aFe Silver Bullet Throttle Body Spacers TBS Toyota Tundra 05-09 V8-4.7L Bushing Kits ✓ Weatherproof relay and fuse

✓ Weatherproof relay and fuse holder for reliability

2001-2007 Subaru WRX

Year Make Model Submodel 2018 Subaru WRX STI Base 2018 Subaru WRX STI Limited 2018 Subaru WRX STI Type RA

Ground clearance figure is based on stock suspension

Flow and Performance: This Mach Force-Xp Series exhaust system is constructed of 2-1/2" and 3" mandrel bent 409 stainless steel for maximum flow and low turbulence increasing torque

aFe Silver Bullet Throttle Body Spacers TBS Toyota Tundra 05-09 V8-4.7L Bushing Kits ✓ Weatherproof relay and fuseSilver 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.