Yamaha
Official Spark Plug of Mazda Raceway Laguna Seca
Bosch celebrates its 27th consecutive
year as the Official Spark Plug of Mazda Raceway, where they will once
again showcase their technically-advanced products. The leading
worldwide manufacturer of automotive components has consistently
supported motorsports since the advent of the sport at the turn of the
century. Today, more races are won on Bosch than any other spark plug.