Spark plug Naraku 14-R9-LS (BR9ES)

Description

The life of a plug is determined by fuel type, engine condition, hours of operation and engine temperature. In 4-stroke engines from 250ccm, the candles should be cleaned or replaced after 6000km. With less displacement, especially 2-stroke, approx. every 2500km.
OEM numbers for comparison purposes:
NGK: BR9ESBosch: WR 3 CC / 0 242 255 502 Champion: OE 091 / QN 2 / QN 2 C / RN 2 / RN 2 C Denso: W 27 ESR / W 27 ESRU

14 = B thread diameter 14mm
R = R (resistor) resistance candle 5kOhm
9 = 9 calorific value
L = E (Long) long spark plug thread
S=S standard