Description
Reliable spark delivery is non-negotiable in high-performance LS engines, and factory wire sets often become a bottleneck as boost levels and RPM climb. The 409 Spiro-Pro Race Plug Wire Set eliminates weak ignition signals with a proven spiral-core design that resists EMI and maintains consistent spark timing under extreme conditions. Direct fitment to GM LS engines (2003–2014) means bolt-on installation without fabrication or tuning compromises.
- Spiral core construction
- 10.4 mm diameter
- 135-degree plug boots
- Factory-style terminals
- Red color
- Complete kit included
- GM LS-series fitment
- Model years 2003–2014
- MPN: 79214
