Equivalents for the ACDelco spark plug R 5603
ACDelco R 5603 is a spark plug. All its 38 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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38 equivalents compatible with the ACDelco R 5603 spark plug
No equivalent for this brand selection.
What can replace a ACDelco R 5603 spark plug?
The ACDelco R 5603 is interchangeable with: NGK BKR 6 EY-11, Bosch FR 7 DC, Champion RC 7 YC4, NGK V-Line Nr. 35, Bosch FR 7 DCX, Champion RC 8 YCL. 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.