Description
Autolite 2543 Copper Core Resistor Spark Plug
- Copper Core Electrode: Enhances thermal conductivity and resists fouling
- Projected Power Tip: Extends into the combustion chamber for better self-cleaning and reduced pre-ignition
- Multi-Rib Ceramic Insulator: Prevents flash-over and improves dielectric strength
- Cold-Formed Steel Shell: Precision-rolled threads for durability
- Copper-Glass Seal: Leak-proof design ensures full voltage at the spark gap
- Reliable Starts & Fuel Efficiency: Engineered for consistent ignition and smooth acceleration
Key Features
- Thread Size: 14mm x 1.25
- Reach: 18mm (0.709 in)
- Seat Type: Tapered
- Hex Size: 5/8 in (16 mm)
- Terminal Type: Solid
- Center Electrode: Nickel, 2.5mm projected tip
- Ground Electrode: Nickel, standard type
- Resistor: Yes (~4000–5000 Ohms)
- Shell: Extended metal shell, nickel-plated
- Torque Spec: 7–15 lb-ft (cast iron or aluminum)
- Warranty: 2-Year Limited Warranty
- Longevity: Up to 30,000 miles
Refer to original manufacturer for any applicable warranties.
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