The Injen SP1581WR Cold Air Intake System is engineered specifically for the 2017-2018 Honda Civic Si L4-1.5L Turbo, offering significant enhancements to your engine's airflow and performance. This intake system is a direct fit for the specified models, ensuring a seamless installation without any modifications.
Constructed from high-quality 6061-T6 aluminum, the intake tube provides a smooth, uninterrupted airflow path, which is crucial for maximizing engine efficiency. The two-piece design allows for easy conversion to a short ram system, offering flexibility depending on your performance needs. With dyno-proven gains of up to 29 horsepower and 25 lb-ft of torque, this intake system not only boosts power but also maintains optimal air-fuel ratios throughout the power band, eliminating the need for additional tuning.
The SP1581WR incorporates Injen's patented technologies, including:
These innovations ensure that your engine breathes freely, delivering an aggressive tone under full throttle that is sure to impress.
This intake system features a fully serviceable Injen SuperNano-Web dry air filter, which offers increased surface area for superior airflow and filtration efficiency. The replacement air filter part number is x-1062-BB, and for those looking to enhance protection, an optional hydroshield (part number 1031BLK) is also available.
The SP1581WR is available in multiple finishes, allowing you to customize the look of your engine bay. As a testament to its quality, this product comes with the Injen Technology Limited Lifetime Warranty, ensuring long-lasting performance and peace of mind.
Other Part Numbers:
Injen #injSP1581WR
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2017-2020 Honda Civic |
Civic | 2017-2020 |
Injen is highly recognized in the automotive industry. The company started in 1991 and specializes in manufacturing high-quality air induction products. The company has become the go-to brand by multiple import tuners and has since become an automotive icon in the industry.
Years of ExperienceFor more than three decades, the company has created dozens of patents and thousands of new products. All of their products are dyno-tested to ensure that it provides optimum performance to the vehicle it is applied to.
Injen offers a variety of products ranging from intake systems, intercoolers, exhaust systems, and other performance parts. All their products are made out of high-quality materials and are designed by the industry’s top designers and engineers. This enables them to create products that are not only functional but adds an aesthetic value to the vehicle. Even up to now, the company never stops in improving its product. Hence, they are a favorite of tuners who wanted to have the best.
Purchase Injen Products at Vivid RacingIf you are looking for products that provide performance gains and are tried and tested, then Injen is the brand for you. They have been used by thousands of enthusiasts worldwide and have provided them high-performance products they truly deserve. The company has one of the most comprehensive lists of products that applies to most vehicles available in the market. You can never go wrong with Injen.
Visit Vivid Racing and check out their list of products that would fit your specific needs.

Injen Technology offers a Limited Lifetime Warranty to the original purchaser against defects in material and workmanship on all intake systems excluding the filter element. Injen Technology will replace at no charge, any intake pipe considered by Injen Technology to be defective. The warranty is void if the warranty card is not returned to Injen Technology within the first 30 days of purchase. Any and all warranty coverage is limited to the repair or replacement of the defective part only, at Injen Technology.s discretion. Proof of purchase is required. The warranty does not cover incidental or consequential damages, nor does it cover the cost of installation or removal of the defective part or its replacement.
EXHAUST WARRANTY
Injen Technology offers a one-year warranty to the original purchaser against defects in material and workmanship on all exhaust systems. Injen Technology will replace at no charge, any exhaust system considered by Injen Technology to be defective. Any and all warranty coverage is limited to the repair or replacement of the defective part only, at Injen Technology's discretion. Proof of purchase is required. The warranty does not cover incidental or consequential damages, nor does it cover the cost of installation or removal of the defective part or its replacement.
AIR INTAKES AND ACCESSORIES
Injen Technology offers a Limited Lifetime Warranty to the original purchaser against defects in material and workmanship on all intake systems excluding the filter element. Injen Technology will replace at no charge, any intake pipe considered by Injen Technology to be defective. The warranty is void if the warranty card is not returned to Injen Technology within the first 30 days of purchase. Any and all warranty coverage is limited to the repair or replacement of the defective part only, at Injen Technology's discretion. Proof of purchase is required. The warranty does not cover incidental or consequential damages, nor does it cover the cost of installation or removal of the defective part or its replacement. All warranty items must be sent freight prepaid with a valid RMA (Return Merchandise Authorization) number and copy of original invoice.
SES INTERCOOLERS AND EXHAUST SYSTEMS
Injen Technology offers a one-year warranty to the original purchaser against defects in material and workmanship on all exhaust systems. SES Intercooler and exhaust systems that have been installed will not be eligible for return under any circumstances. Defective parts will be replaced or repaired as deemed necessary by Injen Technology. All other warranty issues will apply as indicated under the Air Intake section. Most exhaust and Intercooler system installations may require a lift and or specialized tools. Due to the installation complexity of automotive exhaust and Intercooler systems, Injen Technology recommends that a qualified technician perform the installation. Most local Tuner or exhaust and muffler shops offer professional installation.