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Vehicle Info NeededMSD IGNITIONPART NUMBER: 121-31339
Super Conductor 8.5mm Wires Red
$18695$207.95You Save$21.00
1 left in stock
Ships on Sep 08, 2026
Lowest Price GuaranteeFord 8-cylinder
- Super Conductor 8.5mm Wires
- Red
- Ford 351M/400 with HEI terminal cap
- Distributor Boots: 90° HEI (Male Post)
- Plug Boots: Straight (Multi-angle)
Super Conductor Wires for various Ford Cars and Trucks with 351M/400 engines and HEI terminal distributor caps from 1975-1979. - Custom fit for make and model listed.
- Wires are precut to exact specifications
- Bolt-on performance
Part TypeSpark Plug Wire
BrandMSD IGNITION
Package Height2.7
Package Width9.6
Package Length11.0
Weight2.35 PG
Part CategoryPerformance Parts
Diameter (Mm)8.5
Distributor Boot MaterialSilicone
PositionN/A
ColorRED
Wire ColorRed
QuantitySold as a set
AssembledYes
Spark Plug Boot EndsEight multi-angle
Spark Plug Boot ColorGray
Distributor Terminal EndsMale/HEI
Spark Plug Boot MaterialSilicone
Distributor Boot ColorGray
Coil Wire IncludedYes
Rfi SuppressionYes
Conductor StyleSpiral core
Part FitmentSemi Universal
Boot TypeMulti-Angle
Vendor Part Number31339
Package Qty1
Package TypeEA
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