Equivalents for the Prestolite spark plug 18S3
Meet the Prestolite 18S3 spark plug with tightening torque cast iron 35–45 N·m · aluminium 35–40 N·m — or 180°–240° (½–⅔ turn), thread 18 mm, heat range very hot. 185 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information Prestolite 18S3 spark plug
- Resistor
- no
- Torque
- cast iron 35–45 N·m · aluminium 35–40 N·m — or 180°–240° (½–⅔ turn)
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What can replace a Prestolite 18S3 spark plug?
The Prestolite 18S3 is interchangeable with: Bosch M5A, Champion D6, Denso M17, Bosch M8A, Bosch M4A2, Bosch M4AC. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Prestolite 18S3?
Thread 18 mm, Heat range Very hot, Gap 0.45mm, Resistor no, Seat Flat (gasket), Torque cast iron 35–45 N·m · aluminium 35–40 N·m — or 180°–240° (½–⅔ turn)
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.