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GMC K15 Spark Plug Wires and Ignition Wiring
This page brings together spark plug wires and ignition wiring for the GMC K15, covering model years 1975–1978. The range includes complete wire sets, individual spark plug wires, and boot kits suited to the era of these trucks. Select your year above and we'll show only the spark plug wires and ignition wiring that fit your GMC K15. Fitment is checked against our vehicle data for every part listed.
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MSD 31223 8.5mm Super Conductor Universal Spark Plug Wire Set 8-Cylinder 90° Plug/90° Plug
Part: 31223
Universal Fit
$145.95
In Stock (10+)
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Moroso 73819 Ultra 40 Race Wire Set Over Valve Covers HEI-Style
Part: 73819
Vehicle Specific
$254.87
In Stock (5)
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MSD 31489 Super Conductor 8.5mm Spark Plug Wire Set Big Block Chevy Marine HEI Red
Part: 31489
Universal Fit
$207.95
In Stock (10+)
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MSD 31189 8.5mm Super Conductor Spark Plug Wire Set Multi-Angle Plug HEI Cap Universal V8
Part: 31189
Universal Fit
$145.95
In Stock (10+)
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MSD 31183 Super Conductor 8.5mm Spark Plug Wire Set 8-Cylinder Multi-Angle HEI Universal
Part: 31183
Universal Fit
$160.95
In Stock (10+)
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Moroso 9862M Mag-Tune Spark Plug Wires HEI 90° Spiral Core Black GM Small Block
Part: 9862M
Vehicle Specific
$39.87
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Moroso 9866M Mag-Tune Spark Plug Wires 8.0mm HEI 90 Degree Black Big Block Chevy
Part: 9866M
Vehicle Specific
$39.54
4 left at this price
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MSD 5565 Street-Fire Spark Plug Wire Set Small Block Chevy Socket Cap Over Valve Cover
Part: 5565
Vehicle Specific
$81.95
In Stock (5)
MSD 5554 Street-Fire 8mm Spark Plug Wire Set Small Block Chevy HEI
Part: 5554
Vehicle Specific
$71.95
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MSD 35609 Super Conductor 8.5mm Spark Plug Wire Set Big Block Chevy HEI Tower Cap
Part: 35609
Vehicle Specific
$173.95
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Moroso 72416 Blue Max Spiral Core Sleeved Spark Plug Wire Set Big Block Chevy HEI
Part: 72416
Vehicle Specific
$225.57
2 left at this price
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MSD 31353 Super Conductor 8.5mm Spark Plug Wire Set Black Small Block Chevy HEI
Part: 31353
Vehicle Specific
$160.95
In Stock (10+)
MSD 5552 Street-Fire Spark Plug Wire Set 8-Cylinder HEI 90-Degree Universal
Part: 5552
Universal Fit
$81.95
In Stock (10+)
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Moroso 73600 Ultra 40 Race Wire Set for Small Block Chevy 90-Degree Boots
Part: 73600
Vehicle Specific
$251.48
In Stock (5)
MSD 31293 Black 8.5mm Super Conductor Spark Plug Wire Set Big Block Chevy
Part: 31293
Vehicle Specific
$94.95
1 left at this price
MSD 5567 Street-Fire 8mm Spark Plug Wire Set Big Block Chevy 454 HEI
Part: 5567
Vehicle Specific
$81.95
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What's here for your GMC K15
- Spark Plug Wire Sets — complete replacement sets in black and performance configurations
- Individual Spark Plug Wires — single replacement wires for targeted repairs
- Single Lead Spark Plug Wires — universal and header-specific leads, including ceramic-coated options
- Spark Plug Boot Kits — chrome and ceramic boot kits for sealing and protecting wire ends
The widest selection here comes from MSD, Moroso, TAYLOR, and ACDelco, covering a broad range of styles and construction types for 1975–1978 applications. Other categories GMC K15 owners shop for: GMC K15 Steering Wheels, GMC K15 Exhaust and Tail Pipes and GMC K15 Doors and Door Parts, or browse all GMC K15 parts and accessories.