Equivalents for the ACDelco spark plug R 7603
The ACDelco R 7603 spark plug. Browse its 18 equivalents: compatible, interchangeable and replacement spark plugs across NGK, Bosch, Champion, Denso and many more.
Buy this spark plug ACDelco R 7603 — best retailers
Partner links: a purchase made through these links may earn us a commission, at no extra cost to you.
18 equivalents compatible with the ACDelco R 7603 spark plug
No equivalent for this brand selection.
What can replace a ACDelco R 7603 spark plug?
The ACDelco R 7603 is interchangeable with: NGK BCRE527Y, Bosch FR 8 HC, Champion RC 10 YCL, Bosch FR 8 ME, Champion RC 11 LCC4, Champion OE114/T10. 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.