Looking for aftermarket parts to modify or upgrade your 2003 Honda Civic with throttle bodies? At Tunersports.com we carry a huge selection of the top name brand performance throttle body parts and accessories for your Civic.
Whether you have a 2003 Honda Civic in Si trim we have you covered. We have 5 throttle bodies available to mod your Civic. All parts have free shipping to the Continental US 48 States.
 IN STOCK BXIM-10300-62.5K2B Throttle Body Adapter
BLOX Racing offers a great performance solution for K-series enthusiasts: the K2B throttle body adapter. This adapter allows users to install almost any B/D/H throttle body on to a RBC or RBC-style intake manifold. Now tuners and builders can reap the performance gains by i... BLOX Racing Honda K-Series 62.5mm Bore Throttle Body Adapter for RBC Manifold 2002-2011 Honda Civic Si $52.80 SALE |
 IN STOCK - DROPSHIPS BXIM-10300-70K2B Throttle Body Adapter
BLOX Racing offers a great performance solution for K-series enthusiasts: the K2B throttle body adapter. This adapter allows users to install almost any B/D/H throttle body on to a RBC or RBC-style intake manifold. Now tuners and builders can reap the performance gains by i... BLOX Racing Honda K-Series 70mm Bore Throttle Body Adapter for RBC Manifold 2002-2011 Honda Civic Si $58.30 |
 IN STOCK - DROPSHIPS BXIM-10302BLOX Racing Honda K2B Billet Throttle Body Adapter - Raw 2002-2011 Honda Civic Si $58.30 |
 IN STOCK - DROPSHIPS BXIM-10302-BKBLOX Racing Honda K2B Billet Throttle Body Adapter - Black 2002-2011 Honda Civic Si $58.30 |
 OUT OF STOCK BXIM-10302-SIK2B Throttle Body Adapter
BLOX Racing offers a great performance solution for K-series enthusiasts: the K2B throttle body adapter. This adapter allows users to install almost any B/D/H throttle body on to a RBC or RBC-style intake manifold. Now tuners and builders can reap the performance gains by i... BLOX Racing Honda K2B Billet Throttle Body Adapter - Silver 2002-2011 Honda Civic Si $58.30 |