aFe Silver Bullet Throttle Body Spacers TBS BMW 5 Series (E60) 06-10 V8-4.8L 1984-plymouth-colt-dl-esi1947571 With 2-way adjustability in the

With 2-way adjustability in the front and 3-way in the rear

ACL Chevrolet V8 265-327-350-400 1964-98 Cam Bearings

Natural mill finish

Full size ports ORB-08 ports at each end for optimal injector supply and minimal hydraulic fluctuation

aFe Silver Bullet Throttle Body Spacers TBS BMW 5 Series (E60) 06-10 V8-4.8L 1984-plymouth-colt-dl-esi1947571 With 2-way adjustability in theSilver 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.