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Champion Copper Plus Spark Plugs

4.82 out of 5 stars 178 Customer Reviews

Champion Copper Plus spark plugs have been original equipment on a wide variety of engines for many years. They feature nickel alloy centers and ground electrodes with efficient wear characteristics. In addition, the spark plugs' extrusion of copper into the center electrode allows for increased conductivity and heat control. Manufacturers have used them in non-automotive applications, such as lawn and garden and other power equipment. Replace your old plugs with Champion Copper Plus spark plugs for maximum reliability.

Results 1 - 25 of 97

Spark Plug, Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.750 in. Reach, Gasket Seat, Set of 24

Part Number: CPN-71S

5.0 out of 5 stars ( 1 )

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Spark Plug, RC9YC, Copper Plus, Flat Seat, 14mm Thread, .750 in. Reach, Projected Tip, Non-Resistor, Each

Part Number: CPN-344

5.0 out of 5 stars ( 6 )

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Spark Plug, RV12YC, Copper Plus, Tapered Seat, 14mm Thread, .460 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-406

4.67 out of 5 stars ( 3 )

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Spark Plug, RC14YC, Copper Plus, Flat Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Set of 24

Part Number: CPN-431S

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Spark Plug, RS12YC, Copper Plus, Tapered Seat, 14mm Thread, .708 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-401

4.5 out of 5 stars ( 4 )

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Spark Plug, 3X, Copper Plus, Gasket Seat, 7/8-18 Thread, .813 in. Reach, Non-Resistor, Each

Part Number: CPN-429

5.0 out of 5 stars ( 1 )

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Spark Plug, J12YC, Copper Plus, Gasket Seat, 14mm Thread, .380 in. Reach, Non-Resistor, Each,

Part Number: CPN-10

4.0 out of 5 stars ( 5 )

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Spark Plug, RC9YC4, Copper Plus, Flat Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-430

5.0 out of 5 stars ( 1 )

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Spark Plug, Copper Plus, Gasket Seat, 14mm Thread, .551 in. Reach, Each

Part Number: CPN-431-1

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Spark Plug, Copper Plus, Gasket Seat, Nickel Alloy, 14mm Thread, 0.438 in. Reach, Each

Part Number: CPN-844

5.0 out of 5 stars ( 2 )

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Spark Plug, RC14YC, Copper Plus, Flat Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-431

4.67 out of 5 stars ( 3 )

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Spark Plug, RFN14LY, Copper Plus, Gasket Seat, 14mm Thread, .750 in. Reach, Resistor, Each

Part Number: CPN-82

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Spark Plug, RC7YC, Copper Plus, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Non-Resistor, Each

Part Number: CPN-340

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Spark Plug, RS14YC, Copper Plus, Tapered Seat, 14mm Thread, .708 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-408

5.0 out of 5 stars ( 3 )

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Spark Plug, Copper Plus, Nickel Copper Alloy, 14mm Thread, 0.375 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each

Part Number: CPN-871

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Spark Plug, Copper Plus, 14mm, Gasket Seat, .375 in. Reach, Projected Tip, Resistor, RJ12C, Each

Part Number: CPN-592

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Spark Plug, RC10YC4, Copper Plus, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-346

Not Yet Reviewed

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

Spark Plug, Tapered Seat, 1/2 in. NPT Thread, 15/16 in. Hex, 0.940 in. Reach, Non-Resistor, Each

Part Number: CPN-425

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

Spark Plug, RS14LC, Copper Plus, Tapered Seat, 14mm Thread, .708 in. Reach, Resistor, Each

Part Number: CPN-407

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

Spark Plug, Non-Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.500 in. Reach, Gasket Seat, Each

Part Number: CPN-831

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Spark Plug, Copper Plus, Nickel Copper Alloy, 14mm Thread, 0.500 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each

Part Number: CPN-898

Not Yet Reviewed

Estimated Ship Date: Dec 5, 2025 if ordered today

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Estimated Ship Date: Dec 5, 2025 if ordered today

Spark Plug, Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.689 in. Reach, Tapered Seat, Set of 24

Part Number: CPN-401S

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

Spark Plug, Copper Plus, Copper, 14mm Thread, 0.441 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Set of 24

Part Number: CPN-406S

Not Yet Reviewed

Estimated Ship Date: Dec 4, 2025 if ordered today

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Estimated Ship Date: Dec 4, 2025 if ordered today

Spark Plug, Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.375 in. Reach, Gasket Seat, Each

Part Number: CPN-592-1

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

Spark Plug, Resistor, Nickel Tip, Copper Core, 14mm Thread Size, 0.750 in. Reach, Gasket Seat, Each

Part Number: CPN-946-1

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

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