Performance Air Filter 213mm x 254mm

Maximize Volumetric Efficiency for Your LS-Series Custom Intake

Who It’s For: This BMC Universal Filter is the go-to for builders running the GM LS Engine Family in custom swap configurations or high-boost forced induction setups. If you are fabricating a custom 4-inch or larger intake tract, this is the professional-grade filtration element you need.

The Problem: Most universal "cone" filters found at local parts stores use a multi-piece construction where the rubber base is glued to the filter media. Under the intense vacuum and heat generated by a high-displacement LS-Series engine, these joints often fail, sucking unfiltered air (or worse, part of the filter) into your intake. Furthermore, standard paper elements create a massive pressure drop that chokes your engine’s top-end power.

The Solution: We use BMC because they utilize a "Full Molding" process. This means the entire filter is produced in a single mold with no welded joints, ensuring it stays structurally sound under the high-velocity airflow required by the LS-Series engine. The 7-micron filtration ensures that while you’re moving massive air, you aren’t sandblasting your cylinder walls.

Why This is the Ultimate Upgrade

• Maximum Surface Area: The 254mm base and 213mm height provide a massive filtration window, reducing intake restriction and allowing the MAP sensor to see more consistent atmospheric pressure.
• Motorsport-Grade Construction: Features an epoxy-coated alloy mesh that resists fuel vapors and oxidation, paired with multi-layer cotton gauze for superior depth-loading filtration.
• No-Fail Design: The single-piece molded rubber base provides a vibration-resistant seal that won’t crack or separate during high-heat track sessions or aggressive street driving.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Applications:

• Custom Intake Manifold Fabrications
• Turbocharged and Supercharged Custom Builds
• LS-Series Engine Swaps (Restomod/Pro-Touring)
• Track-Specific Cold Air Intake Systems
• Off-Road High-Dust Performance Applications

Interchange Part Numbers:

BMC-213-254, 213mmx254mm, BMC-UNIVERSAL-CONICAL

The Performance Promise

Buy with confidence. Having spent years behind the tuning laptop and under the hood, I can tell you that BMC is one of the few brands that actually delivers on its flow Bench claims. This isn’t just a filter; it’s an insurance policy for your engine’s internals. Backed by real automotive experts and fast shipping.