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2002
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Impreza 2.5 RS Sedan AWD F4-2.5L SOHC
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Spark Plug
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Application and ID
Spark Plug: Application and ID
SPARK PLUG
TYPE AND MANUFACTURER
Primary
RC10YC4 (CHAMPION)
Alternate 1
BKR5E-11 (NGK)
Alternate 2
BKR6E-11 (NGK)