Equivalents for the Bosch spark plug 4021
Bosch 4021 is a spark plug : reach 18.5–21.5 mm, heat range very hot, thread 14 mm, tightening torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour). Compare its 11 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.
Technical information Bosch 4021 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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11 equivalents compatible with the Bosch 4021 spark plug
No equivalent for this brand selection.
What can replace a Bosch 4021 spark plug?
The Bosch 4021 is interchangeable with: Bosch WR9DP4, Autolite AP66, Splitfire PP006F, Bosch WR9LP4, Bosch WR9DPX4, Bosch 4120. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Bosch 4021?
Thread 14 mm, Reach 18.5–21.5 mm, Heat range Very 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.