Equivalents for the Bosch spark plug 9621
Meet the Bosch 9621 spark plug. Find its 52 compatible and interchangeable spark plugs: cross-references for NGK, Bosch, Champion, Denso and every brand.
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52 equivalents compatible with the Bosch 9621 spark plug
No equivalent for this brand selection.
What can replace a Bosch 9621 spark plug?
The Bosch 9621 is interchangeable with: NGK ILKAR7B11, Bosch VR 7 MII33U, Champion OE253, NGK ILKAR7C10, NGK ILKAR7C11, NGK ILKAR7L11. 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.