Brisk USA Brisk Spark Plug 2 Step Colder GR12S
Spark Plug, Silver Racing, 14 mm Thread, 18 mm Reach, Heat Range 12, Tapered Seat, Resistor
Brisk GR12S Replaces:
NGK TR8
Popular Applications:
Chevy LSx
Ford 4.6/5.4 2-Valve and 4-Valve Engines
Features:
Ignites effectively even in the presence of fouling, typical failure of standard plugs
Silver center electrode, superior thermal (heat) and electrical conductivity
Requires lower voltage
Minimizes wear on ignition coil, leads, and other components
1.5 mm Silver Wire Center Electrode
Applications:
Performance-tuned and racing engines
Vehicles powered by alternative fuels
Classic cars with less robust ignition systems or high oil consumption
High RPM racing engines requiring quick ignition coil activation
High octane or difficult-to-ignite fuels
Methanol, ethanol, CNG, LPG, propane, E85 blends, alcohol, LNG, racing fuels, nitromethane, nitrous oxide
Naturally aspirated or turbocharged setups
Standard and high-compression engines
| Brand | Brisk |
| Part Number | GR12S |
| Thread Diameter | 14mm |
| Thread Reach | 18mm-.708" |
| Hexagon | 16mm-5/8" |
| Seat Type | Tapered |
| Design | Silver Racing |
| Resistor | Yes |
| Projected | No |
| Heat Range | 12 |