Engineered from the inside out, this MSD 8.5mm Super Conductor single-wire Hemi set delivers incredibly low resistance without electronic interference, thanks to a copper alloy conductor wound over 40 feet per foot of wire around a ferro-magnetic core. It ships extra-long and universal so it can be cut to a custom length for a clean installation, supplied with Red Hemi tubes, boots and terminals, and is pre-crimped at the spark plug end.
Specifications:
- Brand: MSD
- Product Type: Spark Plug Wire Set (single wire)
- Application: Chrysler Hemi, ProMag ignition, universal cut-to-length
- Wire Diameter: 8.5mm (Super Conductor)
- Insulation Color: Red
- Resistance: 40-50 ohms per foot
- Includes: Red Hemi tubes, boots, terminals, mini-crimper
- Warranty: Manufacturer's Limited 1-Year Warranty
- Warning: California Proposition 65
- Part Number: 31529
Pre-crimped at the spark plug end; the distributor end is left open to cut to the desired length.
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
Is this wire set legal for street use?
No. This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
What engine application is this wire set built for?
This is a single-wire Hemi wire set designed for Chrysler Hemi ProMag ignition applications.
Does this wire set need to be cut to length?
Yes. It ships extra-long and universal, pre-crimped at the spark plug end, so it can be cut to the desired length and finished at the distributor end using the included mini-crimper.
What is included with this wire set?
It's supplied with Red Hemi tubes, boots, terminals, and a mini-crimper for finishing the cut end.

