K&N Performance Diesel High-Flow Engine Air Filter — 2020–2026 Silverado & Sierra 2500/3500, Washable Lifetime

The K&N Performance Diesel High-Flow Lifetime Engine Air Filter (33-5098) is a washable, reusable replacement that increases airflow for improved engine response in 2020–2026 Chevy Silverado and GMC Sierra 2500/3500 trucks.

This K&N filter is built to be a direct-fit upgrade for select Chevrolet and GMC heavy-duty pickups, engineered to boost airflow without modifying the factory air box. Constructed from multiple layers of treated cotton gauze and rugged materials, it’s meant to be cleaned and reused instead of frequently discarded. The product is backed by K&N’s limited lifetime warranty and is made in the USA; installation is straightforward and typically takes only a few minutes.

How does this air filter improve my truck’s performance?

The high-flow media is designed to allow more air into the engine compared with standard paper filters, which can help with throttle response and efficient breathing under load. K&N’s multi-layer cotton gauze and oil treatment balance airflow and particle capture for everyday driving and towing conditions.

• Increased airflow up to advertised performance gains vs. stock paper filters
• Multi-layer cotton gauze media for a balance of flow and filtration
• Pre-oiled and ready to install—no extra treatments required

How often will I need to clean or service this filter?

Under normal highway driving, K&N recommends cleaning roughly every 75,000 miles, though heavier dust or off-road use can shorten that interval. Cleaning is simple with a K&N service kit; the filter is designed for repeated wash-and-replenish cycles rather than one-time disposal.

• Typical cleaning interval: about 75,000 miles in average highway driving
• Shorter intervals recommended for dusty or off-road work environments
• Compatible with K&N cleaning and oiling kits for maintenance

Will this fit my 2020–2026 Silverado or Sierra without modifications?

This part (33-5098) is engineered as a direct replacement for the factory engine air filter in designated 2020–2026 Silverado 2500/3500 and Sierra 2500/3500 models. It installs into the OEM air box with no cutting or adapters required, retaining factory fitment and serviceability.

• Direct-fit for specified 2020–2026 Chevrolet and GMC heavy-duty models
• No modification to the factory air box needed for installation
• Quick installation—typically a few minutes with basic hand tools

What are the build quality and warranty details?

K&N filters use durable materials and proven construction methods intended for long service life; the media layers are treated to help trap contaminants while permitting airflow. K&N supports its stock-replacement filters with a limited lifetime warranty, subject to stated limitations and proper maintenance.

• Durable, multi-layer cotton gauze media with a tackifying treatment
• Made in the USA with quality control testing on vehicle platforms
• Limited lifetime warranty for stock-replacement applications (terms apply)

Who is this filter for? Pickup owners who want a long-lasting, serviceable air filter that fits factory air boxes on 2020–2026 Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 heavy-duty trucks. It’s aimed at drivers who tow, haul, or simply want improved airflow and reduced ongoing replacement waste compared with disposable paper filters. If you operate in extremely dusty conditions, plan for more frequent cleaning and use K&N’s maintenance kit for best results.