WHAT DOES JDM MAZDA RX-7 FD 13B-REW ENGINE FOR SALE MEAN?

For every apex (corner of the triangle) around the rotor, there’s a seal that keeps the corresponding chamber airtight, and every apex seal is loaded with a flat spring to keep up connection with the housing. Apex seals and springs are envisioned to don out just after about 100,000 miles or much less, but you can find other triggers of apex seal