2012 Audi A4 Performance Air Intake Systems

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    • (0 reviews)
      # 73905319
      Audi A4 2.0L 2012, 69 Series Typhoon Cold Air Intake System by K&N®. Replacement Filter # RF-1047. Air Filter Height: 6" (152 mm). Air Filter Large End Diameter: 6" (152 mm). Air Filter Material: Cotton Gauze. Clamp Style: Regular....
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $284.99
    • (1 reviews)
      # 360222
      Audi A4 2.0L 2012, SP Series Cold Air Intake System by Injen®. HP Gain: +12 hp. Torque Gain: +18 lbs. x ft.. Includes: X-1017 Filter. The SP Series Cold Air Intake System is made for the enthusiast who wants maximum horsepower from...
      Delivers more oxygen to the combustion chamber by drawing in cooler airUses the patented MR Technology tuning process to ensure the air/fuel ratio is within optimum limits
      $303.24
    • (0 reviews)
      # 102497202
      Audi A4 2.0L 2012, Cold Air Intake System with Donaldson PowerCore® Filter by Volant®. Cooler air is denser and packs in more oxygen for better combustion and more horsepower. This air intake system features an airbox that...
      Protective and insulating AirboxQuicker throttle response
      $259.03
    • (0 reviews)
      # 34619161
      Audi A4 2012, 33 Series Panel Air Filter by K&N®. Filter Material: Cotton Gauze. Filter Re-Oiling Amount: 1.15 oz (34 ml). Height: 1.563" (40 mm). Outside Length: 12.625" (321 mm). Outside Width: 5" (127 mm). Includes: 1 Air...
      Improves engine airflowIncreases horsepower and acceleration
      $52.99
    • (0 reviews)
      # 103804531
      Audi A4 2012, Magnum Flow Panel Air Filter by aFe®. Filter Series: Pro 5R. This Pro 5R air filter provides performance filtration and maximum convenience. Constructed with 100% polyurethane on all sides, this high flow cotton...
      Deep Cotton Pleats for Increased FlowFits In Factory Housing
      $67.95
    • (0 reviews)
      # 103804534
      Audi A4 2012, Magnum Flow Panel Air Filter by aFe®. Filter Series: Pro Dry S. Constructed with 100% polyurethane on all four sides, this high flow "oil-free" OE replacement performance filter will outflow stock paper filter for...
      For Improved Horsepower And TorqueLimited Lifetime Warranty
      $67.95
    • (0 reviews)
      # 107661212
      Audi A4 / A4 Quattro 2.0L 2012, Cabin Air Filter by K&N®. Filter Material: Non-woven Synthetic. Height: 1.375" (35 mm). Length: 10.938" (278 mm). Material Used: Polyurethane. Width: 9.5" (241 mm). Includes: 1 Cabin Filter. K&N...
      Easy to Clean and ReuseFreshens and cleans incoming cabin air
      $49.99
    • (0 reviews)
      # 98119260
      Audi A4 / A4 Quattro 2.0L 2012, Black Throttle Body Spacer by Torque Solution®. Torque Solution Throttle Body Spacers are designed to increase Horsepower & Torque. By creating more intake manifold volume along with a better air...
      $75.93
    • (0 reviews)
      # 35817739
      Audi A4 / A4 Quattro 2012, Air Filter by Beck Arnley®. Primary. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import...
      It is recommended to use factory hardware for installationOE quality products from top original equipment
      $19.10
    • (0 reviews)
      # 85801264
      Audi A4 / A4 Quattro 2.0L 2012, Air Filter, FTF Air Filter by Denso®. The air filter is the last line of defense against the harmful airborne abrasives that have been proven to wear out engines before their time. With OE-quality...
      High airflow rate improves performance and fuel economySuperior dust holding capacity increases filter life
      $22.85
    • (0 reviews)
      # 18677708
      Audi A4 / A4 Quattro 2.0L 2012, Extra Guard™ Flexible Panel Air Filter by FRAM®. Size: 12.64" (L) x 5" (W) x 2.35" (H). Most dirt and dust enters the engine through the air filter and FRAM Extra Guard is engineered to provide...
      Provides better air filtration for improved performancePrevents damaging particles from entering your engine
      $26.17
    • (0 reviews)
      # 21455775
      Audi A4 Quattro 2.0L 2012, Air Filter by Hastings®. Clean air is critical to the performance of your engine, so don’t trust just any filter. Hastings filters are tested according to SAE J726 test procedures, where they meet or...
      Filters out dirt and dust in the air preventing them from entering the engineHeavy duty construction for long service life
      $21.64
    • (0 reviews)
      # 20556851
      Audi A4 / A4 Quattro 2.0L 2012, Air Filter by MANN-Filter®. Get excellent engine protection and more economical operation just by replacing your air filter. This MANN air filter is specially designed for your vehicle to ensure a...
      Optimum protection for the engine, airflow meters and other sensorsPerfectly adapted in form and function to your vehicle
      $15.37
    • (0 reviews)
      # 87595372
      Audi A4 2012, Air Filter Panel by WIX®. Height: 2.628". Inner Diameter Top: Closed. Length: 12.690". MediaType: Cellulose. Style: Air Filter Panel. Considering as much as 10,000 gallons of air must pass through the air filter for...
      Prevents foreign particles like carbon, soot and abrasives from entering the fuel mixEnsures superior engine protection
      $23.51
    • (0 reviews)
      # 35538119
      Audi A4 / A4 Quattro 2.0L 2012, Remanufactured Mass Air Flow Sensor by A1 Cardone®. Mass Air Flow Sensor. Import. Without Housing. With Instruction Sheet. Mounting Holes: 2. Mounting Type: Bolt-On. MAF Sensors precisely track O.E....
      50-state emissions street legalThe finest quality at a great price
      $178.24
    • (0 reviews)
      # 97593033
      Audi A4 / A4 Quattro 2012, Air Mass Meter by Pierburg®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $217.50
    • (0 reviews)
      # 106733114
      Audi A4 / A4 Quattro 2012, Throttle Body by VDO®. Includes: Electronic Throttle Body Actuator. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $403.99
    • (0 reviews)
      # 35817327
      Audi A4 / A4 Quattro 2012, Cabin Air Filter by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles...
      OE quality products from top original equipmentTop quality materials
      $25.12
    • (1 reviews)
      # 21069132
      Audi A4 / A4 Quattro 2.0L 2012, Cabin Air Filter, Charcoal Type by Denso®. O.E. Recommended Replacement Filter. Premium activated charcoal media. Removes odors in addition to capturing pollen, dust, and other allergens. For people...
      Filter designed to trap contaminants before they enter the vehicle cabinPremium-quality filter media stops particulates down to 0.001 microns
      $16.96
    • (0 reviews)
      # 18677640
      Audi A4 / A4 Quattro 2.0L 2012, Fresh Breeze™ Cabin Air Filter by FRAM®. Size: 9.42" (L) x 11.03" (W) x 1.38" (H). The Fresh Breeze is engineered to filter and deodorize airflow drawn into the vehicle through the A/C, heating,...
      Filters up to 98% of road dust and road pollenRemoves the reoccurring musty smell that can develop in air conditioning and heating systems
      $25.19
    • (0 reviews)
      # 20564751
      Audi A4 / A4 Quattro 2012, Cabin Air Filter by MANN-Filter®. This high-tech cabin air filter ensures the right climate in the passenger compartment by reliably trapping nearly 100% of dust, pollen, soot and other dirt particles...
      Optimum ventilation of the cabin due to very high airflow ratesFilters even the smallest particles out of the airflow
      $18.26 - $19.09
    • (0 reviews)
      # 8726370
      Audi A4 / A4 Quattro 2012, Cabin Air Filter by NPN®. Are you shivering behind the wheel in the winter, or sweating in traffic in the summer? Do you detect the sweet smell of antifreeze in the cabin or see green liquid on the floor?...
      $17.39 - $28.49
    • (0 reviews)
      # 87595374
      Audi A4 2012, Cabin Air Panel by WIX®. Height: 1.377". Inner Diameter Top: Closed. Length: 11.023". MediaType: Activated Carbon. Style: Cabin Air Panel. WIX cabin air filters capture airborne contaminants like dirt, soot, pollen,...
      Provides premium cabin air filtrationPrevents leaves, bugs, dirt, and other debris from entering your vehicle's HVAC system
      $19.81
    • (0 reviews)
      # 23358973
      Audi A4 / A4 Quattro 2012, Premium Line Cabin Air Filter by ATP®. The cabin filter is designed and manufactured to reduce the amount of airborne pollutants and particles entering the cabin. This product by ATP is what you need to...
      Fully meets OE requirements for fit and operationDirect replacement for a proper fit
      $11.01 - $20.16
    • (0 reviews)
      # 12026793
      Audi A4 / A4 Quattro 2012, Cabin Air Filter by TYC®. 1 Piece, Carbon Filter. As soon as your cabin air filter clogs or gets damaged, you notice it right away. And now you don't have to go to the dealer and pay twice the price to...
      OE quality at an affordable priceDirect replacement
      $9.65
    • (0 reviews)
      # 35815138
      Audi A4 / A4 Quattro 2.0L 2012, Air Charge Temperature Sensor by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning...
      OE quality products from top original equipmentTop quality materials
      $29.79
    • (0 reviews)
      # 35814789
      Audi A4 2.0L 2012, Intake Manifold Gasket Set by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import...
      OE quality products from top original equipmentTop quality materials
      $16.51
    • (0 reviews)
      # 99323239
      Audi A4 / A4 Quattro 2012, Air Filter by NPN®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $15.29 - $15.88
    • (0 reviews)
      # 97337863
      Audi A4 / A4 Quattro 2012, Fuel Pressure Sensor by Original Equipment®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair,...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $98.47
    • (0 reviews)
      # 97337853
      Audi A4 / A4 Quattro 2012, Throttle Body by Original Equipment®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, but...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $393.52
    • (0 reviews)
      # 107660077
      Universal Apollo Cold Air Intake System by K&N®. Replacement Filter # RC-5052. Air Filter Material: Cotton Gauze. Clamp Style: No Clamps Required. Filter Material: Cotton Gauze. Height: 4.875" (124 mm). Intake Pipe Finish: Flat...
      Guaranteed to increase horsepower and improve accelerationIdeal for normally aspired engines up to 250 BHP and turbo engines up to 350 BHP
      $129.99 - $209.99
    • (0 reviews)
      # mpn1640291
      Universal Aluminum Raw Aluminum Cold Air Intake System by AEM®. Replacement Filter # 21-2059DK. Use with Pre-Filter # 1-4001. Tube Material: Aluminum. Tube Finish: Raw Aluminum. To deliver cooler air to the engine, this air intake...
      Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle
      $319.99
    • (0 reviews)
      # mpn1632162
      Universal Dragon Air Intake System by Weapon-R®. Inner Diameter 3", 8" Straight Pipe. If you’re hungry for more power, performance and torque, this top-of-the-line intake system is sure to blow you away. This high-flow design of...
      Brings a cold intake charge to the engineComputer designed
      $126.65
    • (0 reviews)
      # mpn1632134
      Universal Secret Weapon Air Intake System by Weapon-R®. Inside Diameter: 3", 8" Straight Pipe. The Secret Weapon Air Intake System uses patented technology to feed the engine 3 times as much air as other systems. As a result,...
      Patented technology increases airflow 3 times more than conventional systemsEach system is tuned to maximize engine performance output
      $169.15
    • (0 reviews)
      # mpn611211179
      Universal 14" Chrome Air Cleaner by Demon Carburetion®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Demon...
      14" in diameter3" deep filter element
      $44.02
    • (0 reviews)
      # mpn1279855
      Universal 3" Air Intake Hump Hose - Blue by Spectre Performance®. Inlet Diameter: 3" (76 mm). Outlet Diameter: 3" (76 mm). Package Quantity: 1. Includes: Coupler. Rooted in racing, Spectre Performance designs and builds every...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $32.40
    • (0 reviews)
      # mpn1349743
      Universal Air Intake Kit by Spectre Performance®. Replacement Filter #: 8168. Air Filter Color: White. Air Filter Height: 2.625" (67 mm). Air Filter Material: Non-woven Synthetic. Intake Pipe Color / Finish: Polished. Intake Pipe...
      Universal air intake kit that fits many applications3" polished aluminum intake tube
      $50.24
    • (1 reviews)
      # mpn1349742
      Universal Air Intake System by Spectre Performance®. Finish: Clear Anodized. Length: 17" (432 mm). Material Used: Aluminum. Outside Diameter: 3" (76 mm). Rooted in racing, Spectre Performance designs and builds every product with...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $40.79
    • (0 reviews)
      # 107660085
      Universal 33 Series Panel Air Filter by K&N®. Filter Material: Cotton Gauze. Includes: 1 Air Filter. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make...
      Improves engine airflowIncreases horsepower and acceleration
      $28.99 - $71.99
    • (0 reviews)
      # 107662523
      Universal Air Filter for the UMP Off-Road Air Box by K&N®. Air Filter Height: 12.5" (318 mm). Air Filter Material: Cotton Gauze. Color: Red. Overall Height: 12.5" (318 mm). Style: Round. Top Finish: Black Powder Coated. Top Style:...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $158.99 - $161.99
    • (0 reviews)
      # 107662569
      Universal Carbon Fiber Air Box Large by K&N®. Filter Material: Cotton Gauze. Filter Re-Oiling Amount: 4.56 oz (135 ml). Height: 6.5" (165 mm). Width: 14" (356 mm). Protect your expensive racing engine and keep it running at peak...
      Attractive carbon fiber front designed for extra strengthCustom foam backing for a snug fit
      $533.99
    • (0 reviews)
      # mpn1961734
      Universal Covered Round Air Filter by K&N®. Replacement Filter # E-3600. Air Filter Height: 3.5" (89 mm). Air Filter Inside Diameter: 7" (178 mm). Air Filter Material: Cotton Gauze. Color: Polished. Filter Re-Oiling Amount: 1.28 oz...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $109.99
    • (0 reviews)
      # 107662648
      Universal Custom Air Cleaner Assembly by K&N®. Air Filter Material: Cotton Gauze. Color: Red. Filter Material: Cotton Gauze. Designed utilizing the latest technology, this Custom Air Cleaner Assembly by K&N features premium quality...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $62.99 - $256.99
    • (0 reviews)
      # 107662903
      Universal Custom Round Air Cleaner Assembly by K&N®. Air Filter Material: Cotton Gauze. Color: Red. Filter Material: Cotton Gauze. Includes: Mounting Hardware. Designed utilizing the latest technology, this Custom Air Cleaner...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $74.99 - $150.99
    • (0 reviews)
      # 107685022
      Universal Drag Racing Scoop Filter by K&N®. Filter Material: Cotton Gauze. Includes: 1 Air Filter.
      $47.99 - $123.99
    • (0 reviews)
      # 107660099
      Universal E Series Oval Air Filter by K&N®. Filter Material: Cotton Gauze. Includes: 1 Air Filter. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make...
      Designed to boost horsepower and rate of accelerationCan be cleaned and used again
      $30.99 - $100.99
    • (0 reviews)
      # 107660139
      Universal E Series Round Air Filter by K&N®. Filter Material: Cotton Gauze. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different...
      Designed to boost horsepower and rate of accelerationCan be cleaned and used again
      $20.51 - $121.99
    • (0 reviews)
      # mpn1950992
      Universal E Series Round Tapered Air Filter by K&N®. Air Filter Large End Diameter: 5.719" (145 mm). Base Outside Diameter: 5.75" (146 mm). Filter Material: Cotton Gauze. Filter Re-Oiling Amount: 1.04 oz (31 ml). Flange Inside...
      $69.99
    • (0 reviews)
      # 107684774
      Universal E Series Tapered Conical Air Filter by K&N®. Filter Material: Cotton Gauze. Includes: 1 Air Filter. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration....
      $40.99 - $64.99
    • (0 reviews)
      # 107663025
      Universal Flow Control Custom Assembly by K&N®. Air Filter Material: Cotton Gauze. Color: Red. Filter Material: Cotton Gauze. Style: Round. Top Style: Plastic. Includes: Mounting Hardware. The K&N Flow Control System utilizes a...
      $197.99 - $257.99
    • (0 reviews)
      # 107662118
      Universal Heavy Duty Round Air Filter by K&N®. Filter Material: Cotton Gauze. Top Style: Metal. Includes: 1 Air Filter. K&N's new line of Heavy Duty commercial grade air filters are washable and have been specially engineered for...
      Washable and reusableEasy to clean
      $72.99 - $163.99
    • (0 reviews)
      # 107662132
      Universal Heavy Duty Round Straight Air Filter by K&N®. K&N's new line of Heavy Duty commercial grade air filters are washable and have been specially engineered for heavy duty trucks, RV's and agricultural equipment. They use a...
      Washable and reusableEasy to clean
      $148.99 - $317.99
    • (0 reviews)
      # 107662191
      Universal Heavy Duty Round Tapered Air Filter by K&N®. Filter Material: Non-woven Synthetic. K&N's new line of Heavy Duty commercial grade air filters are washable and have been specially engineered for heavy duty trucks, RV's and...
      Washable and reusableEasy to clean
      $223.99 - $260.99
    • (0 reviews)
      # 107662202
      Universal Heavy Duty Round Tapered Canister Air Filter by K&N®. Filter Material: Non-woven Synthetic. Top Style: Metal. Get better performance, superior engine protection and more economical operation with a K&N Air Filter. K&N...
      Improves engine airflowIncreases horsepower and acceleration
      $148.99 - $410.99
    • (0 reviews)
      # mpn1961733
      Universal Midget Series Custom Assembly by K&N®. Replacement Filter # RE-0970. Air Filter Height: 3" (76 mm). Air Filter Inside Diameter: 4.625" (117 mm). Air Filter Material: Cotton Gauze. Clamp Style: Mini. Color: Red. Filter...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $120.99
    • (0 reviews)
      # 107686027
      Universal Panel Air Filter by K&N®. Filter Material: Cotton Gauze. Height: 1.313" (33 mm). Outside Width: 19.625" (498 mm). Includes: 1 Air Filter, 1 K&N 1oz Sealing Grease. Get better performance, superior engine protection and...
      Improves engine airflowIncreases horsepower and acceleration
      $132.99 - $224.99
    • (0 reviews)
      # mpn1915181
      Universal Parallelogram Air Filter by K&N®. Filter Material: Cotton Gauze. Filter Re-Oiling Amount: 2.01 oz (59 ml). Height: 3" (76 mm). Inside Length: 12.75" (324 mm). Inside Width: 11.375" (289 mm). Outside Length: 14.75" (375...
      Designed to boost horsepower and rate of accelerationCan be cleaned and used again
      $78.99
    • (0 reviews)
      # 107686053
      Universal Power Sport Oval Tapered Air Filter by K&N®. Filter Material: Cotton Gauze. Includes: 1 Air Filter. K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles,...
      Designed to increase horsepower and accelerationHundreds of sizes and shapes for most applications
      $42.99 - $152.99
    • (0 reviews)
      # 107686202
      Universal Power Sport Round Air Filter by K&N®. Filter Material: Cotton Gauze.
      $43.99 - $74.99
    • (0 reviews)
      # mpn1521450532
      Universal Power Sport Round Reverse Air Filter by K&N®. Air Filter Large End Diameter: 7" (178 mm). Base Inside Diameter: 5.375" (137 mm). Base Outside Diameter: 6.25" (159 mm). Filter Material: Cotton Gauze. Filter Re-Oiling...
      $63.99




    Guides & Articles

    • Performance Air Intake Systems
      Can an Air Intake System also Increase My Fuel Economy?
      We all know that achieving better fuel economy while driving puts money back in your pocket and does the environment a favor. But for those who are actively interested in squeezing the most out of every drop of gas, getting more miles per gallon can actually become a sport - especially if a vehicle has a manual transmission that can be upshifted earlier and put into neutral during downhill grades or when coasting to a stop sign.
    • Performance Air Intake Systems
      The Real Cost of Your Car’s Cheap Factory Air Filter
      In today's world, saving money wherever possible has become essential. But it's important not to lose sight of the fact that, sometimes, a product that costs more up front will save you more money over time. In our business, we've seen far too many consumers judge products solely on the basis of their initial cost, completely neglecting any long-term economy and benefits. When it comes to automobiles, "performance" air filters are a perfect example of this.
    • Performance Air Intake Systems
      My Car is Brand New | Why Should I Change My Air Intake System?
      Aftermarket air intake systems have become one of the most popular engine modifications available for late model cars and trucks. An easy question to ask is why are these so popular? After all, didn't engineers who work for your vehicle manufacturer spend years developing the best engine components available? Since power and fuel economy are major selling points these days, it's hard to imagine car companies not doing everything they can to maximize horsepower, miles per gallon, or both.
    • Performance Air Intake Systems
      What are the Different Types of Air Intake Systems?
      There are many types of aftermarket air intake systems that range from simple and inexpensive to elaborate. In the scope of this article, we'll examine the different types of air intakes, what they do, and look at a few specific product examples of each. But in short, performance air intake setups increase airflow into your engine - boosting combustion and creating more horsepower and torque that you can actually feel. Their relatively low cost and easy installation (bolt-on in most cases) keeps them in popular demand by car enthusiasts that own everything from 1.5-liter turbo motors to big block V8 engines.
    • Replacement Air Intake Parts
      Why Does My Car Have a Plastic Intake Manifold?
      An intake manifold is an integrated assembly that sits atop the engine, consisting of a series of tubes which distribute fresh outside air to each and every cylinder. On V-shaped engine blocks, an intake manifold typically sits between the two cylinder banks while inline engines may feature a manifold to the side of the cylinder head. Intake manifolds serve as a mounting point for carburetors, throttle body assemblies, fuel injectors, thermostats, and more depending on vehicle manufacturer engineering preferences. Intake manifolds may also serve to route coolant through dedicated channels in order to remove heat from the engine. Because of their location and functionality, intake manifold assemblies are under constant stress from engine vacuum pressure as well as direct heat from coolant, cylinder combustion gasses, and the cylinder heads to which they are mounted.

    Popular Products

    2012 Audi A4 Performance Air Intake Systems Reviews

    Average rating:  4.5  4.5 - 1 review
    4.5 of 5
    Cold Air
    Looks great, sounds great. Filter was a little troublesome to get on and a concern is the MAF sensor wire being very taught to where it plugs into the intake.
    RPosted by Robert (Saskatoon, SK) /
    2010 Audi A4
    Was this review helpful for you? Yes
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