1991 Honda Civic Si Air Intake
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Injen®IS Series Short Ram Air Intake System with Blue FilterHonda Civic Si 1991, IS Series Short Ram Air Intake System by Injen®. The IS Series is a traditional, underhood air intake system that takes the place of your factory airbox and air filter, and the factory air intake tube. The EA...Improves airflow into the engineIncreases horsepower$218.95 - Injen®RD Series Cold Air Intake System with Blue FilterHonda Civic Si 1991, RD Series Cold Air Intake System by Injen®. The RD Series is made for the enthusiast who wants improved mid-range power. This cold air system positions a high-flow air filter behind the bumper, where it can take in...Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle$349.95
- Stone®Engine Intake Manifold GasketHonda Civic Si 1991, Engine Intake Manifold Gasket by Stone®. Sold Individually. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...Expertly crafted from the highest grade materialsCompliant with the most strict standards for quality$2.47
- Skunk2®MAP SensorHonda Civic Si 1991, MAP Sensor by Skunk2®. Make your engine function at its full efficiency by choosing from our comprehensive selection of top-grade performance air intake parts. Crafted by the industry-leading professionals who use...Engineered to help upgrade your vehicle’s power and overall performanceManufactured from high-grade materials for long-lasting service in various conditions$112.89
- Dorman®OE Solutions™ Throttle Body Position SensorHonda Civic Si 1991, OE Solutions™ Throttle Body Position Sensor by Dorman®. This throttle position sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and...Direct replacement - this throttle position sensor is designed to match the fit and function of the original sensor on specified vehiclesIdeal solution - this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction$29.40
- WVE®Idle Air Control ValveHonda Civic Si 1991, Idle Air Control Valve by WVE®. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate in durability and functionality. Made to...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$300.86
- Skunk2®Throttle BracketHonda Civic Si 1991, Throttle Bracket by Skunk2®. Skunk2 presents the B-Series Throttle Cable Bracket for the Ultra Series Race and Street Manifold. No longer will you need to fabricate your own Throttle Bracket for race applications.Top-grade fuel system upgrade that will take your driving to the next levelDesigned to help you maximize your vehicle’s fuel system efficiency$16.12
- Spectre Performance®Multi-Fit Round Tapered Air FilterMulti-Fit Round Tapered Air Filter by Spectre Performance®. This Spectre High Performance Racing (HPR) Air Filter is a white media clamp-on cone filter that can be used for a wide variety of applications. Using the included adapter...High flow filter designed to fit 3 inch, 3 1/2 inch and 4 inch tubesQuality materials used throughout including washable, oiled synthetic media, urethane, and steel mesh$31.99 - $52.99
- Takeda®Pro Dry S Round Tapered Gray Air FilterPro Dry S Round Tapered Gray Air Filter by Takeda®. The Pro DRY S is the perfect combination of performance, protection and convenience. When you want increased airflow with superior filtration, but ease of maintenance is a high...Improves airflow and engine performanceProvides superior air filtration and engine protection$68.00 - $127.00
- Injen®SuperNano-Web™ Round Straight Blue Air FilterSuperNano-Web™ Round Straight Blue Air Filter by Injen®. This air filter is a major breakthrough in air filtration technology. It features a revolutionary synthetic nanofiber filter media that increases airflow, while capturing and...Revolutionary Nanofiber filter mediaIncreases airflow$73.95 - $77.95
- aFe®Magnum Flow® Pro 5R Round Tapered Air FilterMagnum Flow® Pro 5R Round Tapered Air Filter by aFe®. This high flow Pro 5R air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. Five layers of...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$65.00 - $140.00
- aFe®Magnum Flow® Pro Dry S Round Tapered Gray Air FilterMagnum Flow® Pro Dry S Round Tapered Gray Air Filter by aFe®. This high flow Pro DRY S air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. Layers of...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$68.00 - $121.00
- Injen®Red Air FilterRed Air Filter by Injen®. This air filter is a major breakthrough in air filtration technology. It features a revolutionary synthetic nanofiber filter media that increases airflow, while capturing and holding more dirt than conventional...Revolutionary Nanofiber filter mediaIncreases airflow$66.95 - $115.95
- Spectre Performance®Round Tapered Air FilterRound Tapered Air Filter by Spectre Performance®. Spectre’s clamp-on cone universal air filter. This air filter is a great option for air intakes that use a 3 inch diameter tube, adapter or throttle body. This performance air filter...HPR air filter mediaHigh-flow washable oiled synthetic material$31.99
- aFe®Magnum Flow® Pro Dry S Oval Tapered Gray Air FilterMagnum Flow® Pro Dry S Oval Tapered Gray Air Filter by aFe®. These high flow Pro DRY S air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. With three...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$58.00 - $156.00
- aFe®Magnum Flow® Pro 5R Oval Tapered Air FilterMagnum Flow® Pro 5R Oval Tapered Air Filter by aFe®. These high flow Pro 5R air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. Five layers of...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$58.00 - $156.00
- AIRAID®Track Day® Round Tapered Air FilterTrack Day® Round Tapered Air Filter by AIRAID®. High-performance engines have enormous airflow needs, and racers are constantly looking for a little something extra that will give them an edge over the competition. AIRAID Track Day...Large horsepower and torque gains for race track useRestriction-free filter media with adequate filtration$59.99 - $129.99
- Vibrant Performance®Open Funnel Round Tapered Blue Air Filter with Chrome CapOpen Funnel Round Tapered Blue Air Filter with Chrome Cap by Vibrant Performance®. Make your engine function at its full efficiency by choosing from our comprehensive selection of top-grade performance air intake parts. Crafted by the...Designed with innovative manufacturing techniquesMade with the highest level of professionalism$27.99
- Vibrant Performance®The Classic Performance Round Tapered Red Air Filter with Black CapThe Classic Performance Round Tapered Red Air Filter with Black Cap by Vibrant Performance®. Make your engine function at its full efficiency by choosing from our comprehensive selection of top-grade performance air intake parts....Designed with innovative manufacturing techniquesMade with the highest level of professionalism$62.99 - $79.99
- Wehrli Custom Fabrication®Dry Round Tapered Gray Air FilterDry Round Tapered Gray Air Filter by Wehrli Custom Fabrication®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....Made to ensure the highest level of qualityPrecise engineering provides great longevity$65.96
- aFe®Magnum Flow® Pro 5R Oval Tapered to Round Blue Air FilterMagnum Flow® Pro 5R Oval Tapered to Round Blue Air Filter by aFe®. This high flow Pro 5R air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. Five layers of...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$93.00 - $103.00
- aFe®Magnum Flow® Pro 5R Round Tapered To Oval Blue Air FilterMagnum Flow® Pro 5R Round Tapered To Oval Blue Air Filter by aFe®. With five layers of progressively finer mesh cotton gauze media between 100% polyurethane top and base, this high flow "oiled" inverted conical performance filter...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$103.00
- K&N®Dual Flange Oval Tapered Red Air FilterDual Flange Oval Tapered Red Air Filter by K&N®. K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other...Designed to increase horsepower and accelerationHigh air flow with excellent filtration$74.99 - $249.99
- Volant®Pro 5 Round Tapered Blue Air FilterPro 5 Round Tapered Blue Air Filter by Volant®. Make your engine function at its full efficiency by choosing from our comprehensive selection of top-grade performance air intake parts. Crafted by the industry-leading professionals who...Cleanable and ReusableFive layers of protection$92.90 - $101.90
- aFe®Magnum Flow® Pro Guard 7 Tan Air FilterMagnum Flow® Pro Guard 7 Tan Air Filter by aFe®. This Pro Guard 7 performance air filter outflows the factory intake by 44%. The “Inverted” design of this unique OE replacement filter fully utilized the space in the stock air box...Engineered to help upgrade your vehicle’s power and overall performanceManufactured from high-grade materials for long-lasting service in various conditions$68.00 - $114.00
- Racing Power Company®Super Flow Top Washable Open Screen Air FilterSuper Flow Top Washable Open Screen Air Filter by Racing Power Company®. Make your engine function at its full efficiency by choosing from our comprehensive selection of top-grade performance air intake parts. Crafted by the...Engineered to help upgrade your vehicle’s power and overall performanceManufactured from high-grade materials for long-lasting service in various conditions$31.02
- Flowmaster®Delta Force™ Cross-linked Polyethylene Black Cold Air Intake System with Oiled Red FilterDelta Force™ Cross-linked Polyethylene Black Cold Air Intake System with Oiled Filter by Flowmaster®. Take the performance of your vehicle to the next level with the addition of Flowmaster's new Delta Force® Cold Air Intake system....Serviceable Lifetime High-Flow 8 Layer Cotton Gauze FilterNumerous Pre-set Cut Guides$450.95
- aFe®Magnum Flow® Pro 10R Oval Straight Blue Air FilterMagnum Flow® Pro 10R Oval Straight Blue Air Filter by aFe®. The Momentum HD is designed around a massive 1,000cfm performance 360 degree radial flow air filter with 10 layers of progressive cotton media producing 99.47% cumulative...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$108.00 - $127.00
- aFe®Magnum Flow® Pro 5R Oval Straight Blue Air FilterMagnum Flow® Pro 5R Oval Straight Blue Air Filter by aFe®. This high flow Pro 5R air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. Five layers of...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$84.00 - $114.00
- aFe®Magnum Flow® Pro 5R Rectangular Tapered Blue Air FilterMagnum Flow® Pro 5R Rectangular Tapered Blue Air Filter by aFe®. These high flow Pro 5R air filters are constructed with 100% polyurethane on all sides and will out flow the stock paper filters for improved performance. Five layers of...Improves airflow for better performance and accelerationPre-oiled, washable/reusable air filter for long service life with life-time warranty$103.00 - $140.00
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