NGK 3901A Spark Plug
Standard delivery
Free standard delivery is available for eligible UK mainland orders. Charges may apply for express services and non-mainland destinations. See our delivery information for details.
The NGK 3901A Spark Plug is a replacement engine ignition or starting-aid component that supports controlled combustion by providing the specified spark or pre-heating function. Its catalogue specification records 16 mm spanner size, M10 x 1,0 thread size, 19 mm thread length, and Connector Type M4, Nickel Middle Electrode, and 1 - Earthed Electrode spark plug. Confirm the reference, electrical rating, thread or connector details and engine application before fitting; use the specified installation torque and test procedure.
- Vendor NGK
- SKU 3901A
- HONDA : 31917-KPH-901
- YAMAHA : 94700-00420 94701-00420 94703-00420
- KAWASAKI : 9207 00022 E 9207 00022
- NGK : CPR7EA-9