Chevrolet Sierra 3500 HD Performance Air Intake - aFe - ProGuard - `20-`25
Chevrolet Sierra 3500 HD Performance Air Intake - aFe - ProGuard - `20-`25

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Chevrolet Sierra 3500 HD Performance Air Intake - aFe - ProGuard - 20-25 is an aFe ProGuard OE replacement air filter engineered for 2020–2025 Sierra 3500 HD V8 6.6L (L5P) diesel trucks. It provides OEM-fit filtration with enhanced dust protection for demanding driving conditions.
This replacement filter uses deeply pleated, high-quality media to increase filtration capacity while maintaining airflow comparable to factory units. An included foam pre-filter captures larger particles before they reach the main element, reducing clogging and extending service life—especially useful for off-road, construction, or dusty environments. It is a direct replacement for GM part number 85614334 and follows manufacturer guidance for service intervals, generally recommended every 12,000–15,000 miles depending on conditions.
Features
- Deeply pleated, durable filter media for improved contaminant capture
- Foam pre-filter layer traps larger debris and prolongs filter life
- Maintains OEM airflow characteristics while enhancing protection
- Direct fit for 2020–2025 Chevrolet/GMC 3500 HD diesel (replaces GM 85614334)
- Recommended service interval: approximately 12,000–15,000 miles (condition dependent)
If you have questions about fitment, service intervals, or whether this filter suits your build, call us directly—we're happy to help. We offer installation and customization services at both locations: Austin, Texas and the Los Angeles, California area. For Austin call 512-982-9393 (TX), for Los Angeles call 562-981-6800 (CA).
If you plan to purchase multiple items, contact us for shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov




