Motorcraft SP-520 Spark Plug

Specs, cross-brand equivalents, vehicle fitment, and live prices for the Motorcraft SP-520.

The Motorcraft SP-520 is a 14mm thread, 19mm reach, gasket seat, iridium electrode spark plug, pre-gapped to 0.044". These specifications are decoded from the Motorcraft part number and determine which plugs it safely cross-references to — a valid equivalent must match the thread, reach, seat and heat range.

Vehicles the SP-520 fits

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