MSD 8.5mm Super Conductor Spark Plug Wire Sets

4.65 out of 5 stars 1987 Customer Reviews

MSD 8.5mm Super Conductor spark plug wire sets feature a special helically wound core that has just 40-50 ohms of resistance per foot—but with an RFI suppression eq

MSD 8.5mm Super Conductor spark plug wire sets feature a special helically wound core that has just 40-50 ohms of resistance per foot—but with an RFI suppression equal to a 1,500 ohm wire. In fact, each foot of finished wire includes 40 ft. of tightly wound copper for superior conductivity. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference "choke." This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle.

A tough, 8.5mm synthetic/silicone jacket over an extra-heavy glass braid and dielectric insulator keeps the current guided to the plugs. Underneath the high-temperature boots, dual crimp stainless steel terminals feature snap-locks to ensure a secure fit. Each set comes with clip-on cylinder markers for easy identification. MSD's 8.5mm Super Conductor wire sets are available in custom or universal-fit applications, assembled or not, with a variety of terminal and boot end options.

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31223

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Black, 90 Degree Boots, Universal, L8/V8, Set

Part Number: MSD-31223

4.84 out of 5 stars ( 56 )

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31193

Spark Plug Wires, 8.5mm, Super Conductor, Spiral Core, Black, Multi-Angle Boots, Universal, L8/V8, Set

Part Number: MSD-31193

4.71 out of 5 stars ( 75 )

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 35599

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, 90 Degree Boots, Chevy, Small Block, V8, Set

Part Number: MSD-35599

4.55 out of 5 stars ( 199 )

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31189

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Universal, L8/V8, Set

Part Number: MSD-31189

4.52 out of 5 stars ( 102 )

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31199

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Universal, L8/V8, Set

Part Number: MSD-31199

4.82 out of 5 stars ( 44 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 35593

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Black, 90 Degree Boots, Chevy, Small Block, V8, Under Headers, Set

Part Number: MSD-35593

4.38 out of 5 stars ( 37 )

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31183

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Black, Multi-Angle Boots, Universal, L8/V8, Set

Part Number: MSD-31183

4.9 out of 5 stars ( 30 )

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31229

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, 90 Degree Boots, Universal, L8/V8, Set

Part Number: MSD-31229

4.87 out of 5 stars ( 69 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31329

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Ford, Small Block, 351W, V8, Set

Part Number: MSD-31329

4.94 out of 5 stars ( 34 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31323

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Black, Multi-Angle Boots, Ford, Small Block/351W

Part Number: MSD-31323

4.88 out of 5 stars ( 17 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31179

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Universal, L6/V6, Set

Part Number: MSD-31179

4.11 out of 5 stars ( 9 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 30479

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, 90 Degree Boots, Chevy, Small Block, V8, Set

Part Number: MSD-30479

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31489

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Stock Boots, Chevy, Big Block, Marine, Set

Part Number: MSD-31489

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31299

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, 90 Degree Boots, Chevy, Big Block, V8, Set

Part Number: MSD-31299

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31293

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Black, 90 Degree Boots, Chevy, Big Block, V8, Set

Part Number: MSD-31293

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 32119

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Chevy, GMC, 454, Set

Part Number: MSD-32119

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets for 1981-1990 PICKUP - 31949

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Stock Boots, Toyota, 2.2/2.4L, Set

Part Number: MSD-31949

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets for 1990-2000 MIATA - 32599

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Stock Boots, Mazda, Miata, 1.6/1.8L, Set

Part Number: MSD-32599

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31309

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Chrysler, Small Block, V8

Part Number: MSD-31309

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31419

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, 90 Degree Boots, Chevy, GMC, 5.0/5.7L, V8, Set

Part Number: MSD-31419

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31159

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Universal, L4, Set

Part Number: MSD-31159

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 30839

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Hemi Boots, Pro Stock, Chevy, Big Block, V8, Set

Part Number: MSD-30839

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets 31543

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Black, 90 degree Boots, Chevy, Small Block, Set

Part Number: MSD-31543

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

MSD 8.5mm Super Conductor Spark Plug Wire Sets 31259

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, Multi-Angle Boots, Ford, 2.3L, L4, Set

Part Number: MSD-31259

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

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MSD 8.5mm Super Conductor Spark Plug Wire Sets for 1984-1991 CORVETTE - 31459

Spark Plug Wires, Super Conductor, Spiral Core, 8.5mm, Red, 180/90 Degree Boots, Chevy, Set

Part Number: MSD-31459

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

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