Description
Enhance your Honda Civic Si’s engine performance with the K&N Engineering Performance Intake Kit, part number 57-3512. Crafted from high-density polyethylene (HDPE) through a durable rotational molding process, this cold air intake system is designed to increase airflow to your engine, resulting in a guaranteed boost in horsepower and torque. The system features a custom heat shield that effectively shields intake air from the high temperatures within your engine bay, ensuring optimal air intake conditions for improved engine efficiency. The oversized, conical high-flow air filter with oiled cotton media is washable and reusable, capable of lasting up to 100,000 miles under normal highway driving conditions without requiring replacement or extensive maintenance. Installation is straightforward, typically taking less than 90 minutes, making it an accessible upgrade for DIY enthusiasts and professional mechanics alike. The entire system is confirmed to be EPA compliant and is protected by K&N’s No-Hassle Lifetime Limited Warranty, offering peace of mind and long-term reliability. Please verify CARB status for your specific vehicle, as some intakes may not be legal for sale or use on pollution-controlled vehicles in California. This performance intake kit is designed to improve airflow, optimize engine response, and unlock additional power, making it a valuable upgrade for your Honda Civic Si.
Features:
- High-density polyethylene (HDPE) construction: ensures durability and long-lasting performance
- Rotational molding process: provides a precise fit and enhanced strength
- Custom heat shield: protects intake air from high engine bay temperatures
- Oversized conical high-flow filter: allows for up to 100,000 miles of service under normal highway conditions
- Washable and reusable filter: reduces maintenance costs and environmental impact
- Easy installation: typically completed in less than 90 minutes
- EPA compliant: meets environmental standards for emissions
- K&N No-Hassle Lifetime Limited Warranty: guarantees product longevity and quality
Fitment:
Honda Civic CX 1999
Honda Civic CX 2000
Honda Civic DX 1999
Honda Civic DX 2000
Honda Civic EX 1999
Honda Civic EX 2000
Honda Civic GX 1999
Honda Civic GX 2000
Honda Civic HX 1999
Honda Civic HX 2000
Honda Civic LX 1999
Honda Civic LX 2000
Honda Civic Si 1999
Honda Civic Si 2000
Honda Civic Value Package 1999


















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