Spark plug · NGK
Equivalents for the NGK spark plug 4120
NGK 4120 is a spark plug. Browse its 141 equivalents: compatible, interchangeable and replacement spark plugs across NGK, Bosch, Champion, Denso and many more.
Buy this spark plug NGK 4120 — best retailers
Partner links: a purchase made through these links may earn us a commission, at no extra cost to you.
What can replace a NGK 4120 spark plug?
The NGK 4120 is interchangeable with: NGK BKR5E11, Bosch FR 8 D+X, Champion RC12YC/101, NGK BCP5ES11, NGK BCPR5E11, NGK BKR5E-11. These spark plugs share the same mounting (thread, seat) and heat range.
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.