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The aFe ProGuard OE replacement air filter for 2020–2025 GM Sierra 3500 HD diesel trucks with the 6.6L L5P engine features deeply pleated media plus a foam pre‑filter to capture larger contaminants and prevent premature clogging. Recommended replacement intervals are approximately 12,000–15,000 miles. This OE‑style filter replaces GM part number 85614334 and is intended to protect engine components during demanding driving or dusty conditions.
aFe 20-25 GM Sierra 3500 HD Power ProGuard OE Replacement Air Filter
