2001 Toyota 4Runner Performance Air Intake Systems

Change Vehicle
1 - 60 of 553 results
show:
sort by:
    • (1 review)
      # 334037
      Toyota 4Runner 3.4L 2001, 57 Series FIPK Generation II High-Density Polyethylene Black Air Intake System with Intake Pipe with Heat Shield by K&N®. Replacement Filter # RC-4700. Use with Pre-Filter # RC-4700DK. Air Filter Height:...
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $267.99
    • (0 reviews)
      # 325116
      Toyota 4Runner 3.4L 2001, 77 Series High-Flow Performance Aluminum Polished Air Intake System by K&N®. Replacement Filter # RF-1042. Use with Pre-Filter # RF-1042DK. Air Filter Height: 6.5" (165 mm). Air Filter Large End Diameter:...
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $363.99
    • (1 review)
      # 359890
      Toyota 4Runner 3.4L 2001, PF Series Power-Flow Air Intake System by Injen®. HP Gain: +11.1 hp. Torque Gain: +12.3 lbs. x ft. Includes: X-1021 Filter. The PF Series Air Intake System is made for high performance cars, trucks and...
      A large air filter and large diameter air intake tube to maximize air volumeUses the patented MR Technology tuning process to ensure the air/fuel ratio is within optimum limits
      $257.35
    • (2 reviews)
      # 253341
      Toyota 4Runner 3.4L 2001, Brute Force™ Metal Air Intake System by AEM®. Replacement Filter # 21-202DK. Use with Pre-Filter # 1-4000. Includes: 4 Hose Clamps. Tube Material: Metal. These systems are designed for the larger engines...
      Dyno-tuned air intake pipe constructed of mandrel-bent 6061 aluminum for smooth airflowEvery system includes the innovative, oil-free, high-flow AEM Dryflow™ air filter
      $256.99 - $271.99
    • (0 reviews)
      # 120886572
      Toyota 4Runner 3.4L 2001, Cold Air Dam Intake System with SynthaFlow® Red Air Filter and Black Intake Tube by AIRAID®. Replacement Filter #: 700-451. Use with Pre-Filter #: 799-456. Air Filter Color: Red. Air Filter Material:...
      Increases airflow to the engineIsolates the air filter from engine heat, enabling it to take in cooler, denser air
      $316.10
    • (0 reviews)
      # 55560015
      Toyota 4Runner 3.4L 2001, Cold Air Dam Intake System with SynthaMax® Air Filter by AIRAID®. Use with Pre-Filter #: 799-456. Air Filter Material: Non-woven Synthetic. Air Filter Outlet Shape: Round. Intake Pipe Color: Black. Intake...
      Increases airflow to the engineIsolates the air filter from engine heat, enabling it to take in cooler, denser air
      $324.26
    • (0 reviews)
      # 433502
      Toyota 4Runner 3.4L 2001, Jr. Intake Kit with SynthaFlow® Air Filter and Intake Tube by AIRAID®. Replacement Filter #: 850-054. Air Filter Color: Red. Air Filter Material: Cotton Gauze & Non-woven Synthetic. Air Filter Outlet...
      Increases airflow to the engineIncreases horsepower and torque, improves performance
      $183.50
    • (0 reviews)
      # 433503
      Toyota 4Runner 3.4L 2001, Jr. Intake Kit with SynthaMax® Air Filter and Intake Tube by AIRAID®. Replacement Filter #: 851-054. Air Filter Color: Red. Air Filter Material: Non-woven Synthetic. Air Filter Outlet Shape: Round. Intake...
      Increases airflow to the engineIncreases horsepower and torque, improves performance
      $191.66
    • (0 reviews)
      # 100728545
      Toyota 4Runner 2001, Dragon Air Intake System by Weapon-R®. Weapon-R Intake Systems are CNC Mandrel Bent out of 6061 aluminum, and then Hand Tig Welded to ensure a positive seal and proper fitment. Each one of our intake systems is...
      Custom designed and engineered for each applicationEach system is tuned to maximize engine performance output
      $186.15 - $191.15
    • (0 reviews)
      # 100729167
      Toyota 4Runner 3.4L 2001, Secret Weapon Air Intake System by Weapon-R®. Pipe Finish: Polished. Filter Cage Finish: Gunmetal. Foam Filter Finish: Black. The Secret Weapon Air Intake System uses patented technology to feed the engine...
      Patented technology increases airflow 3 times more than conventional systemsEach system is tuned to maximize engine performance output
      $228.65
    • (0 reviews)
      # 926156
      Toyota 4Runner 2001, Magnum Force Stage 2 Intake System by aFe®. HP Gain: +8 hp. TQ Gain: +10 lbs. x ft. Includes: Air Filter, 1-Piece Black Powdercoat Heat Shield, Dyno Tested Tube. The aFe Stage 2 Cold Air Intake System replaces...
      Improves airflow to your engineIsolates the air filter from engine heat, enabling it to take in cooler, denser air
      $325.00
    • (1 review)
      # 12039292
      Toyota 4Runner 3.4L 2001, Air Intake System by Spectre Performance®. Air Filter Height: 5.719" (145 mm). CARB EO Number: D-629-4. Intake Pipe Color: Polished. Intake Pipe Material: Aluminum. Includes: 5 Clamps, 1 Coupler. Rooted in...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $152.99
    • (0 reviews)
      # 102504335
      Toyota 4Runner 3.4L 2001, Cold Air Intake System with Pro 5 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 completely...
      Protective and insulating AirboxQuicker throttle response
      $224.25
    • (0 reviews)
      # 124920120
      Toyota 4Runner 3.4L 2001, 33 Series Panel Air Filter by K&N®. Air Filter Color: Red. Filter Material: Cotton Gauze. Filter Re-Oiling Amount: 1.52 oz (45 ml). Height: 1.313" (33 mm). Outside Length: 9.563" (243 mm). Outside Width:...
      Improves engine airflowIncreases horsepower and acceleration
      $63.99
    • (0 reviews)
      # 436794
      Toyota 4Runner 3.4L 2001, SynthaFlow® Panel Air Filter by AIRAID®. Filter Material: Cotton Gauze & Non-Woven Synthetic. Quantity: Sold individually. Includes: 1 Air Filter. Advanced air filtration technology, superior construction...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $73.34
    • (0 reviews)
      # 436795
      Toyota 4Runner 3.4L 2001, SynthaMax® Panel Red Air Filter by AIRAID®. Filter Material: Non-woven Synthetic. Quantity: Sold individually. Includes: 1 Air Filter. Advanced air filtration technology, superior construction and the...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $81.50
    • (0 reviews)
      # 920031
      Toyota 4Runner 2001, Magnum Flow Pro 5R Flat Panel Air Filter by aFe®. Constructed with 100% polyurethane on all four sides, this high flow, oiled OE replacement performance filter will out flow stock paper filter for improved...
      Improves airflow for better performance and accelerationPre-oiled, washable/reuseable air filter for long service life with life-time warranty
      $73.95
    • (0 reviews)
      # 103805778
      Toyota 4Runner 2001, Magnum Flow Pro Dry S Panel Air Filter by aFe®. Constructed with 100% polyurethane on all four sides, this high flow "oil-free" OE replacement performance filter will outflow stock paper filter for improved...
      For Improved Horsepower And TorqueLimited Lifetime Warranty
      $73.95
    • (0 reviews)
      # 79118306
      Toyota 4Runner 3.4L 2001, Power Intake Panel Filter by APEXi®. Air Filter Color: Red. Air Filter Shape: Panel. Some manufacturers of performance air filters make aggressive claims about their filter's ability to make power, but...
      Progressive-density filter element improves power and efficiency, without compromising ability to filter dust and dirtDry-type filter element requires no oiling, and will not foul air flow sensors
      $55.92
    • (0 reviews)
      # 56291060
      Toyota 4Runner 2001, Factory Replacement Air Filter by GREEN FILTER®. Replace your factory air cleaner filter element with a Green Filter oiled-cotton filter and never buy another filter as long as you own your vehicle. Enjoy...
      Cleanable, reusable filter element will outlast your carTraps particles as small as 5 microns
      $48.55
    • (0 reviews)
      # 118601123
      Toyota 4Runner 3.4L 2001, HPR™ Panel Air Filter by Spectre Performance®. Air Filter Color: Red. Filter Material: Non-woven Synthetic. Height: 1.313" (33 mm). Oil Amount: 45 ml (2 oz). Outside Length: 9.563" (243 mm). Outside...
      High performance and high air flow filterFilter media is non-woven synthetic and pre-dyed
      $26.35
    • (0 reviews)
      # 70193155
      Toyota 4Runner With VZN185W Chassis 2001, Super Hybrid Filter by HKS®. 3 layered filter divides, collects intake air and smoothes air flow. It enables quick response that is required for sport filter. Newly developed Non-woven...
      With high strength double frame, strong frame can be used for high horsepower.Shape of re-designed top frame enables smooth air flow.
      $30.63
    • (0 reviews)
      # 141087697
      Toyota 4Runner Gas 2001, Cotton Cleanable 8-ply Air Filter by S&B®. All S&B air filters maintain high air flow characteristics designed to increase horsepower and acceleration. Each filter S&B produces is manufactured to the...
      High quality at an affordable priceExpertly made from premium materials
      $46.93
    • (2 reviews)
      # 13545964
      Toyota 4Runner 3.4L 2001, Powr-Flo™ Mass Air Flow Sensor by JET®. JET Powr-Flo Mass Airflow Sensors will increase your engine's horsepower, low-end torque, and mileage by replacing the restrictive stock MAF sensor which limits...
      Increase Horsepower And Low End TorqueImproved Mileage
      $158.96
    • (0 reviews)
      # 78060213
      Toyota 4Runner 3.4L 2001, Mass Air Flow Sensor by Spectra Premium®. Includes Sensor only. Spectra Premium’s complete line of new Mass Air Flow Sensors, featuring Ceramic PC boards to ensure premium performance and durability.
      Provide more consistent voltage to eliminate engine rough idle problemsPlatinum connector threads reduce the number of connection points for faster reaction to change
      $63.76
    • (1 review)
      # 433611
      Toyota 4Runner 3.4L 2001, Modular Intake Tube by AIRAID®. Intake Pipe Color: Black. Intake Pipe Material: High-Density Polyethylene. Quantity: Sold individually. Includes: 4 Clamps, 2 Couplers. More airflow to your engine will...
      Increases airflow to the engineIncreases horsepower and torque, improves performance
      $137.60
    • (0 reviews)
      # 66700577
      Toyota 4Runner 3.4L 2001, EconoAid™ Throttle Body Spacer by AIRAID®. Finish: SL. Material Used: Aluminum. Thickness: 0.032" (1 mm). The blades in the patented EconoAid™ Throttle Body Booster cause a spinning action of the...
      Enhances fuel atomization, which improves combustion and engine efficiencyIncreases low end torque and fuel economy
      $30.59
    • (0 reviews)
      # 434845
      Toyota 4Runner 3.4L 2001, PowerAid™ Throttle Body Spacer by AIRAID®. Finish: Anodized Red. Material Used: Billet Aluminum. Thickness: 1" (25 mm). Quantity: Sold individually. Includes: Gaskets, Mounting Hardware. The patented...
      Enhances fuel atomization, which improves combustion and engine efficiencyIncreases low end torque and fuel economy
      $124.34
    • (0 reviews)
      # 924911
      Toyota 4Runner 2001, Silver Bullet Throttle Body Spacer by aFe®. Billet Aluminum, Serrated/Helix Combination, Longer Intake Track. What is inexpensive, takes only a few minutes to install, and results in more power and improved...
      Improves performanceImproves fuel economy
      $109.00
    • (0 reviews)
      # 13545585
      Toyota 4Runner 3.4L 2001, Powr-Flo™ Throttle Body Spacer by JET®. JET Performance Powr-Flo Throttle Body Spacers were designed using the latest aerospace technology along with JET's 35 plus years of engineering fuel systems for...
      Increased Mid-Range Horsepower And TorqueImproved Throttle Response/Increased Fuel Economy
      $100.49
    • (0 reviews)
      # 89034217
      Toyota 4Runner 2001, Flange for Denso MAF Sensor by Radium®. Weld-on CNC machined mass air flow flange for a Denso air meter. Perfect for those designing their own custom inlet pipes. Machined radius is designed to be used with a...
      High quality at an affordable priceExpertly made from premium materials
      $33.20
    • (0 reviews)
      # 116551862
      Toyota 4Runner 3.4L 2001, MaxDry™ STL Molded Rubber on Steel Carrier Lower Intake Manifold Gasket and Upper Gasket Set by Magnum Gasket®. Premium Molded Rubber on Steel Carrier. Magnum's Gasket engineers have utilized their many...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $66.43
    • (0 reviews)
      # 116551867
      Toyota 4Runner 3.4L 2001, Upper Intake Manifold Gasket Set by Magnum Gasket®. Magnum's Gasket engineers have utilized their many years of engine sealing experience to select the right technology choice for each of the Intake...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $14.13
    • (0 reviews)
      # 73519694
      Toyota 4Runner 3.4L 2001, Professional™ Air Filter by ACDelco®. Designed utilizing the latest technology, this Professional Air Filter by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $27.23
    • (0 reviews)
      # 35807330
      Toyota 4Runner 3.4L 2001, 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
      $16.25
    • (0 reviews)
      # 78093671
      Toyota 4Runner 3.4L 2001, Air Filter by Bosch®. Dirty air filters can cause decreased fuel mileage, increased engine wear, and even problems starting the engine. Check your engine air filter at every oil change and always replace a...
      Protects Your Engine by Stopping 98% of Engine-Threatening ParticlesPrevention of Unfiltered Air Entering Engine Intake with a High-Quality Seal
      $8.74
    • (0 reviews)
      # 85802328
      Toyota 4Runner 3.4L 2001, 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
      $15.43
    • (0 reviews)
      # 145991263
      Toyota 4Runner 2001, Extra Guard™ Rigid Panel Air Filter by FRAM®. Size: 9.66" (L) x 8.19" (W) x 2.19" (H). Do you feel shaking or shuddering when you engage the clutch; hear grinding noise when you shift gears? Does your engine...
      Quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $16.49
    • (0 reviews)
      # 8011994
      Toyota 4Runner 2001, Air Filter by Full®. 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 waste...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $18.36
    • (0 reviews)
      # 21456473
      Toyota 4Runner 3.4L 2001, Panel Air Element 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...
      Filters out dirt and dust in the air preventing them from entering the engineHeavy duty construction for long service life
      $19.19
    • (0 reviews)
      # 64380167
      Toyota 4Runner 3.4L US-Built 2001, Air Filter Panel by WIX®. Height: 2.031". Inner Diameter Top: Closed. Length: 9.650". MediaType: Synthetic. Style: Air Filter Panel. Considering as much as 10,000 gallons of air must pass through...
      Prevents foreign particles like carbon, soot and abrasives from entering the fuel mixEnsures superior engine protection
      $19.81
    • (0 reviews)
      # 73518496
      Toyota 4Runner 2001, Professional™ Remanufactured Mass Air Flow Sensor by ACDelco®. How your engine breathes determines how well it runs. And there’s no better way to keep your engine breathing right – and running great –...
      ACDelco GM OE emission parts, fuel injectors and control modules earn the name ACDelco by being put through a variety of tests, often under extreme and unusual conditions.Measure amount of air entering the engine to determine the most efficient air/fuel mixture for achieving clean burns.
      $79.58
    • (0 reviews)
      # 35810881
      Toyota 4Runner 3.4L 2001, New Mass Air Flow Sensor by Beck Arnley®. Sensor. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to...
      OE quality products from top original equipmentTop quality materials
      $91.50
    • (0 reviews)
      # 35536371
      Toyota 4Runner 2001, Remanufactured Mass Air Flow Sensor by A1 Cardone®. Import. Without Housing. With Instruction Sheet. Mounting Holes: 2. Mounting Type: Bolt-On. MAF Sensors precisely track O.E. output curves and maintain spec...
      50-state emissions street legalThe finest quality at a great price
      $49.14
    • (0 reviews)
      # 24556955
      Toyota 4Runner 3.4L 2001, Mass Air Flow Sensor by Delphi®. When it comes to MAF sensors, communication with the ECM is key. That’s why Delphi MAF sensors use all new parts - never remanufactured parts that could harbor debris and...
      Extensive coverageAvailable in a variety of bore diameters to accommodate a wide range of airflow, resulting in a robust design for electrical overloads
      $76.90
    • (0 reviews)
      # 8786297
      Toyota 4Runner 2001, Air Mass Meter by Genuine®. Meter/Sensor Only. 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...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $129.79
    • (0 reviews)
      # 97164535
      Toyota 4Runner 2001, Intermotor™ Mass Air Flow Sensor by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $67.13
    • (1 review)
      # 44712152
      Toyota 4Runner 2001, Air Intake Hose by Genuine®. Location: To Engine. 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...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $56.45
    • (0 reviews)
      # 21071389
      Toyota 4Runner Gas 2001, Mass Air Flow Sensor 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 engineering and...
      Glass film coated sensing elements reduces contamination and improves reliabilityPlatinum wire sensing element responds quickly to changes in air flow
      $88.98
    • (0 reviews)
      # 8774493
      Toyota 4Runner 2001, Air Mass Meter Boot by Genuine®. 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...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $84.63
    • (0 reviews)
      # 63762543
      Toyota 4Runner 2001, Mass Air Flow Sensor Connector by Standard®. 5 Terminals Female Connector. Finish: Black. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $31.36
    • (0 reviews)
      # 35811753
      Toyota 4Runner 3.4L 2001, Intake Manifold Gasket Set by Beck Arnley®. Include: Intake and Plenum Gaskets. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts...
      OE quality products from top original equipmentTop quality materials
      $52.56
    • (0 reviews)
      # 139916858
      Toyota 4Runner 2001, Intake Plenum Gasket by Mahle®.
      $9.88
    • (0 reviews)
      # 24047056
      Toyota 4Runner 3.4L 2001, Intake Manifold Gasket Set by Victor Reinz®, Use 1 per Car. Includes: Plenum Gasket. OEM Standard Part. Material: Intake Manifold: Multi-Layered Steel. Plenum: Rubber Coated Beaded Steel. Included: Plenum...
      OE quality fluids from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $90.06
    • (0 reviews)
      # 81855608
      Toyota 4Runner 3.4L 2001, Intake Manifold Gasket Set by DNJ Engine Components®. Includes: Intake Gasket. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $47.42
    • (0 reviews)
      # 18985228
      Toyota 4Runner 3.4L 2001, Lower and Upper Intake Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $100.40
    • (0 reviews)
      # 8714687
      Toyota 4Runner 2001, Intake Manifold Gasket by Nippon Reinz®. Manifold to Head. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $46.44
    • (0 reviews)
      # 8714900
      Toyota 4Runner 2001, Intake Plenum Gasket by Nippon Reinz®. Air Surge Tank To Intake Manifold. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $14.20
    • (0 reviews)
      # 84194320
      Toyota 4Runner 2001, 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 waste...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $8.75
    • (0 reviews)
      # 107660077
      Universal Apollo Flex Hose Flat Black Cold Air Intake System by K&N®. Replacement Filter # RC-5052. Air Filter Material: Cotton Gauze. Air Filter Material: Cotton Gauze. Air Filter Color: Red. Clamp Style: No Clamps Required....
      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




    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

    2001 Toyota 4Runner Performance Air Intake Systems Reviews

    Average rating:  4.5  4.5 - 1 review
    4.5 of 5
    Just What I Needed
    Fits perfect on my '02 4Runner Limited.
    APosted by Adam (Albuquerque, NM) /
    2002 Toyota 4Runner
    Was this review helpful for you? Yes
    Related 2001 Toyota 4Runner Pages
    2001 Toyota 4Runner Models
    SECURE SHOPPING

    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 CARiD.com, is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.