Amazon.com: 4 PK TORCH F7TC Spark Plug Replace for NGK BP7ES Spark Plug, for BOSCH W5DC Spark Plug, for CHAMPION N9YC N7YC N79Y Spark Plug, for DENSO W22EP-U Spark Plug, OEM :
Amazon.com: TORCH L7T Spark Plug Replaces Champion CJ7Y CJ8Y, for NGK BPM7A BPM6A, for Bosch WS5F WS6F, for Denso W20MP-U, for Brisk P15Y, for Husqvarna Poulan Craftsman Stihl Chainsaw MS461 MS382, OEM :
NGK vs Bosch Spark Plugs - YouTube
FYI: NGK-Denso-Champion-Bosch Heat Range Interchange.- trinituner.com
OEM and ODM Ultra Fine Performance Iridium Spark Plug for Cars Toyota Camry Corolla Lexus BMW Audi Volvo Saab Mitsubishi Nissan Benz Cross Ngk, Bosch Champion - China OEM China Power Spark
BoschSparkPlugs.net: What is a Spark Plugs Heat Range?
Spark Plugs for my Volvo P1800: Bosch & NGK – DR KOH