HKS designed a perfect spark plug for all types of engine.
HKS: Spark Plug Iridium (Mazda rotary)
Brand: HKS
Part Number: 50003-M50RE
Stock images used. Actual product may vary.
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Mazda RX-7 FD3S Type III 13B-REW (09/1994-01/1996)
Mazda RX-7 FD3S Type IV 13B-REW (01/1996-12/1998)
Mazda RX-7 FD3S Type V 13B-REW (01/1999-09/2000)
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