aFe Silver Bullet Throttle Body Spacers TBS Ford Ranger/Explorer SporTrac 01-09 V6-4.0L 2021-jeep-wrangler-unlimited-high-altitude-esi1400624 5" diameter Axle-Back system features

5" diameter Axle-Back system features the mellow Touring sound level and single 3

Supports up to 1

ACL AMC Jeep 6 232-241-258 1964-90 Engine Crankshaft Main Bearing Set

Eibach Pro-Kit performance suspension spring with progressive characteristics

aFe Silver Bullet Throttle Body Spacers TBS Ford Ranger/Explorer SporTrac 01-09 V6-4.0L 2021-jeep-wrangler-unlimited-high-altitude-esi1400624 5" diameter Axle-Back system featuresSilver 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.