Radium Engineering Mazda 13B-REW ACV Block Off

The Radium Engineering Mazda 13B-REW ACV Block Off blocks the named air-control or emissions-system port for competition or off-road configurations where that modification is legal and appropriate. It provides a purpose-made solution in place of improvised block-off hardware and should be used only where emissions-system changes are permitted.

Verify emissions legality before purchase or installation; EGR modifications may not be street legal in all jurisdictions.