Equivalents for the ACDelco spark plug 21
ACDelco 21, a spark plug : reach 26.5 mm, thread 14 mm, heat range hot, tightening torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour). Browse its 17 equivalents: compatible, interchangeable and replacement spark plugs across NGK, Bosch, Champion, Denso and many more.
Technical information ACDelco 21 spark plug
- Resistor
- yes
- Torque
- fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)
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17 equivalents compatible with the ACDelco 21 spark plug
No equivalent for this brand selection.
What can replace a ACDelco 21 spark plug?
The ACDelco 21 is interchangeable with: Champion REC8WYPB4, Denso K20HRU11, Saab 12788884, Denso SK20HR11, Champion 9033, GMC 55564748. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the ACDelco 21?
Thread 14 mm, Reach 26.5 mm, Heat range Hot, Resistor yes, Seat Flat (gasket), 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.