• Performance Air Filter 213mm x 254mm
  • Performance Air Filter 213mm x 254mm
  • Performance Air Filter 213mm x 254mm
  • Performance Air Filter 213mm x 254mm Default Title

Performance Air Filter for GM LS-Series 213mm x 254mm

$73.00
$73.00
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  • Guaranteed Fitment
  • Performance Tested
  • Lifetime Warranty

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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

Fitment Universal / Custom Intake Systems
Engine Family GM LS-Series (LS1, LS3, LS7, LSX)
Factory Ratings Approx. 430 HP / 424 lb-ft (Base LS3)
Part Numbers BMC-213-254-UNI

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.

Fitment

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Engine Size

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Installation & Tools

The Wrench Time

  • Estimated Time: 20-30 Minutes
  • Difficulty: 2/10 - Straightforward drop-in upgrade with basic hand tools.

Tools You Will Need

  • 10mm wrench or socket (for negative battery disconnect)
  • 5/16" nut driver or flathead screwdriver (for intake tract hose clamps)
  • T15 or T20 Torx driver (if loosening MAF housing screws on modular housings)
  • Panel popper tool (for releasing factory airbox retaining tabs/harness clips)
  • Clean microfiber cloth (for wiping down the airbox seating surface)
Mechanic’s Pro Tip (The "Gotcha"):
Watch out for the brittle GM Mass Airflow (MAF) sensor harness connector. The gray CPA (Connector Position Assurance) lock slide gets heat-soaked and snaps easily. Gently slide the gray locking tab back with your fingernail or a tiny flathead before squeezing the release button. Never pull on the wires directly, and do not touch the exposed MAF sensor wire elements with your bare hands or tools.

Phase 1: Removing the Factory Part

  1. Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench to prevent check engine lights and clear short-term fuel trim tables.
  2. Disconnect the MAF Sensor: Locate the MAF sensor on the GM LS intake tube. Carefully slide the gray locking clip back and depress the release tab to unplug the harness. If your setup routes an external IAT (Intake Air Temperature) sensor, unclip that connector as well.
  3. Loosen Intake Clamps: Use a 5/16" nut driver or flathead screwdriver to loosen the hose clamp securing the intake bellows to the upper air cleaner housing cover.
  4. Unlatch and Remove Airbox Lid: Release the factory metal retention clips or back out the housing perimeter fasteners using a 5/16" socket. Pivot the airbox lid up and slide the hinge tabs out of the lower base assembly.
  5. Extract the OEM Filter: Lift the factory panel filter out of the lower tray. Inspect the lower airbox basin for road debris, leaves, or grit, and vacuum or wipe it clean using a clean microfiber cloth before installing the new high-flow unit.

Phase 2: Installing the Performance Air Filter for GM LS-Series 213mm x 254mm

  1. Inspect and Orient the Filter: Ensure the sealing perimeter gasket on your new 213mm x 254mm Performance Air Filter is fully seated and free of kinks. Orient the filter mesh in the correct flow direction toward the throttle body.
  2. Seat the Filter in Lower Box: Drop the filter squarely into the lower GM LS factory airbox tray. Press firmly around all four edges by hand to ensure the urethane lip seats flat inside the retention channel with zero air gaps.
  3. Re-engage Upper Lid: Align the bottom locating tabs of the airbox lid into the lower housing slots. Swing the cover down over the filter. Fasten the factory latches or snug down the perimeter bolts with a 5/16" socket, ensuring the filter flange does not pinch or roll.
  4. Reattach Intake Bellows & Harnesses: Slip the intake tube back over the airbox outlet neck and tighten the worm-drive clamp firmly with a 5/16" nut driver until snug (do not overtighten and crush the plastic neck). Reconnect the MAF electrical harness and push the gray safety lock forward until it clicks.
  5. Reconnect Battery and Relearn: Reattach the negative battery terminal using a 10mm wrench. Start the engine and do not touch the gas pedal for at least 20 seconds to allow the GM LS PCM/ECM to calibrate its idle air control and baseline MAF frequency readings smoothly.

Disclaimer: This is a general guide provided for the GM LS-Series platform. Always refer to your factory service manual for exact torque specifications and safety procedures.

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]
Performance Air Filter for GM LS-Series 213mm x 254mm

$73.00