost and waste compared to disposable filters
• Backed by K&N's No-Hassle Lifetime Limited Warranty

Specifications

• Estimated Horsepower Gain: ~+20.56 HP @ ~4633 RPM
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• Estimated Torque Gain: ~+28.10 lb-ft @ ~2420 RPM
• Airflow Improvement: Up to ~83.2% increase over stock intake
• Intake Tube Material: High-Density Cross-Linked Polyethylene (HDPE), black finish
• Service Interval: Up to 100,000 miles under normal highway driving conditions
• CARB Status: Not legal for sale or use in California on pollution-controlled vehicles

Included Components

• 1x High-Flow Lifetime Air Filter (oiled cotton gauze)
• 1x HDPE Intake Tube Assembly
• 1x NextGen Semi-Enclosed Air-Box Housing
• Silicone couplers and stainless-steel clamps (quantity varies per kit)
• Installation hardware kit with brackets, fasteners and detailed instructions

Product Description

The K&N 50-3103 NextGen Cold Air Intake System is engineered to replace the factory intake pathway on the 6.6L V8 heavy-duty trucks listed above. This kit features a large-diameter, precision-molded HDPE intake tube and an oversized, premium cotton gauze filter housed inside a semi-enclosed NextGen air box. The result is a measurable improvement in engine breathing, leading to enhanced horsepower and torque, while retaining everyday usability.

Designed specifically for heavy-duty 2500/3500 class GM trucks with the 6.6 L gasoline V8, the system balances durability, performance and practicality. The reusable filter lowers long-term costs and waste, and the engineered air-box shielding helps minimise intake of heated engine-bay air. Installation is straightforward using factory mounting points, and users should notice improved throttle response and a more robust engine sound without disruption to normal driving conditions.

For drivers who demand performance upgrades for their heavy-duty Chevy/GMC 6.6L V8 truck but still want daily drivability and long-term value, this intake system offers a solid fit and finish, measurable gains, and proven reliability backed by warranty support.