AIRAID® 851-149 - SynthaMax Red Air Filter

51 reviews / Item # mpn2530177
AIRAID® - SynthaMax Red Air Filter
AIRAID® - SynthaMax Red Air FilterAIRAID® - Filtration Technology 602x420Airaid Authorized Dealer
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Product Details

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AiRAID Air Filters

SynthaMax Red Air Filter by AIRAID®. Advanced air filtration technology, superior construction and the world's best warranty make an AIRAID air filter the best you can buy. It allows increased airflow and provides better air filtration than the factory air filter, which results in improved performance and engine protection. And if you're ever dissatisfied for any reason, just send it back, no questions asked.

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  • Improves airflow and engine performance
  • Provides superior air filtration and engine protection
  • Over 99% efficiency rating
  • Can be washed and reused
  • Backed by AIRAID's "No Hassle" warranty
  • Proudly made in the USA

All aftermarket air filter companies make claims for better airflow, but how many of those increases come at the expense of inferior air filtration? AIRAID air filters allow increased airflow while trapping the smallest dirt particles, the size that ordinary cotton-gauze "performance" air filters can't capture. In fact, AIRAID filters have over a 99% efficiency rating. And AIRAID is so confident in the performance of their filters that each one is backed by their "No Hassle" warranty.

The SynthaMax is AIRAID's next generation high-tech air filter. It's 100% synthetic, non-oiled and washable. The inner filter media consists of two distinct layers of specifically designed synthetic materials that have separate performance characteristics. These layers are designed to work together to provide outstanding airflow and exceptionally high filtration. Contaminants are first captured by the outer layer of synthetic needlefelt polyester material, designed for wet and dry filtration with high airflow capacity. The inner layer of rayon/polyester captures any remaining contaminants while maintaining high airflow and low restriction. The inner filter media is supported by an inner and outer layer of wire mesh for strength and durability. The SynthaMax filter requires service every 15-30 thousand miles under normal conditions, at which time it should be washed with mild household detergent, rinsed and allowed to dry.

All AIRAID air filters feature a urethane frame, which is much more durable than the rubber used by most aftermarket filter manufacturers. And all panel style filters are made with 304 stainless steel mesh, for exceptional durability. The strength of the stainless steel won't allow the filter to bow in the center, allowing unfiltered air into the engine.

Finally, each AIRAID filter is backed by AIRAID's "No Hassle" warranty. There are no limitations or fine print here. Simply, if you're ever dissatisfied with the materials, workmanship, or performance of this air filter, just send it back... period! You don't have to worry about a proof of purchase or a warranty card. AIRAID filters are warranted for life.

AIRAID® was founded in 1997 when they began developing and manufacturing air intake systems for light trucks and SUVs, utilizing the cotton-gauze filter technology that was available at the time. These systems increased airflow and performance while being easy to install, and sold so well that the company soon realized that another source of filters was necessary. They believed they could produce a better quality filter using new technology and state-of-the-art materials, and so in 2002 the AIRAID Filter Company was formed. Today AIRAID is the recognized leader in air management technology. Extensive research and development has allowed AIRAID to come to market first with high quality products that improve drivability and performance.

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Warranty Information

Find out everything you need to know about the product warranty

Most AIRAID® products are backed by AIRAID "NO-HASSLE!" Warranty. Simply stated, if an applicable AIRAID® product fails for whatever reason, AIRAID® will replace it for a period of one year from the date of purchase. Further, most AIRAID filters are covered by Airaid "No Hassle!" Warranty for the life of the vehicle. Filters thet are intended for competition use (such as Race Day and Track Day product lines) and any product that are used in racing or competition are excluded.

Please Note:All Product and Filter(s) must have the AIRAID® name on it to be eligible for warranty. AIRAID® is not responsible for subsequent damage, labor cost, freight damage, loss of time or return shipping costs.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

This part is compatible with 62 vehicle(s)
Year Make Model Fitment Notes:
2006 BMW X5
  • 4.8L
2006 Volkswagen Passat
2005 Audi Allroad Quattro
2005 BMW X5
  • 4.4L / 4.8L
2005 Volkswagen Passat
  • 1.8L / 2.8L
2004 Audi A6 / A6 Quattro / Allroad Quattro
2004 Audi S4
2004 BMW 545i
2004 BMW X5
  • 4.4L / 4.8L
2004 Volkswagen Passat
2003 Audi A6 / A6 Quattro / Allroad Quattro
2003 Audi S6
2003 BMW 540i / M5
2003 BMW X5
  • 4.4L / 4.6L
2003 BMW Z8
2003 Volkswagen Passat
2002 Audi A6 / A6 Quattro / Allroad Quattro
2002 Audi S4
2002 Audi S6
2002 BMW 540i / M5
2002 BMW X5
  • 4.4L / 4.6L
2002 BMW Z8
2002 Volkswagen Passat
2001 Audi A4 / A4 Quattro
2001 Audi A6 / A6 Quattro / Allroad Quattro
2001 Audi S4
2001 BMW 540i / M5
2001 BMW 740i / 740iL
2001 BMW X5
  • 4.4L
2001 BMW Z8
2001 Volkswagen Passat
2000 Audi A4 / A4 Quattro
2000 Audi A6 / A6 Quattro
2000 Audi S4
2000 BMW 540i / M5
2000 BMW 740i / 740iL
2000 BMW X5
2000 BMW Z8
2000 Volkswagen Passat
1999 Audi A4 / A4 Quattro
1999 Audi A6 / A6 Quattro
1999 BMW 540i
1999 BMW 740i / 740iL
1999 Volkswagen Passat
1998 Audi A4 / A4 Quattro
1998 BMW 540i
1998 BMW 740i / 740iL
1998 Volkswagen Passat
1997 Audi A4 / A4 Quattro
1997 BMW 540i
1997 BMW 740i / 740iL
1997 BMW 840Ci
1996 Audi A4 / A4 Quattro
  • 2.8L
1996 BMW 740iL
1996 BMW 840Ci
1995 BMW 530i / 540i
1995 BMW 740i / 740iL
1995 BMW 840Ci
1994 BMW 530i / 540i
1994 BMW 740i / 740iL
1994 BMW 840Ci
1993 BMW 740i / 740iL

Product Reviews


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AIRAID® - SynthaMax Red Air Filter
AIRAID® 851-149 - SynthaMax Red Air Filter
Average Rating: 4.8 of 5
4.8 of 5
BMW 7 Air Filter
AIRAID® 851-149 - SynthaMax Red Air Filter
Nice and easy of installation.
SPosted by (Rochester, NY) /
2000 BMW 7-Series
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AIRAID® - SynthaMax Red Air FilterAIRAID® 851-149 - SynthaMax Red Air Filter    $50.90
51 reviews
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