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30% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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Receive Up To 30% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ30 at checkout to receive 30% off the following categories: Select Brake Parts, Select Hi-Performance and Truck Accessories, Batteries, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Spark Plugs, Plug Wires, CV Axles, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Car Covers, Seat Covers, Wheel Covers, Body Repair, Collectibles and Apparel.

Use promotional code MMJ20 at checkout to receive 20% off the following categories: Ignition, Chassis, Shocks & Struts, Outdoor Lifestyle, Towing, Air Filters, Oil Filters, Bearings & Seals and Engine Parts.

Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes the following brands: Champion, Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner, Philips and BBK Performance. Valid online until 11:59 PM EST on 10/1/17.

Receive 25% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER25.

Receive 10% Off Select Champion, MOOG and FelPro branded products with your online purchase. Use promotional codes: CHAMP10, MOOG10 and/or FELPRO10.

Free Shipping on Orders Over $40 or in-store pickup

Air Filters



Air Filters

Air Filters are a critical part of delivering maximum performance to your engine and ensuring protection by keeping harmful contaminants out of your intake manifold and valve train. A clean air filter can improve your acceleration up to 11%.

What is an air filter and what does it do

What is it?

  • Air filters are an important part of your vehicles maintenance cycle. They range in sizes and shapes and are designed to fit your vehicle application.
  • Air filters are most commonly a panel shape. The primary component of an air filter is the material or media that is surrounded by gasket material.
  • Some filters are supported with wire mesh across the face of the material or media.

How Does it Work?

  • Your vehicle’s intake manifold pulls air into the engine from a vehicle’s air box and the air filter sits at the top of that box. As air is drawn in, it is pulled across the pleats of media that make up the air filter.
  • That media protects the vehicle and its components by capturing harmful particles before they enter the engine.
  • When clogged, the filter will prevent or restrict proper air flow into the combustion chambers.

How is it Made?

  • Gaskets surrounding the filtering media provide a seal within the air intake chamber.
  • Filtering material is specially designed to remove dirt from the air entering the engine.
  • An external screen on round, radial and some panel air filters provides strength while allowing the free flow of air to the engine.

Why Does it Fail?

  • Severe driving.
  • Lack of proper maintenance/replacement.
  • Clogs.

What are the Symptoms of Failure?

  • Poor acceleration.
  • Reduced fuel economy of some applications.
  • Rough idle and or starting.
  • Check engine light engaging.

What are the Implications of Failure?

  • Internal component damage.
  • Clogged filters can become so restricted that the filter collapses and media is drawn into the engine causing catastrophic failure.

How Difficult is the Install?

Difficulty Rating:


  • Installation difficulty depends on vehicle

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