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E3 Spark Plugs

E3 DiamondFIRE Racing Spark Plugs

4.38 out of 5 stars 29 Customer Reviews

Designed specifically for conditions at the track, E3 DiamondFIRE racing spark plugs combine a maximized spark presentation and optimized flame propagation. The unique patented DiamondFIRE electrode configuration of these new E3 spark plugs increases the amount of combustion pressure created during each power stroke of an engine. Round after round, lap after lap, the E3 DiamondFIRE racing spark plugs provide you the consistency you need for winning performance.

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E3 DiamondFIRE Racing Spark Plugs E3.114

E3 DiamondFIRE Racing Spark Plugs E3.114

E3 DiamondFIRE Racing Spark Plugs E3.114

Spark Plug, Racing, Copper Core, Gasket Seat, High Compression, Modified Surface Gap, 14mm Thread, 0.750 in. Reach, Each

Part Number: ETP-E3-114

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.112

E3 DiamondFIRE Racing Spark Plugs E3.112

E3 DiamondFIRE Racing Spark Plugs E3.112

Spark Plug, E3 Racing, Copper Core, Gasket Seat, 14mm Thread, 1 in. Reach, Chrysler, Dodge, Ford, Each

Part Number: ETP-E3-112

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.105

E3 DiamondFIRE Racing Spark Plugs E3.105

E3 DiamondFIRE Racing Spark Plugs E3.105

Spark Plug, Racing, Copper Core, Tapered Seat, 14mm Thread, 0.460 in. Reach, Each

Part Number: ETP-E3-105

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.103

E3 DiamondFIRE Racing Spark Plugs E3.103

E3 DiamondFIRE Racing Spark Plugs E3.103

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

Part Number: ETP-E3-103

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.101

E3 DiamondFIRE Racing Spark Plugs E3.101

E3 DiamondFIRE Racing Spark Plugs E3.101

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

Part Number: ETP-E3-101

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.102

E3 DiamondFIRE Racing Spark Plugs E3.102

E3 DiamondFIRE Racing Spark Plugs E3.102

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

Part Number: ETP-E3-102

4.13 out of 5 stars ( 8 )

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.109

E3 DiamondFIRE Racing Spark Plugs E3.109

E3 DiamondFIRE Racing Spark Plugs E3.109

Spark Plug, Racing, Copper Core, Tapered Seat, 14mm Thread, 0.708 in. Reach, Each

Part Number: ETP-E3-109

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.108

E3 DiamondFIRE Racing Spark Plugs E3.108

E3 DiamondFIRE Racing Spark Plugs E3.108

Spark Plug, Racing, Copper Core, Tapered Seat, 14mm Thread, 0.708 in. Reach, Each

Part Number: ETP-E3-108

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.110

E3 DiamondFIRE Racing Spark Plugs E3.110

E3 DiamondFIRE Racing Spark Plugs E3.110

Spark Plug, E3 Racing, Copper Core, Gasket Seat, 12mm Thread, 0.750 in. Reach, Each

Part Number: ETP-E3-110

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.100

E3 DiamondFIRE Racing Spark Plugs E3.100

E3 DiamondFIRE Racing Spark Plugs E3.100

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

Part Number: ETP-E3-100

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

E3 DiamondFIRE Racing Spark Plugs E3.116

E3 DiamondFIRE Racing Spark Plugs E3.116

E3 DiamondFIRE Racing Spark Plugs E3.116

Spark Plug, Racing Spark Plug for Nitromethane Fueled Engines, 14mm Thread, 0.750 in. Reach, 13/16 Hex, Gasket Seat, Each

Part Number: ETP-E3-116

Not Yet Reviewed

Estimated Ship Date: Monday 10/20/2025

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Estimated Ship Date: Monday 10/20/2025

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