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Street Race Truck More... The Toolbox

The easiest way to Increase horsepower, increase fuel mileage, and lower emissions is to upgrade to high performance spark plugs from Speedway Motors. With the largest assortment of spark plugs with various tips, thread sizes, seats, reaches, and heat transfers, you will find the quality spark plug you need to achieve the performance you are looking for. Speedway Motors has spark plugs from brands like Accel, Autolite, Longacre, NGK Spark Plugs, and Champion Spark Plugs in stock and ready to ship today at the lowest prices around!

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Brisk GOR15LGS Premium LGS Spark Plug, GM Chevy 602

602, Tapered Spark Plug Seat Style, 14mm Thread Pitch

On Sale

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.708"

Thread Pitch: 14mm

Insulator Type: Projected

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NGK Spark Plug TR51X Iridium IX Spark Plug

Universal Fit, Tapered Spark Plug Seat Style

On Sale
New Product

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.709"

Thread Pitch: 14mm

Insulator Type: Projected

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NGK Spark Plug for GM 602 Racing Crate Motors

Tapered Spark Plug Seat Style, 0.708" Spark Plug Reach

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.708"

Thread Pitch: 14mm

Insulator Type: Projected

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Champion 693C55 Racing Spark Plug, 14mm, 5/8 Hex, .750 Reach

Gasket Spark Plug Seat Style, 0.75" Spark Plug Reach

New Product

Spark Plug Seat Style: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

Insulator Type: Non-projected

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Champion 844 H10C SE Flathead Spark Plugs

Gasket Spark Plug Seat Style, Gasket Seat Taper

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.4375"

Thread Pitch: 14mm

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Autolite AR133 14mm Racing Spark Plug-5/8 Hex, Tapered, .46 Reach, Med

Universal Fit, Tapered Spark Plug Seat Style

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Insulator Type: Non-projected

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Accel 0576S-4 Shorty Spark Plug, 5/8 Hex, .460 Reach, Tapered

Universal Fit, 0.46" Spark Plug Reach, Is Resistor

Video Available

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Thread Length: 0.25"

Insulator Type: Projected

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Autolite AR3933 14mm Racing Spark Plug 5/8 Hex Gasket 3/4 Reach, Hot

Universal Fit, Gasket Spark Plug Seat Style

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

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NGK R5671A-8 Spark Plug for Sprint 305 Racing Engines

305, Gasket Spark Plug Seat Style, Gasket Seat Taper

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

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NGK 7317 R5724-8 V-Power Racing Spark Plug

Universal Fit, Tapered Spark Plug Seat Style

On Sale

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.708"

Thread Pitch: 14mm

Insulator Type: Projected

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Accel 0437S-4 U-Groove Shorty Spark Plug, 13/16 Hex, 3/8 Reach, Gasket

Universal Fit, Gasket Spark Plug Seat Style

Video Available

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.375"

Thread Pitch: 14mm

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NGK R5671A-9 Spark Plug for Sprint 360 Racing Crate Motors

Gasket Spark Plug Seat Style, Gasket Seat Taper

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

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Autolite AR134 14mm Spark Plug-5/8 Hex Taper Seat .46-Slightly Hotter

Universal Fit, Tapered Spark Plug Seat Style

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Insulator Type: Non-projected

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Autolite 216 Flathead Spark Plugs

Gasket Spark Plug Seat Style, Gasket Seat Taper

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.437"

Thread Pitch: 14mm

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Champion 71 RC12YC Spark Plugs for Edelbrock Flathead Ford Heads

Gasket Spark Plug Seat Style, 0.75" Spark Plug Reach

Spark Plug Seat Style: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

Thread Length: 0.75"

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Champion 792 C59YC 14mm Spark Plug, .750 Reach 5/8 Hex 59 Range Cold

Universal Fit, Gasket Spark Plug Seat Style

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

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Accel 0276S-4 U-Groove Shorty Spark Plug, 5/8 Hex, .460 Reach, Tapered

Universal Fit, Tapered Spark Plug Seat Style

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Insulator Type: Projected

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NGK 3526 BP7EFS 604 Crate Engine Spark Plug, Cool Temp.

604, Tapered Spark Plug Seat Style, 14mm Thread Pitch

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.708"

Thread Pitch: 14mm

Insulator Type: Projected

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NGK R5671A-10 Spark Plug for Sprint 410 Racing Crate Motors

Gasket Spark Plug Seat Style, Gasket Seat Taper

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

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NGK Spark Plug for GM 525/604 Racing Crate Motors

604, Tapered Spark Plug Seat Style, 14mm Thread Pitch

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.708"

Thread Pitch: 14mm

Insulator Type: Projected

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Autolite AR135 14mm Spark Plug, 5/8 Hex, Tapered, .460 Inch Reach, Hot

Universal Fit, Tapered Spark Plug Seat Style

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Insulator Type: Non-projected

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NGK CR10EK Spark Plugs

$7.99
$10.99

Gasket Spark Plug Seat Style, 0.75" Spark Plug Reach

On Sale

Spark Plug Seat Style: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 10mm

Insulator Type: Non-projected

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NGK Spark Plug for GM 602 Racing Crate Engine, Cool Heat Range

602, Tapered Spark Plug Seat Style, 14mm Thread Pitch

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.69"

Thread Pitch: 14mm

Insulator Type: Projected

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Autolite AR3932 14mm Racing Spark Plug-5/8 Hex-Gasket Seat 3/4 Reach

Universal Fit, Gasket Spark Plug Seat Style

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

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Autolite AR132 14mm Spark Plug-5/8 Hex Taper Seat .46-Slightly Colder

Universal Fit, Tapered Spark Plug Seat Style

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Insulator Type: Non-projected

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Autolite A3924 Spark Plugs for Edelbrock Flathead Ford Heads

Tapered Spark Plug Seat Style, 0.75" Spark Plug Reach

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

Thread Length: 0.6"

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Accel 0574S-4 U-Groove Shorty Spark Plug, 5/8 Hex, .460 Reach, Tapered

Universal Fit, Tapered Spark Plug Seat Style

Video Available

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Thread Length: 0.25"

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Autolite AR3934 14mm Racing Spark Plug-5/8 Hex-Gasket-3/4 Reach-Hot

Universal Fit, Gasket Spark Plug Seat Style

Spark Plug Seat Style: Gasket

Seat Taper: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

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ACCEL 0416S-4 Spark Plug, 14mm Thread, Shorty, .750 Inch, 4 Pack

$25.99
$27.98

350, 307, Gasket Spark Plug Seat Style, Is Resistor

On Sale
Video Available

Spark Plug Seat Style: Gasket

Spark Plug Reach: 0.75"

Thread Pitch: 14mm

Insulator Type: Projected

Compare
Quick View

Accel 0566-4 14mm U-Groove Spark Plug-5/8 Hex, .460 Reach Tapered Seat

Universal Fit, Tapered Spark Plug Seat Style

Spark Plug Seat Style: Tapered

Spark Plug Reach: 0.46"

Thread Pitch: 14mm

Insulator Type: Non-projected

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