Description:
The Autolite 4123 Copper Spark Plug is engineered to provide dependable ignition performance, quick engine starts, and consistent power output. Its copper core center electrode promotes excellent heat transfer, helping maintain optimal operating temperatures while improving resistance to fouling.
High nickel alloy center and ground electrodes enhance durability and extend the spark plug’s service life while ensuring reliable spark delivery. The high alumina multi-rib ceramic insulator improves electrical insulation and heat dissipation, supporting stable operation in demanding engine conditions. A corrosion-resistant nickel-plated shell further protects the spark plug from rust and wear for long-lasting performance.
Autolite copper spark plugs are designed to meet the performance needs of many gasoline engines, making them a trusted replacement option for routine maintenance and reliable engine operation.
Features:
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Copper core center electrode improves heat transfer and fouling resistance
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High nickel alloy center and ground electrodes help extend spark plug life
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Multi-rib ceramic insulator improves electrical insulation and durability
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Nickel-plated shell helps resist corrosion and increase longevity
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Designed for quick starts and consistent ignition performance
Product Specifications:
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Part number: 4123
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Brand: Autolite
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Product type: Copper spark plug
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Center electrode core material: Copper
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Center electrode tip material: Nickel
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Ground electrode core material: Nickel
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Ground electrode tip material: Nickel
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Ground electrode configuration: Single
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Ground electrode quantity: 1
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Thread diameter: 14 mm
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Thread size: M14 × 1.25
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Seat type: Flat
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Washer type: Flat washer
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Washer included: Yes
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Hex size: 13/16 in
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Resistor type: Yes
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Resistance: 5000 ohms
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Pre-gap size: 0.7 mm
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Manufacturer heat range: 11
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Insulator material: Ceramic
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Center electrode design: Standard
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Center electrode projection: Mid projection
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Electrical terminal type: Removable nut
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Skirt: Yes