Description:
The Autolite 437 Copper Spark Plug is designed to deliver reliable ignition performance, quick engine starts, and consistent power output. Its copper core center electrode promotes excellent heat transfer, helping maintain proper operating temperatures while improving resistance to fouling.
High nickel alloy center and ground electrodes provide extended durability and reliable spark delivery. The multi-rib high alumina ceramic insulator enhances electrical insulation and heat dissipation, helping ensure stable performance under demanding conditions. A corrosion-resistant nickel-plated shell protects the spark plug from rust and wear for long-lasting reliability.
Autolite copper spark plugs are engineered to meet the performance needs of many gasoline engines, making them a dependable replacement option for routine maintenance.
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 improve longevity
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Designed for quick starts and consistent ignition performance
Product Specifications:
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Part number: 437
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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: No
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Resistance: 1 ohm
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Manufacturer heat range: 5
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Insulator material: Ceramic
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Insulator height: 2.264 in
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Center electrode design: Standard
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Center electrode projection: Mid projection
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Electrical terminal type: Non-removable nut
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Skirt: Yes