Idle Speed Block-Off

This allows you to remove the idle speed diaghphram from the intake manifold of 1.6L Miatas. The advantages are fewer leak points and a shorter cooling loop. With this block off installed you will be able to cap the coolant lines going to the throttle body from the water pump. Can be offered in raw aluminum or powder coated purple at no additional cost. It is sealed with RTV gasket maker, I personally used THE RIGHT STUFF® brand and have had no problems.