Description:
The Autolite 255 Copper Spark Plug is designed to provide dependable ignition performance, quick engine starts, and consistent power. Built with a copper core center electrode, this spark plug offers excellent thermal conductivity, helping maintain proper operating temperatures and reduce the risk of fouling.
High nickel alloy center and ground electrodes help extend spark plug life while maintaining reliable spark delivery. The multi-rib high alumina ceramic insulator improves electrical insulation and heat dissipation for enhanced durability and stable performance. A corrosion-resistant nickel-plated shell protects against rust and wear, helping ensure long-term reliability.
Autolite copper spark plugs are engineered to deliver reliable performance for many gasoline engines, making them a trusted replacement choice for routine maintenance and engine performance.
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 extend service life
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Designed for quick starts and dependable ignition performance
Product Specifications:
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Part number: 255
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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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Reach: 9 mm
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Hex size: 3/4 in
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Resistor type: No
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Resistance: 1 ohm
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Pre-gap size: 0.8 mm
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Manufacturer heat range: 8
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Insulator material: Ceramic
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Insulator height: 40 mm
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Center electrode design: Standard
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Center electrode projection: Short projection
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Electrical terminal type: Non-removable nut
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Skirt: Yes