SKU: NGK-BUR7EQ Categories: , Tag:


NGK-BUR7EQ Is the factory plug for the Leading spark plug in many rotary engines such as the FC and FD 13b turbo. It is also a great cost effective alternative for the Mazda RX8 13B engine. However, in a slightly modified engine, we recommend using BUR9EQ or BUR9EQP in both leading and trailing. If highly modified, we recommend BR10EG or R6725-115 for racing applications