PRL Motorsports Short Ram Air Intake System 2017-2021 Honda Civic Si 1.5T

Overview The PRL Motorsports Short Ram Air Intake System for the 2017–2021 Civic Si delivers unrestricted induction sound and increased airflow through a 4.0" oiled cone filter and precision CNC billet MAF housing specifically calibrated for the Si's L15B7 engine. The system incorporates a laser-cut aluminum heat shield and 4-ply silicone couplers that smooth airflow directly into the turbo inlet. Available with Standard Bore (no tune required) or Big Bore MAF housing (custom calibration required). Features 4.0" reusable oiled cone air filter Billet 6061-T6 aluminum MAF housing 4-ply reinforced silicone inlet hose Laser-cut aluminum heat shield Choice of Standard Bore (tune-free) or Big Bore MAF profile What's Included (1) 4" reusable cone air filter (1) Billet aluminum MAF housing (1) 4-ply silicone intake hose (1) Heat shield assembly & mounting bracket Stainless steel hardware and hose clamps Fitment 2017–2021 Honda Civic Si 1.5T (Coupe & Sedan) Compatible with 6MT models (including RHD and international variants) Installation Notes Standard Bore: No ECU calibration required Big Bore: Custom ECU calibration required Installation guide (PDF): Download