Autolite Copper Core Spark Plugs

4.78 out of 5 stars 175 Customer Reviews

Autolite copper core spark plugs feature a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together. This ensures full voltage at the spark gap and a 100 percent leak-proof, gas-tight seal. Autolite features an extensive application guide to cover just about everything with an internal combustion engine. Keep your engine running smoothly and reliably with Autolite replacement copper core spark plugs.

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Autolite Copper Core Spark Plugs 3923

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: ATL-3923

4.42 out of 5 stars ( 12 )

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Autolite Copper Core Spark Plugs 26

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Tapered Seat, 0.431 in, Reach, Each

Part Number: ATL-26

5.0 out of 5 stars ( 13 )

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Autolite Copper Core Spark Plugs 85

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.375 in, Reach, Each

Part Number: ATL-85

5.0 out of 5 stars ( 5 )

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Autolite Copper Core Spark Plugs 65

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.750 in, Reach, Each

Part Number: ATL-65

5.0 out of 5 stars ( 5 )

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Autolite Copper Core Spark Plugs 86

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Tapered Seat, 0.372 in, Reach, Each

Part Number: ATL-86

4.8 out of 5 stars ( 10 )

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Autolite Copper Core Spark Plugs 216

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .437 in. Reach, Non-Projected Tip, Non-Resistor, Each

Part Number: ATL-216

5.0 out of 5 stars ( 5 )

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Autolite Copper Core Spark Plugs 66

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.750 in, Reach, Each

Part Number: ATL-66

5.0 out of 5 stars ( 3 )

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Autolite Copper Core Spark Plugs 3076

Spark Plug, Copper Core, Gasket Seat, 7/8-18 in. Thread, 0.625 in. Reach, Each

Part Number: ATL-3076

5.0 out of 5 stars ( 2 )

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Autolite Copper Core Spark Plugs 985

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.750 in, Reach, Each

Part Number: ATL-985

4.0 out of 5 stars ( 4 )

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Autolite Copper Core Spark Plugs 5224

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: ATL-5224

4.89 out of 5 stars ( 9 )

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Autolite Copper Core Spark Plugs 63

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.750 in, Reach, Each

Part Number: ATL-63

5.0 out of 5 stars ( 1 )

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Autolite Copper Core Spark Plugs 295

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, .375 in. Reach, Partial Projected Tip, Non-Resistor, Each

Part Number: ATL-295

5.0 out of 5 stars ( 1 )

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Autolite Copper Core Spark Plugs A4164

Spark Plug, Copper Core, Gasket Seat, 12mm Thread, .750 in. Reach, Partial Projected, Resistor, Each

Part Number: ATL-4164

Not Yet Reviewed

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Autolite Copper Core Spark Plugs 64

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.750 in, Reach, Each

Part Number: ATL-64

4.0 out of 5 stars ( 1 )

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Autolite Copper Core Spark Plugs 5325

Spark Plug, Copper, 14mm Thread, 1.000 in. Reach, Flat Seat, 16mm Wrench Size, Each

Part Number: ATL-5325

Not Yet Reviewed

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Autolite Copper Core Spark Plugs 306

Spark Plug, Copper Core, Resistor, 14mm x 1.25, Gasket Seat, 0.372 in, Reach, Each

Part Number: ATL-306

4.5 out of 5 stars ( 2 )

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