06-11 Honda Civic Si Thermal Throttle Body Spacer Engine Rebuild Kits Test fit before committing to

Test fit before committing to permanent mounting

while the modular plenum design allows users to increase plenum volume using optional spacers for additional tuning capability

and eliminates knocks and pings that rob power

and tighten in a star pattern per your vehicle's service manual torque spec

06-11 Honda Civic Si Thermal Throttle Body Spacer Engine Rebuild Kits Test fit before committing toIncrease horsepower and torque with our 3 4 inch throttle body spacer. Dyno test on a 2006 Honda Civic Si delivered an impressive 4. 5 horsepower gain at the wheels. Made from 6061 Aluminum and machined in house in the USA, this spacer is built for performance and reliability. Includes: Two thermal gaskets for heat insulation Extended stainless steel Allen bolts Anodized finish for a clean, show quality look Optional Feature: Need more flexibility? A