Summit Racing SpeedCard - learn how to get 10% back up to $100

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Performance & Replacement Spark Plugs

Performance & Replacement Spark Plugs

Fire up your engine with power-packed strokes and increased combustion pressure by adding top-quality spark plugs to your racing or street machine. Whether your car...

Fire up your engine with power-packed strokes and increased combustion pressure by adding top-quality spark plugs to your racing or street machine. Whether your car is foreign or domestic, we have a massive assortment of performance and replacement spark plug options from which to choose. Select from the industry’s leading brands, including E3 Spark Plugs, NGK, Champion, Bosch, ACDelco, Fram, ACCEL, Autolite, Ford Racing, Motorcraft, and many more! With options for virtually any type of electrode core and tip material, we have the spark plugs to keep your pistons firing run after run!

Fire up your engine with power-packed strokes and increased combustion pressure by adding top-quality spark plugs to your racing or street machine. Whether your car is foreign or domestic, we have a massive assortment of performance and replacement spark plug options from which to choose. Select from the industry’s leading brands, including E3 Spark Plugs, NGK, Champion, Bosch, ACDelco, Fram, ACCEL, Autolite, Ford Racing, Motorcraft, and many more! With options for virtually any type of electrode core and tip material, we have the spark plugs to keep your pistons firing run after run!

Individual Parts

Results 1 - 25 of 76

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Gasket Seat, 14mm Thread, Each

Part Number: ADO-R44XL

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

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 ( 4 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

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

Part Number: ATL-404

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

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

Part Number: ATL-403

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Gasket Seat, 14mm Thread, Each

Part Number: ADO-R43XL

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, XS Xtreme Sport, Iridium, 14mm Thread, 0.750 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each

Part Number: ATL-XS65

Not Yet Reviewed

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, RN5C, Copper Plus, 14mm Thread, .750 in. Reach, Gasket seat, Resistor, Projected Tip, Each

Part Number: CPN-123

Not Yet Reviewed

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Copper Core, Gasket Seat, 18mm Thread, 0.500 in. Reach, Resistor, Each

Part Number: ATL-386

Not Yet Reviewed

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Conventional Resistor, Nickel Alloy Tip, Gasket Seat, 14mm Thread, Each

Part Number: ADO-R44XLS

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Professional, Platinum Tip, Gasket Seat, 14mm Thread, Resistor, Each

Part Number: ADO-41-828

Not Yet Reviewed

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, RN4C, Copper Plus, 14mm Thread, .750 in. Reach, Resistor, Each

Part Number: CPN-104

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

USE AUP 373

Part Number: CPN-506

Not Yet Reviewed

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Copper Plus, Nickel Copper Alloy, 14mm Thread, 0.750 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each

Part Number: CPN-120

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 27, 2025 if ordered today

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Estimated Ship Date: Jun 27, 2025 if ordered today

Spark Plug, Non-Resistor, Nickel Tip, Copper Core, 18mm Thread Size, 0.752 in. Reach, Gasket Seat, Each

Part Number: ATL-373

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 23, 2025 if ordered today

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Estimated Ship Date: Jun 23, 2025 if ordered today

Spark Plug, Copper, 18mm Thread, 0.500 in. Reach, Gasket Seat, 7/8 in. Wrench Size, Each

Part Number: ADO-C87

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jul 14, 2025 if ordered today

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Estimated Ship Date: Jul 14, 2025 if ordered today

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

Part Number: CPN-803

Not Yet Reviewed

Estimated Ship Date: Jun 26, 2025 if ordered today

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Estimated Ship Date: Jun 26, 2025 if ordered today

Spark Plug, Copper, 14mm Thread, 0.375 in. Reach, Flat Seat, 19mm Wrench Size, Each

Part Number: ATL-265

Not Yet Reviewed

Estimated Ship Date: Jun 23, 2025 if ordered today

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Estimated Ship Date: Jun 23, 2025 if ordered today

Spark Plug, N4C, Copper Core, 14mm Thread, .750in. Reach, Set

Part Number: CPN-803C

Not Yet Reviewed

Estimated Ship Date: Jun 26, 2025 if ordered today

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Estimated Ship Date: Jun 26, 2025 if ordered today

Spark Plug, Industrial, Gasket Seat, Nickel Alloy, 0.500 in. Reach, 18mm Thread Size, Each

Part Number: CPN-514

Not Yet Reviewed

Estimated Ship Date: Jun 27, 2025 if ordered today

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Estimated Ship Date: Jun 27, 2025 if ordered today

Spark Plug, RN12YC, Copper Plus, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-404

4.94 out of 5 stars ( 16 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Standard Series, Gasket Seat, 14mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-5422

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Platinum Power, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each

Part Number: CPN-3405

4.62 out of 5 stars ( 13 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Resistor, Each

Part Number: NGK-5044

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

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

Part Number: NGK-7734

Not Yet Reviewed

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

Spark Plug, Traditional, 14mm Thread, .500 in. Reach, 13/16 in. Hex, Gasket Seat, Resistor, Each

Part Number: NGK-3922

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 6/23/2025

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Estimated Ship Date: Monday 6/23/2025

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