258 Results Found For "Performance"

Autolite was founded in 1911 and has been delivering reliable spark to motor vehicles since 1935. The company developed many of today’s spark plug materials and...

Autolite was founded in 1911 and has been delivering reliable spark to motor vehicles since 1935. The company developed many of today’s spark plug materials and continues to be a leader in spark plug innovation. Autolite spark plugs help power everything from fuel-efficient daily drivers to high performance race machines. Energize your ride with proven Autolite spark plugs, including copper-core racing spark plugs, long-lasting double platinum spark plugs, and iridium-enhanced XP Xtreme Performance plugs. Shop Summit Racing for a full line of Autolite spark plugs now!

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Results 1 - 25 of 258

Autolite XP Xtreme Performance Spark Plugs XP3924

Spark Plug, Iridium XP Enhanced Alloy, Resistor, 14mm x 1.25, Tapered Seat, 0.750 in, Reach, Each

Part Number: ATL-XP3924

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP985

Spark Plug, Iridium XP Enhanced Alloy, Resistor, 14mm x 1.25, Tapered Seat, 0.750 in, Reach, Each

Part Number: ATL-XP985

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP5325

Spark Plug, Iridium XP Enhanced Alloy, Resistor, 14mm x 1.25, Tapered Seat, 1.05 in, Reach, Each

Part Number: ATL-XP5325

Not Yet Reviewed

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP25

Spark Plug, XP Xtreme Performance, Copper Core, Tapered Seat, 14mm Thread, 0.460 in. Reach, Resistor, Each

Part Number: ATL-XP25

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP5245

Spark Plug, Resistor, Iridium Tip, Copper Core, 14mm Thread Size, 0.708 in. Reach, Tapered Seat, Each

Part Number: ATL-XP5245

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP103

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-XP103

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP24

Spark Plug, Iridium XP Enhanced Alloy, Resistor, 14mm x 1.25, Tapered Seat, 0.431 in, Reach, Each

Part Number: ATL-XP24

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP605

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-XP605

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP104

Spark Plug, XP, Copper Core, Tapered Seat, 14mm Thread, 0.708 in. Reach, Projected Tip, Non-resistor, Each

Part Number: ATL-XP104

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP3923

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.750 in. Reach, Gasket Seat, 13/16 in. Wrench Size, Each

Part Number: ATL-XP3923

Not Yet Reviewed

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XS4164

Spark Plug, XP Xtreme Performance, Iridium, 12mm Thread, 0.750 in. Reach, Gasket Seat, 11/16 in. Wrench Size, Each

Part Number: ATL-XS4164

Not Yet Reviewed

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs XP5263

Spark Plug, Iridium XP Enhanced Alloy, Resistor, 14mm x 1.25, Gasket Seat, 0.982 in, Reach, Each

Part Number: ATL-XP5263

Not Yet Reviewed

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite XP Xtreme Performance Spark Plugs AXP3922

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.750 in. Reach, Gasket Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-XP3922

Not Yet Reviewed

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Autolite XP Xtreme Performance Spark Plugs XP64

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.750 in. Reach, Gasket Seat, 13/16 in. Wrench Size, Each

Part Number: ATL-XP64

Not Yet Reviewed

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Autolite XP Xtreme Performance Spark Plugs XP5243

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-XP5243

Not Yet Reviewed

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Autolite XP Xtreme Performance Spark Plugs XP26

Spark Plug, XP Xtreme Performance, Copper Core, Tapered Seat, 14mm Thread, 0.433 in. Reach, Resistor, Each

Part Number: ATL-XP26

Not Yet Reviewed

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Autolite Racing Spark Plugs R134

5 out of 5 stars ( 6 )

Estimated Ship Date: Monday 12/1/2025

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Autolite XP Xtreme Performance Spark Plugs XS4303

Spark Plug, XP Xtreme Performance, Iridium, 10mm Thread, 0.750 in. Reach, Flat Seat, 16mm Wrench Size, Each

Part Number: ATL-XS4303

Not Yet Reviewed

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Autolite XP Xtreme Performance Spark Plugs XP5364

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-XP5364

Not Yet Reviewed

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NGK Iridium IX Spark Plugs LTR5IX-11

5 out of 5 stars ( 6 )

Estimated Ship Date: Monday 12/1/2025

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Autolite XP Xtreme Performance Spark Plugs XP606

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-XP606

5.0 out of 5 stars ( 1 )

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Autolite XP Xtreme Performance Spark Plugs XP105

Spark Plug, XP Xtreme Performance, Iridium, 14mm Thread, 0.708 in. Reach, Tapered Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-XP105

Not Yet Reviewed

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Autolite XP Xtreme Performance Spark Plugs XP63

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

Part Number: ATL-XP63

Not Yet Reviewed

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ACDelco RAPIDFIRE Performance Platinum Spark Plugs 19307141

5 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/1/2025

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Autolite Copper Core Spark Plugs 3924

Spark Plug, Copper, 14mm Thread, 0.750 in. Reach, Gasket Seat, 5/8 in. Wrench Size, Each

Part Number: ATL-3924

4.82 out of 5 stars ( 62 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite Copper Core Spark Plugs 45

Spark Plug, Copper Core, Resistor, 18mm x 1.50, Tapered Seat, 0.438 in, Reach, Each

Part Number: ATL-45

4.94 out of 5 stars ( 17 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

Autolite Copper Core Spark Plugs 25

Spark Plug, Copper Core, Tapered Seat, 14mm Thread, .460 in. Reach, Partial Projected, Resistor, Each

Part Number: ATL-25

4.82 out of 5 stars ( 17 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

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 )

Estimated Ship Date: Monday 12/1/2025

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Estimated Ship Date: Monday 12/1/2025

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