FITMENT
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2017-2019 Chevrolet Silverado & GMC Sierra 2500 HD 3500 HD
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2020-2022 Chevrolet Silverado 4500 HD 5500 HD 6500 HD
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Note: Direct replacement engineered specifically for the 6.6L L5P Duramax Diesel engine platform. Will not fit gasoline models.
OEM Cross-Reference
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A3231C, A3257C, LAF3231, A41474, WA10695
DESCRIPTION
Product Overview
- Ensure maximum airflow and superior engine protection with this high-performance replacement engine air filter. Precision-engineered with a micro-aperture microfiber filtration matrix, it balances maximum breathability with elite particle retention, trapping fine dust, soot, and road grit before they can reach sensitive turbochargers and cylinder components.
- Designed for a seamless OEM drop-in fit, this filter features deep, structural pleats that resist collapsing under high-vacuum intake spikes during heavy towing and aggressive acceleration. The continuous, heavy-duty perimeter sealing gasket creates a tight seal inside the factory airbox, eliminating unmetered air bypass and delivering long-lasting performance for heavy-duty applications.
Key Features
- Dual-stage filtration design combines a dense pre-filter layer with fine microfiber media to catch both coarse debris and sub-micron particles.
- Integrated top metal mesh reinforcement prevents pleat deformation and structural collapse during intense turbocharger intake suction.
- High-density pleated media maximizes dirt-holding capacity, extending interval life between service replacements.
- Continuous molded polyurethane seal creates a leak-free fit within the factory airbox to eliminate unfiltered bypass air.
- Direct drop-in engine air filter replacement engineered strictly to original equipment specifications for a fast, tool-free installation.
Replacement Interval
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Inspect the engine air filter every 15,000 miles and replace by 30,000 miles under normal highway driving conditions. Vehicles operating in heavy construction, agricultural environments, or frequent gravel-road driving should reduce the replacement interval to 15,000 to 20,000 miles.
FAQ
Q: Is this engine air filter compatible with the older A3141C filter from earlier model years?
A: No. Although they may look similar visually, airbox dimensions changed between vehicle generations. The A3231C/A3257C air filter is specifically sized for the 2017–2019 platform and will not fit 2011–2016 airbox housings.
Q: Can I upgrade to the 2020+ A3248C filter for better filtration?
A: No. The A3248C filter has different physical dimensions and will not properly seat or seal inside a 2017–2019 airbox. Always select the filter designed specifically for your vehicle's factory air intake housing.
Q: I use my truck for heavy fifth-wheel towing — how often should I change this engine air filter?
A: Under sustained heavy towing, the engine ingests significantly more air volume and dust loading. Inspect at 10,000 miles and expect replacement by 15,000–20,000 miles depending on operating conditions.
Q: Will installing a washable oiled performance filter give me more horsepower?
A: Power gains from aftermarket washable filters on stock-tuned diesel engines are negligible, as the factory intake system already flows sufficient air. Furthermore, washable oiled filters carry a risk of oil migration, which can contaminate the Mass Air Flow (MAF) sensor and cause drivability issues. This dry filter provides optimum airflow without sensor contamination risks.
Q: Combining this with cabin and fuel filters for a full L5P service?
A: The 2017-2019 Air, Cabin & Fuel Kit bundles everything except the oil filter. For the complete 4-filter overhaul, grab Full Maintenance Kit.
