Spark plug 10-R7-SSA (CR7HSA)

Description

Life of a candle is determined by the type of fuel, the condition of the engine, the operating times and the engine temperature. With 4-stroke engines from 250ccm, the candles should be cleaned or replaced after 6000km. With less cubic capacity, especially 2-stroke, approx. Every 2500km. After this mileage, carbon deposits lead to starting difficulties and a loss of power due to the spark plug. Increased short-distance operation and poor engine oil quality can shorten the intervals.
OEM numbers for comparison purposes:
NGK: CR7HSA Bosch: UR 3 AC / 0 242 055 501 Champion: PRZ 9 HC / RZ 96 C Denso: U 22 FSRU

10 = C thread diameter 10mm
R = R (resistor) resistance candle 5kOhm
7 = 7 calorific value
S = H (Short) short spark plug thread
S=S standard
A = A without connection nut (can be unscrewed)