Equivalents for the Champion spark plug 640
Champion 640, a spark plug — thread 18 mm, reach 12.7 mm, tightening torque cast iron 35–45 N·m · aluminium 35–40 N·m — or 180°–240° (½–⅔ turn), heat range medium. Browse its 20 equivalents: compatible, interchangeable and replacement spark plugs across NGK, Bosch, Champion, Denso and many more.
Technical information Champion 640 spark plug
- Terminal
- 8-32 UNC/BRASS
- Torque
- cast iron 35–45 N·m · aluminium 35–40 N·m — or 180°–240° (½–⅔ turn)
Buy this spark plug Champion 640 — best retailers
Partner links: a purchase made through these links may earn us a commission, at no extra cost to you.
20 equivalents compatible with the Champion 640 spark plug
No equivalent for this brand selection.
What can replace a Champion 640 spark plug?
The Champion 640 is interchangeable with: Bosch MR3BPP330, Champion RM77N, Denso GT3-1, Champion RM78P, Champion RM77N20, Champion RM77N1014. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Champion 640?
Thread 18 mm, Reach 12.7 mm, Heat range Medium, Terminal 8-32 UNC/BRASS, Torque cast iron 35–45 N·m · aluminium 35–40 N·m — or 180°–240° (½–⅔ turn)
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.