MSD's 8.5mm Super Conductor plug wires deliver low resistance without electronic interference, using a copper alloy conductor wound tightly around a ferro-magnetic center core to choke off EMI while sending maximum spark energy to the plug. Dual Crimp terminals grip both the wire's sleeve and its conductor separately for a secure connection at each end.
Specifications:
- Wire Type: 8.5 Super Conductor
- Application: GM LS Engines
- Boot Material: Silicone, Multi-Angle
- Core: Copper
- Color: Red
- Resistance: 40-50 Ohms Per Foot
- Wire Length: 13 in.
- Part Number: 39849
Custom-fit for 2001-and-newer GM 8.1L trucks running LS-style engines.
FAQ
What vehicles is the MSD 39849 wire set built for?
It is custom-fit for 2001-and-newer GM 8.1L trucks, including Silverado, Sierra, Suburban, and Yukon XL heavy-duty models with LS-style engines.
What resistance does this wire set carry?
MSD's 8.5mm Super Conductor wire measures 40-50 ohms per foot.
How long are the wires?
They're cut to a 13 inch length to match the GM 8.1L truck application.
What is the boot material?
Silicone boots with a multi-angle design for flexible plug clearance.

