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Upgrade your 2018-2021 Subaru WRX STI with the Injen Technology SP1208WR Cold Air Intake, designed specifically for H4-2.5L turbocharged engines. This short ram air intake system replaces the factory airbox with an engineered solution that enhances airflow, allowing your turbocharger to breathe more deeply and produce its full power potential. Its design not only boosts horsepower and torque but also maintains optimal air-fuel ratios, providing a significant performance increase without the need for additional tuning. The system is straightforward to install, making it accessible for enthusiasts seeking a quick upgrade that delivers immediate results. The high-quality, large 3.25-inch mandrel-bent 6061-T6 aluminum tubing ensures smooth airflow, reducing restrictions and improving throttle response. Included with the intake is a fully serviceable Injen SuperNano-Web dry air filter, which offers durability and easy maintenance for continued performance. The system features Injen’s patented MegaRam (MR) Technology, which further amplifies power gains, with dyno results showing increases of up to 26 horsepower and 24 lb-ft of torque. A custom heat shield is included, specifically designed for this application, protecting the intake from engine bay heat and ensuring consistent airflow. The Wrinkle Red finish adds a bold aesthetic appeal, and the intake's aggressive engine tone under full throttle enhances driving excitement. Built in Pomona, California, USA, Injen’s SP1208WR intake is backed by a limited lifetime warranty, promising reliability and quality. Please note that this product is not CARB exempt and is not legal for sale or use in California vehicles registered with the DMV. Optional accessories like the Hydroshield can be purchased separately to provide additional protection for the filter. This intake system is ideal for performance-focused drivers who want to maximize their Subaru WRX STI’s power output with a reliable, easy-to-install upgrade that combines performance and durability.
Features:
Fitment:
2018 Subaru WRX STI Base
2018 Subaru WRX STI Limited
2018 Subaru WRX STI Type RA
2019 Subaru WRX STI Base
2019 Subaru WRX STI Limited
2019 Subaru WRX STI S209
2020 Subaru WRX STI Base
2020 Subaru WRX STI Limited
2021 Subaru WRX STI Base
2021 Subaru WRX STI Limited
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Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
