AIRAID® 851-031 - SynthaMax Red Air Filter

51 reviews / Item # mpn2530321
AIRAID® - SynthaMax Red Air Filter
AIRAID® - SynthaMax Red Air FilterAIRAID® - Filtration Technology 602x420Airaid Authorized Dealer
In Stock (10) - Ships Tomorrow 05.30.16
Vehicle Specific
Fits Following Model(s):
  • Please Select Vehicle Below
Select Vehicle
Add To Cart
Interested in this item?
Have a Question? 800.505.3274
Ask a Specialist: Live Chat
Authorized Dealer:Airaid
Low Prices. Price match guarantee
Guaranteed Fitment. Always the correct part
In-House Experts. We know our products
Easy Returns. Quick & Hassle Free
Select VehicleSelected Vehicle
Do not see your vehicle here?   View similar products

Product Details

Learn everything you want to know about this product
to make an informed purchase.

AiRAID Air Filters

SynthaMax Red Air Filter (851-031) 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.

Airaid - CleaningAiraid - VideoAiraid - About


  • 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.

Part Number:

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 216 vehicle(s)
Year Make Model Fitment Notes:
2008 Nissan Altima
  • 3.5L
2007 Infiniti FX35
2007 Infiniti G35
2007 Nissan Altima
  • 3.5L
2007 Nissan Murano
2007 Nissan Quest
2007 Subaru Forester
2007 Subaru Impreza
2007 Subaru WRX / WRX STI
  • 2.5L
2006 Infiniti FX35
2006 Infiniti G35
2006 Nissan 350Z
2006 Nissan Altima
  • 3.5L
2006 Nissan Murano
2006 Nissan Quest
2006 Nissan Sentra
2006 Peterbilt 385
  • 10.8L
2006 Subaru Baja
  • Turbo
2006 Subaru Forester
  • Turbocharged
2006 Subaru WRX / WRX STI
  • 2.5L
2005 Infiniti FX35
2005 Infiniti G35
2005 Nissan 350Z
2005 Nissan Altima
  • 3.5L
2005 Nissan Maxima
2005 Nissan Murano
2005 Nissan Quest
2005 Nissan Sentra
2005 Saab 9-2
2005 Subaru Baja
  • Turbo
2005 Subaru Forester
  • Turbocharged
2005 Subaru WRX
  • 2.0L
2005 Subaru WRX STI
2004 Infiniti FX35
2004 Infiniti G35
2004 Infiniti I35
2004 Nissan 350Z
2004 Nissan Altima
  • 3.5L
2004 Nissan Frontier
  • 3.3L
2004 Nissan Maxima
2004 Nissan Murano
2004 Nissan Pathfinder
  • 3.5L
2004 Nissan Quest
2004 Nissan Sentra
2004 Nissan Xterra
  • 3.3L
2004 Subaru Baja
  • Turbo
2004 Subaru Forester
  • Turbocharged
2004 Subaru Outback
  • 3.0L
2004 Subaru WRX / WRX STI
2003 Infiniti FX35
2003 Infiniti G35
2003 Infiniti I35
2003 Infiniti QX4
2003 Nissan 350Z
2003 Nissan Altima
  • 3.5L
2003 Nissan Frontier
  • 3.3L
2003 Nissan Maxima
2003 Nissan Murano
2003 Nissan Pathfinder
2003 Nissan Sentra
2003 Nissan Xterra
  • 3.3L
2003 Subaru Outback
  • 3.0L
2003 Subaru WRX
2002 Infiniti G20
2002 Infiniti I35
2002 Infiniti QX4
2002 Nissan Altima
  • 3.5L
2002 Nissan Frontier
  • 3.3L
2002 Nissan Maxima
2002 Nissan Pathfinder
2002 Nissan Sentra
2002 Nissan Xterra
  • 3.3L
2002 Subaru Outback
  • 3.0L
2002 Subaru WRX / WRX STI
2001 Infiniti G20
2001 Infiniti I30
2001 Infiniti QX4
2001 Nissan Altima
2001 Nissan Frontier
  • 3.3L
2001 Nissan Maxima
2001 Nissan Pathfinder
2001 Nissan Sentra
2001 Nissan Xterra
  • 3.3L
2001 Subaru Outback
  • 3.0L
2000 Infiniti G20
2000 Infiniti I30
2000 Infiniti QX4
2000 Nissan Altima
2000 Nissan Frontier
  • 3.3L
2000 Nissan Maxima
2000 Nissan Pathfinder
2000 Nissan Sentra
2000 Nissan Xterra
  • 3.3L
1999 Infiniti G20
1999 Infiniti I30
1999 Infiniti QX4
1999 Nissan Altima
1999 Nissan Frontier
  • 3.3L
1999 Nissan Maxima
1999 Nissan Pathfinder
1999 Nissan Sentra
1999 Subaru Forester
1999 Subaru Impreza
1999 Subaru Legacy
1998 Infiniti I30
1998 Infiniti QX4
1998 Nissan 200SX
1998 Nissan 240SX
1998 Nissan Altima
1998 Nissan Maxima
1998 Nissan Pathfinder
1998 Nissan Sentra
1998 Subaru Forester
1998 Subaru Impreza
1998 Subaru Legacy
  • 2.2L
1997 Infiniti I30
1997 Infiniti J30
1997 Infiniti QX4
1997 Nissan 200SX
1997 Nissan 240SX
1997 Nissan Altima
1997 Nissan Maxima
1997 Nissan Pathfinder
1997 Nissan Sentra
1997 Subaru Impreza
1997 Subaru Legacy
1997 Subaru SVX
1996 Infiniti G20
1996 Infiniti I30
1996 Infiniti J30
1996 Nissan 200SX
1996 Nissan 240SX
1996 Nissan Altima
1996 Nissan Maxima
1996 Nissan Pathfinder
1996 Nissan Sentra
1996 Subaru Impreza
1996 Subaru Legacy
1996 Subaru SVX
1995 Infiniti G20
1995 Infiniti J30
1995 Nissan 200SX
1995 Nissan 240SX
1995 Nissan Altima
1995 Nissan Maxima
1995 Nissan Pathfinder
1995 Nissan Pick Up
  • 3.0L
1995 Nissan Sentra
1995 Subaru Impreza
1995 Subaru Legacy
1995 Subaru SVX
1994 Infiniti G20
1994 Infiniti J30
1994 Nissan 240SX
1994 Nissan Altima
1994 Nissan Maxima
1994 Nissan Pathfinder
1994 Nissan D21
  • 3.0L
1994 Nissan Sentra
1994 Subaru Impreza
1994 Subaru Legacy
1994 Subaru SVX
1993 Infiniti G20
1993 Infiniti J30
1993 Nissan 240SX
1993 Nissan Altima
1993 Nissan Maxima
1993 Nissan NX
1993 Nissan Pathfinder
1993 Nissan Pick Up
  • 3.0L
1993 Nissan Sentra
1993 Subaru Impreza
1993 Subaru Legacy
1993 Subaru SVX
1992 Infiniti G20
1992 Infiniti M30
1992 Nissan 240SX
1992 Nissan Maxima
1992 Nissan NX
1992 Nissan Pathfinder
1992 Nissan Pick Up
  • 3.0L
1992 Nissan Sentra
1992 Nissan Stanza
1992 Subaru Legacy
  • Turbocharged
1992 Subaru SVX
1991 Infiniti G20
1991 Infiniti M30
1991 Nissan 240SX
1991 Nissan Maxima
1991 Nissan NX
1991 Nissan Pathfinder
1991 Nissan Pick Up
  • 2.4L
1991 Nissan Sentra
1991 Nissan Stanza
1991 Subaru Legacy
1990 Infiniti M30
1990 Nissan 240SX
1990 Nissan Axxess
1990 Nissan Maxima
1990 Nissan Pathfinder
1990 Nissan Stanza
1990 Subaru Legacy
1989 Nissan 240SX
1989 Nissan 300ZX
1989 Nissan Maxima
1989 Nissan Pulsar
  • 1.8L
1988 Nissan 300ZX
1988 Nissan Pulsar
  • 1.8L
1987 Isuzu Pick Up
  • 2.2L
1987 Nissan Pulsar
1986 Isuzu Pick Up
  • 2.2L
1984 Nissan Maxima
1983 Nissan Maxima
1982 Nissan Maxima
1981 Nissan Maxima
1981 Nissan 810
1980 Nissan 810

Product Reviews


Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

AIRAID® - SynthaMax Red Air Filter
AIRAID® 851-031 - SynthaMax Red Air Filter
Average Rating: 5 of 5
5 of 5
Air Filter
AIRAID® 851-031 - SynthaMax Red Air Filter
This is a well made filter, better than OEM in my opinion. It does just what the mfg. says it would. Thanks for a great product and service.
DPosted by (Hays, KS) /
1993 Subaru Impreza
Was this review helpful for you? Yes2  people found this review helpful.
AIRAID® - SynthaMax Red Air FilterAIRAID® 851-031 - SynthaMax Red Air Filter    $62.11
51 reviews
Add To Cart

All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only.
It is neither inferred nor implied that any item sold by, is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.