aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L 29112BK Simpson offers 3 types of

Simpson offers 3 types of restraint mounting hardware

Sportsman Deluxe

1985-1995 Pontiac Grand Am

Valves work with Allstar Performance center reliefs and other popular plastic or aluminum quick disconnect fittings

aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L 29112BK Simpson offers 3 types ofSilver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T 6061 billet aluminum and using a unique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.