Equivalents for the Motorcraft spark plug SP-521
Meet the Motorcraft SP-521 spark plug with heat range medium, thread 14 mm, reach 17.5 mm, tightening torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour). 77 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information Motorcraft SP-521 spark plug
- Torque
- fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)
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77 equivalents compatible with the Motorcraft SP-521 spark plug
No equivalent for this brand selection.
What can replace a Motorcraft SP-521 spark plug?
The Motorcraft SP-521 is interchangeable with: NGK TR5IX, Bosch HR6DP, Champion RS12WYPB4, Bosch HR7DII33V, Bosch HR7DPP30V, Bosch HR8DPP15V. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Motorcraft SP-521?
Thread 14 mm, Reach 17.5 mm, Heat range Medium, Torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.