8.5MM Wire Set - '85-87 Buick GN/T-Type 3.8L

The 8.5MM Wire Set for '85-87 Buick GN/T-Type 3.8L is a precision ignition component engineered for turbocharged and naturally aspirated applications demanding reliable spark delivery. Built by MSD Ignition, a leader in performance ignition systems, this spark plug wire set replaces deteriorated factory wiring on second-generation Buick Grand National and T-Type models. Whether you're restoring a classic muscle car or maintaining peak performance on a modified 3.8L V6, quality ignition wires are essential to prevent misfires, driveability issues, and potential engine damage caused by arcing or resistance degradation.

This 8.5 mm Super Conductor wire set features a spiral core construction that minimizes electromagnetic noise and radio frequency interference—critical in turbocharged engines where high-voltage transients can trigger knock sensors and create false lean conditions. The red factory-style boots and terminals ensure OEM-correct fitment and appearance while maintaining full compatibility with original engine bay layout. Super Conductor technology delivers consistent voltage transfer across the full ignition cycle, reducing voltage drop compared to conventional wires and promoting complete combustion even under boost or high load.

Buick GN and T-Type enthusiasts, turbocharged 3.8L engine builders, and restoration specialists benefit most from this wire set's precision engineering and factory compatibility. Installation is straightforward—simply remove the old wire set and route new conductors along the same path to avoid contact with hot exhaust manifolds or moving belts. The MSD 31869 wire set delivers the voltage reliability required for both street and light boost applications, making it the go-to choice for anyone serious about ignition system integrity on these classic Buicks.