Up for sale is a used Civic Si engine. It has been leakdown tested and compression tested. It is ready to install. This part was removed off a 2014 Honda Civic Si Sedan Manual Transmission with 122k miles. 2.4L 2354CC l4 GAS DOHC Naturally Aspirated. Fitment Type: Direct Replacement. Our goal is to provide a hassle-free shopping experience to our customers. Powered by SixBit’s eCommerce Solution.