2001 Toyota 4Runner Performance Air Intake Systems

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    • Injen® PF Series Air Intake System
      (1 reviews)
      # 359890
      Toyota 4Runner 3.4L V6 2001, PF Series Air Intake System by Injen®. The PF Series Air Intake System is made for high performance cars, trucks and SUVs. It features a larger air filter and a larger diameter air intake tube to meet...
      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
    • K&N® 57 Series FIPK Generation II Air Intake System
      (1 reviews)
      # 334037
      Toyota 4Runner 2001, 57 Series FIPK Generation II Air Intake System by K&N®. This kit improves airflow into your engine. It includes a K&N air filter and a custom designed air intake tube. The K&N filter increases the airflow and...
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $267.99
    • K&N® 77 Series High-Flow Performance Polished Air Intake Kit
      (0 reviews)
      # 325116
      Toyota 4Runner 2001, 77 Series High-Flow Performance Air Intake Kit by K&N®. This intake kit is designed for the larger engines typically found in trucks and SUVs. It replaces the factory air intake system with a free flowing K&N...
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $363.99
    • AEM® Brute Force Intake System
      (2 reviews)
      # 55968675
      Toyota 4Runner 2001, Brute Force Intake System by AEM®. These systems are designed for the larger engines typically found in trucks, SUVs and late model fuel-injected muscle cars. Extensive dyno-tuning allows these engines to...
      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
    • AIRAID® Cold Air Dam Intake System
      (0 reviews)
      # 55560016
      Toyota 4Runner 2001, Cold Air Dam Intake System by AIRAID®. The Cold Air Dam Intake System positions a large 360º AIRAID air filter with a huge air inlet in the stock location, but encloses it in a housing that seals against the...
      Increases airflow to the engineIsolates the air filter from engine heat, enabling it to take in cooler, denser air
      $316.10 - $324.26
    • AIRAID® Jr. Intake Kit
      (0 reviews)
      # 66701825
      Toyota 4Runner 2001, Jr. Intake Kit by AIRAID®. This is AIRAID's entry level performance intake kit. It improves airflow and performance while being economical and simple to install. The kit includes an AIRAID lifetime guarantee...
      Increases airflow to the engineIncreases horsepower and torque, improves performance
      $183.50 - $191.66
    • VOLANT® CAI Kit with Pro 5 Filter
      (0 reviews)
      # 346650
      Toyota 4Runner 2001, Cool Air Intake Kit with Pro 5 Filter and Airbox 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
      $234.70
    • aFe® Stage 2 Cold Air Intake System
      (0 reviews)
      # 926156
      Toyota 4Runner 2001, Stage 2 Cold Air Intake System by aFe®. The aFe Stage 2 Cold Air Intake System replaces your entire factory air intake system with a large high-flow aFe air filter, open element airbox/heat shield and a...
      $325.00
    • Spectre Performance® Air Intake Kit
      (1 reviews)
      # 12039302
      Toyota 4Runner 2001, Air Intake Kit by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $152.99
    • Spectre Performance® Panel HPR™ OE Replacement Air Filter
      (0 reviews)
      # 49224975
      Toyota 4Runner 2001, Panel HPR™ OE Replacement Air Filter by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $22.03
    • K&N® 33 Series Panel Air Filter
      (0 reviews)
      # 321612
      Toyota 4Runner 2001, 33 Series Panel Air Filter by K&N®. A K&N 33 series OE replacement air filter is designed to increase horsepower and acceleration. These washable and reusable panel air filters are easy to install because they...
      Improves engine airflowIncreases horsepower and acceleration
      $63.99
    • AIRAID® Air Filter
      (0 reviews)
      # 80300734
      Toyota 4Runner 2001, 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...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $73.34 - $81.50
    • GREEN FILTER® Factory Replacement Air Filter
      (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
    • HKS® Super Hybrid Filter
      (0 reviews)
      # 70194090
      Toyota 4Runner 5VZFE Engine With VZN185W Chassis 2001, Super Hybrid Filter by HKS®. This is an aftermarket part that replaces factory OE # 17801-46060. 3 layered filter divides, collects intake air and smoothes air flow. It enables...
      With high strength double frame, strong frame can be used for high horsepower.Shape of re-designed top frame enables smooth air flow.
      $35.00
    • S&B® Cotton 8-ply Air Filter
      (0 reviews)
      # 85544411
      Toyota 4Runner 2001, Cotton 8-ply Air Filter by S&B®. Oil Color: Red. All filters S&B produces is manufactured to the highest standards and submitted for CARB approval.
      $55.00
    • S&B® Cotton Cleanable 8-ply Air Filter
      (0 reviews)
      # 85544507
      Toyota 4Runner 2001, Cotton Cleanable 8-ply Air Filter by S&B®. All filters S&B produces is manufactured to the highest standards and submitted for CARB approval.
      $46.93
    • JET® Power-Flo™ Mass Air Flow Sensor
      (0 reviews)
      # 13545964
      Toyota 4Runner 2001, Power-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 your...
      Increase Horsepower And Low End TorqueImproved Mileage
      $158.96
    • Spectre Performance® 3" Airflow Sensor Mount
      (1 reviews)
      # 12036602
      Toyota 4Runner 2001, 3" Airflow Sensor Mount by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack!...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $8.52
    • aFe® Silver Bullet Throttle Body Spacer
      (0 reviews)
      # 924911
      Toyota 4Runner 3.4L 2001, Silver Bullet Throttle Body Spacer by aFe®. What is inexpensive, takes only a few minutes to install, and results in more power and improved throttle response? The aFe Silver Bullet! The Silver Bullet...
      Improves performanceImproves fuel economy
      $109.00
    • Taylor Cable® Throttle Body Spacer
      (0 reviews)
      # 9409419
      Toyota 4Runner V6 3.4L 2001, Throttle Body Spacer by Taylor Cable®. Helix Power Throttle Body Spacers increase airflow to improve cylinder filling, while the variable venturi aperture shape enhances turbulence for a more complete...
      Precision machined from solid T-6061 billet aluminumUp to 22 hp gains
      $92.71
    • AIRAID® Modular Intake Tube
      (1 reviews)
      # 433611
      Toyota 4Runner 2001, Modular Intake Tube by AIRAID®. More airflow to your engine will result in better throttle response and more horsepower and torque. This air intake tube can increase airflow to your engine by as much as 400...
      Increases airflow to the engineIncreases horsepower and torque, improves performance
      $137.60
    • AIRAID® EconoAid™ Throttle Body Spacer
      (0 reviews)
      # 66700577
      Toyota 4Runner 2001, EconoAid™ Throttle Body Spacer by AIRAID®. The blades in the patented EconoAid™ Throttle Body Booster cause a spinning action of the incoming air charge as it passes through the throttle body. This...
      Enhances fuel atomization, which improves combustion and engine efficiencyIncreases low end torque and fuel economy
      $30.59
    • AIRAID® PowerAid™ Throttle Body Spacer
      (0 reviews)
      # 434845
      Toyota 4Runner 2001, PowerAid™ Throttle Body Spacer by AIRAID®. The patented Helix Bore in the PowerAid™ Throttle Body Spacer causes a spinning action of the incoming air charge as it passes through the throttle body. This...
      Enhances fuel atomization, which improves combustion and engine efficiencyIncreases low end torque and fuel economy
      $124.34
    • FRAM® Extra Guard™ Rigid Panel Air Filter
      (0 reviews)
      # 18683418
      Toyota 4Runner 2001, Extra Guard™ Rigid Panel Air Filter by FRAM®. Size: 9.66" (L) x 8.19" (W) x 2.19" (H). Most dirt and dust enters the engine through the air filter and FRAM Extra Guard is engineered to provide twice the air...
      Provides better air filtration for improved performancePrevents damaging particles from entering your engine
      $16.49
    • Hastings® Air Filter
      (0 reviews)
      # 21456959
      Toyota 4Runner 2001, 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 exceed...
      Filters out dirt and dust in the air preventing them from entering the engineHeavy duty construction for long service life
      $18.72
    • Full® Air Filter
      (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
      $19.48
    • ACDelco® Professional™ Air Filter
      (0 reviews)
      # 73519694
      Toyota 4Runner 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
      $26.13
    • Beck Arnley® Air Filter
      (0 reviews)
      # 35811747
      Toyota 4Runner 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 vehicles in...
      OE quality products from top original equipmentTop quality materials
      $16.25
    • WIX® Air Filter Panel
      (0 reviews)
      # 64380167
      Toyota 4Runner 2001, Air Filter Panel by WIX®. Considering as much as 10,000 gallons of air must pass through the air filter for every gallon of fuel the engine consumes, WIX air filters play a vital part in preventing foreign...
      Prevents foreign particles like carbon, soot and abrasives from entering the fuel mixEnsures superior engine protection
      $22.29
    • Dorman® Mass Air Flow Sensor
      (0 reviews)
      # 25578179
      Toyota 4Runner 2001, Mass Air Flow Sensor by Dorman®. This is an aftermarket part that replaces factory OE # L3K9132159U. Save time, money, and labor by replacing only the MAF sensor instead of the entire mass air flow assembly....
      Constructed from high-quality materials to successfully resist damage from extreme underhood temperatures and environmental factors, such as humidityDirect fit for a trouble-free replacement
      $56.67
    • A1 Cardone® Remanufactured Mass Air Flow Sensor
      (0 reviews)
      # 35536371
      Toyota 4Runner 2001, Remanufactured Mass Air Flow Sensor by A1 Cardone®. Mounting Hole Count: 2. Configuration Type: Bolt-On. Without Housing. With Mass Air Flow Sensor, Instruction Sheet. This is an aftermarket part that replaces...
      50-state emissions street legalThe finest quality at a great price
      $47.99
    • Genuine® Air Mass Meter
      (0 reviews)
      # 8786305
      Toyota 4Runner W/O Housing 2001, Air Mass Meter 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...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $128.81
    • ACDelco® Professional™ Mass Air Flow Sensor
      (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.
      $76.15
    • Beck Arnley® Mass Air Flow Sensor
      (0 reviews)
      # 35811758
      Toyota 4Runner 2001, Mass Air Flow Sensor by Beck Arnley®, without Housing. 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
      $94.45
    • Delphi® Mass Air Flow Sensor
      (0 reviews)
      # 24556955
      Toyota 4Runner 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
      $78.48
    • Genuine® Air Intake Hose
      (1 reviews)
      # 44712152
      Toyota 4Runner 2001, Air Intake Hose by Genuine®. 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 replacement, but...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $55.04
    • Denso® Mass Air Flow Sensor
      (0 reviews)
      # 21071433
      Toyota 4Runner 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
      $81.52
    • Genuine® Air Mass Meter Boot
      (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
      $83.19
    • Victor Reinz® Intake Manifold Gasket Set
      (0 reviews)
      # 24047056
      Toyota 4Runner 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...
      $87.01
    • Standard® Mass Air Flow Sensor Connector
      (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
      $35.84
    • JET® Powr-Flo Throttle Body Spacer
      (0 reviews)
      # 13546018
      Toyota 4Runner 2001, Powr-Flo Throttle Body Spacer by JET®. JET Performance Power-Flo Throttle Body Spacers were designed using the latest aerospace technology along with JET's 35 plus years of engineering fuel systems for some of...
      Increased Mid-Range Horsepower And TorqueImproved Throttle Response/Increased Fuel Economy
      $74.99
    • Magnum Gasket® Intake Manifold Gasket Set
      (0 reviews)
      # 82704711
      Toyota 4Runner 2001, Intake Manifold Gasket Set by Magnum Gasket®. Standard Material. Magnum's Gasket engineers have utilized their many years of engine sealing experience to select the right technology choice for each of the...
      $14.13
    • NPN® Air Filter
      (0 reviews)
      # 84195120
      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
      $8.65 - $10.16
    • K&N® Apollo Cold Air Intake System
      (0 reviews)
      # 534642
      Apollo Cold Air Intake System by K&N®. Cooler air inlet temperatures mean more horsepower. This universal kit turns any air intake system into a Cold Air intake system. It replaces the OEM airbox with a K&N air filter in a special...
      $129.99 - $209.99
    • Spectre Performance® Air Intake Hump Hose
      (0 reviews)
      # 12037463
      Universal Air Intake Hump Hose by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All products...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $32.40 - $37.02
    • Spectre Performance® Air Intake Tube Collar Clamp
      (0 reviews)
      # 12039508
      Universal Air Intake Tube Collar Clamp by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $8.52 - $12.78
    • AIRAID® Cone Air Filter
      (5 reviews)
      # 80390519
      Universal Cone 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...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $25.40 - $109.04
    • Vibrant Performance® The Classic Performance Air Filter
      (0 reviews)
      # 78903132
      Universal The Classic Performance Air Filter by Vibrant Performance®. Vibrant Performance “Classic Filters” feature a 4 ply pleated cotton-gauze element that allows for significantly more airflow than a stock filter while...
      Made of High Quality MaterialsIdeal for All Motor and Forced Induction race applications
      $21.95 - $65.00
    • Holley® 10" Chrome Round Air Cleaner (120-145)
      (0 reviews)
      # mpn358495189
      10" Chrome Round Air Cleaner by Holley®. The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for 40...
      Gold Dichromate finish for extreme off road environmentsSingle feed fuel inlet for ease of installation
      $35.82
    • Holley® 14" Chrome Round Air Cleaner (120-102)
      (0 reviews)
      # mpn358495186
      14" Chrome Round Air Cleaner by Holley®.
      $44.02
    • Holley® 14" Power Shot Air Cleaner (120-146)
      (0 reviews)
      # mpn358495190
      14" Power Shot Air Cleaner by Holley®. The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for 40...
      Gold Dichromate finish for extreme off road environmentsSingle feed fuel inlet for ease of installation
      $75.81
    • Holley® Air Cleaner Replacement Element (120-144)
      (0 reviews)
      # mpn620677737
      Air Cleaner Replacement Element by Holley®. The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for...
      Gold Dichromate finish for extreme off road environmentsSingle feed fuel inlet for ease of installation
      $37.88
    • Holley® Custom Oval Air Cleaner (120-141)
      (0 reviews)
      # mpn358495188
      Custom Oval Air Cleaner by Holley®. Holley mechanical fuel pumps range from 80 GPH to 225 GPH in many various applications to meet the fuel demands of most engines.
      High output fuel flowFlows 110 GPH free flow
      $115.95
    • Holley® Powershot Air Filter
      (0 reviews)
      # 63646440
      Powershot Air Filter by Holley®. The Holley GM LS3/L92 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not...
      Single Plane with Isolated PlenumSquare Bore Carburetor Mounting Flange
      $52.23 - $60.42
    • Injen® High Performance Air Filter
      (19 reviews)
      # 375936
      Universal High Performance Air Filter by Injen®. Replace your worn out air filter with this high flow High Performance filter. It features a built-in velocity stack for added performance, urethane top and base to resist heat...
      Improves engine airflowIncreases horsepower and acceleration
      $49.32 - $57.54
    • K&N® Dual Flange Oval Straight Air Filter
      (0 reviews)
      # 25513976
      Universal Dual Flange Oval Straight Air Filter by K&N®. Get better performance, superior engine protection and more economical operation with a K&N Air Filter. K&N Universal Air Filters are available for just about any application.
      Improves engine airflowIncreases horsepower and acceleration
      $38.99 - $217.99
    • K&N® Oval Tapered Air Filter
      (0 reviews)
      # 25636561
      Universal Oval Tapered Air Filter by K&N®. Get better performance, superior engine protection and more economical operation with a K&N Air Filter. K&N Universal Air Filters are available for just about any application.
      Improves engine airflowIncreases horsepower and acceleration
      $32.99 - $196.99
    • K&N® Round Tapered Air Filter
      (6 reviews)
      # 25611518
      Universal Round Tapered Air Filter by K&N®. Get better performance, superior engine protection and more economical operation with a K&N Air Filter. K&N Universal Air Filters are available for just about any application.
      Improves engine airflowIncreases horsepower and acceleration
      $22.08 - $122.99
    • AEM® Clamp-On Round DryFlow Racing Air Filter
      (0 reviews)
      # 328142
      Universal Clamp-On Round DryFlow Racing Air Filter by AEM®. Let your engine breathe with an AEM DryFlow Racing filter! Every DryFlow filter is engineered to exceed the engine's normal airflow requirement. And thanks to AEM's...
      Exceeds the engine’s normal airflow capacityEasy to clean – no oiling required
      $68.99
    • AEM® Oval DryFlow Air Filter
      (0 reviews)
      # 313145
      Universal Oval DryFlow Air Filter by AEM®. Let your engine breathe with an AEM DryFlow filter! Every DryFlow filter is engineered to exceed the engine's normal airflow requirement. And thanks to AEM's DryFlow technology, cleaning...
      Exceeds the engine’s normal airflow capacityEasy to clean – no oiling required
      $39.99 - $97.99




    Guides & Articles

    • Performance Parts
      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 Parts
      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 Parts
      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 Parts
      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.
    • Performance Parts
      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 - 2 reviews
    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
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