Bosch WR9C Spark Plug

Specs, cross-brand equivalents, vehicle fitment, and live prices for the Bosch WR9C.

The Bosch WR9C is a heat range 9, copper electrode spark plug. These specifications are decoded from the Bosch part number and determine which plugs it safely cross-references to — a valid equivalent must match the thread, reach, seat and heat range.

Cross-reference equivalents

Showing the 40 closest cross-references of 54 total interchangeable part numbers for this plug.

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