The Optimized 72mm Throttle Body has been successfully tested on boosted and normally aspirated 3.0L Mazda V6 engines. A conversion to this larger throttle body provides maximum potential intake benefits at a lower cost than a standard 3.0L throttle body.
Parts Needed:
  • A fully optimized 72mm Mazda6 throttle body. (Used on the 3.7L engine.)
  • A 3.25" to 3.0" 45° reducing coupler* for attaching to all typical CAI tubes.
  • A tapered 1/2" TB spacer for proper fit and flow into the 64mm 3.0L manifold opening.
  • 4 Extended bolts and washers for attaching the new throttle body with the 1/2" spacer.
  • A heavy duty gasket for the throttle body spacer.
  • A Coolant hose bypass coupling with hose clamps.

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* Silicone couplers sourced via special arrangment with Silicon Intake Systems, Inc. Please visit the www.siliconeintakes.com website for a full selection of other silicone intake coupling products.