Taylor Cable 74657 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Taylor Cable 74657 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Part Number: 74657 / UPC 088197746574
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Features & Benefits

  • 350 ohms per foot
  • 8.0mm Outer Silicone Jacket
  • Silicone inner core provides added heat protection and superior flexibility throughout its lifetime
  • Highly conductive stainless steel spiral wound core
  • Superior RFI / EMI suppression for applications with CD or electronic ignitions, on board computers, stereos, or pit radios

Custom Spark Plug Wire Sets are duplicates of your OE wire set. Each wire is cut to length and booted to match your original wires. 8mm Spiro Pro Wire is the top choice of racers and enthusiasts due to its affordable value and overall high-performance features. Spiro Pro 8mm or 10.9mm wires feature 350 ohms per foot with the signature Taylor Cable boot for the street or the track.


For over 90 years, Taylor Cable Products have been the top choice of racers and enthusiasts for its value and high-performance features. Taylor Cable is an icon of quality and customer satisfaction in the automotive performance and racing markets. We are proud to have our Ignition Wire Sets firing some of the fastest race and street vehicles in the world.

Installation instructions

Instruction Manual
Installation Instructions

Download PDF

Shipping & Delivery

Our ignition and exhaust products ship from our warehouse in Lenexa, KS. Our normal shipping time is 2-3 business days for in-stock parts.

 Shipping Class Order Value Shipping Cost
UPS Ground $0 - 49.99 $6.99 flat rate
UPS Ground $50 - 98.99 $7.49 flat rate
UPS Ground $99+ Free

  • At this time, PerTronix does not offer expedited shipping options from our website.
  • All packages must be inspected upon receipt for any missing or damaged goods and claims for such must be made within 7 days of receipt.
  • PerTronix does not currently ship our products internationally from our web store. For international orders call 909-599-5955 or connect with us here.

Returns & Replacements

Returns at Pertronix are accepted within 90 days of purchase with prior authorization, ensuring items are in new, resalable condition. To initiate a return, call for an RGA and follow provided instructions. Customers are responsible for return shipping, using a trackable method.

Refunds exclude initial shipping and handling fees and may be subject to a restocking fee. For defective or damaged items, contact Pertronix directly. We are not responsible for user-initiated damage/loss of parts.

For complete details, visit our Returns page.

Reviews

Taylor Cable 74657 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Taylor Cable 74657 8mm Spiro-Pro Custom Spark Plug Wires 8 cyl blue

Part Number: 74657 / UPC 088197746574
Regular price $86.95
Sale price $86.95 Regular price

Part Number: 74657 / UPC 088197746574
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Need help? Call us at 909-599-5955

  • Free shipping on $99+ orders in lower 48 states
  • 90-day return policy
  • We’re here to help! Call us on 909-599-5955
Emissions code

Emissions Code

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Features & Benefits

  • 350 ohms per foot
  • 8.0mm Outer Silicone Jacket
  • Silicone inner core provides added heat protection and superior flexibility throughout its lifetime
  • Highly conductive stainless steel spiral wound core
  • Superior RFI / EMI suppression for applications with CD or electronic ignitions, on board computers, stereos, or pit radios

Custom Spark Plug Wire Sets are duplicates of your OE wire set. Each wire is cut to length and booted to match your original wires. 8mm Spiro Pro Wire is the top choice of racers and enthusiasts due to its affordable value and overall high-performance features. Spiro Pro 8mm or 10.9mm wires feature 350 ohms per foot with the signature Taylor Cable boot for the street or the track.


For over 90 years, Taylor Cable Products have been the top choice of racers and enthusiasts for its value and high-performance features. Taylor Cable is an icon of quality and customer satisfaction in the automotive performance and racing markets. We are proud to have our Ignition Wire Sets firing some of the fastest race and street vehicles in the world.

Installation instructions

Instruction Manual
Installation Instructions

Download PDF

Shipping & Delivery

Our ignition and exhaust products ship from our warehouse in Lenexa, KS. Our normal shipping time is 2-3 business days for in-stock parts.

 Shipping Class Order Value Shipping Cost
UPS Ground $0 - 49.99 $6.99 flat rate
UPS Ground $50 - 98.99 $7.49 flat rate
UPS Ground $99+ Free

  • At this time, PerTronix does not offer expedited shipping options from our website.
  • All packages must be inspected upon receipt for any missing or damaged goods and claims for such must be made within 7 days of receipt.
  • PerTronix does not currently ship our products internationally from our web store. For international orders call 909-599-5955 or connect with us here.

Returns & Replacements

Returns at Pertronix are accepted within 90 days of purchase with prior authorization, ensuring items are in new, resalable condition. To initiate a return, call for an RGA and follow provided instructions. Customers are responsible for return shipping, using a trackable method.

Refunds exclude initial shipping and handling fees and may be subject to a restocking fee. For defective or damaged items, contact Pertronix directly. We are not responsible for user-initiated damage/loss of parts.

For complete details, visit our Returns page.

Reviews

Applications

Year / Make / Model 1984-1985 Ford LTD Crown Victoria
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Ford LTD Brougham
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Ford LTD Base
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Ford LTD Country Squire
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1985 Ford LTD LX Brougham
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Ford E-150 Econoline
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1984-1985 Ford E-150 Econoline Club Wagon
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1984-1985 Ford E-250 Econoline
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1984-1985 Ford E-250 Econoline Club Wagon
Engine Type V8
Engine Size(s) Liters: 5.8, 7.5
Cubic Inches: 351, 460
Notes

Year / Make / Model 1985 Ford E-250 Econoline Club Wagon
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1984-1985 Ford E-350 Econoline
Engine Type V8
Engine Size(s) Liters: 5.8, 7.5
Cubic Inches: 351, 460
Notes

Year / Make / Model 1985 Ford E-350 Econoline
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1984-1985 Ford E-350 Econoline Club Wagon
Engine Type V8
Engine Size(s) Liters: 5.8, 7.5
Cubic Inches: 351, 460
Notes

Year / Make / Model 1985 Ford E-350 Econoline Club Wagon
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1984-1985 Ford F-150
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1984-1985 Ford F-250
Engine Type V8
Engine Size(s) Liters: 5.8, 7.5
Cubic Inches: 351, 460
Notes

Year / Make / Model 1984-1985 Ford F-350
Engine Type V8
Engine Size(s) Liters: 5.8, 7.5
Cubic Inches: 351, 460
Notes

Year / Make / Model 1984-1985 Ford Mustang GT
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Ford Mustang LX
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984 Ford Mustang GT-350 20th Anniversary
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984 Ford Mustang L
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1987-1988 Ford Mustang LX
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1987-1988 Ford Mustang GT
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1979 Ford Thunderbird
Engine Type V8
Engine Size(s) Liters: 5.8
Cubic Inches: 351
Notes

Year / Make / Model 1987 Lincoln Mark VII LSC
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1988 Lincoln Mark VII LSC
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Mercury Capri RS
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984 Mercury Capri RS
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Mercury Grand Marquis Base
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

Year / Make / Model 1984-1985 Mercury Grand Marquis LS
Engine Type V8
Engine Size(s) Liters: 5.0
Cubic Inches: 302
Notes

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