Equivalents for the ACDelco spark plug 503E
ACDelco 503E is an automotive spark plug : heat range medium, reach 15.2–19.0 mm. 172 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information ACDelco 503E spark plug
- Resistor
- no
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What can replace a ACDelco 503E spark plug?
The ACDelco 503E is interchangeable with: Bosch CH216, Champion W420, Denso G111, Bosch GLP041, Champion CH90, Champion GX79. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the ACDelco 503E?
Reach 15.2–19.0 mm, Heat range Medium, Resistor no, Seat Flat (gasket)
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.