C6 Corvette NGK G-Power Spark Plugs - LS2

NGK G-Power TR5GP Platinum Spark Plugs for C6 Corvette LS2

NGK G-Power TR5GP platinum spark plugs, stock number 3186, fit the 2005–2007 C6 Corvette LS2 with its stock LS2 6.0L V8. This offer supplies eight spark plugs as two manufacturer packs of four, giving you a complete engine set for scheduled spark-plug replacement.

For the first three C6 model years, a plug service starts with the correct 6.0L engine match. G-Power adds a fine-wire platinum center tip to that replacement: its 0.6 mm firing point concentrates the spark, while the shaped ground electrode reduces flame quenching. These are practical construction features for keeping your stock LS2 maintained.

Product Details

• Plug identity: NGK 3186, design code TR5GP, G-Power platinum spark plugs.
• Firing-end design: Single platinum center tip, 0.6 mm fine-wire center electrode and trapezoidal ground electrode.
• Internal construction: 98% pure copper core and high-grade alumina silicate ceramic insulation.
• Complete quantity: Two four-packs provide eight matching plugs; select order quantity one to service one V8.
• Included: Spark plugs only. Ignition coils, plug wires and installation tools are separate.

Benefits

• Focused ignition: The fine-wire platinum tip supports ignitability during normal combustion.
• Reduced flame quenching: The ground-electrode shape helps limit interference with the flame as it starts.
• Heat management: A copper core helps dissipate firing-end heat; ceramic insulation supports electrical isolation.
• One complete service set: Replace all eight plugs together in your early C6 coupe or convertible, with the correct quantity already grouped for the job.

Important Notes

• Early C6 engine match: Select this set for a 2005–2007 Base car with the 6.0L LS2. The engine and model-year combination identifies the fitment, including the first 2005 model year.
• Coupe and convertible: Both LS2 body styles are covered with manual or automatic transmissions. During replacement, remove plug wires by their boots rather than pulling on the cables, and inspect the boots before refitting.
• Application gap: Use 0.040 inch (1.02 mm) for this stock LS2 fitment. Check each plug before fitting it; the factory setting is not assumed to match the required engine gap.
• Fine-wire care: Measure with a round-wire or pin gauge. If adjustment is needed, move only the ground electrode without levering against the platinum center tip or ceramic insulator.
• Installation: Fit clean, dry threads without anti-seize and follow the vehicle torque specification. Have your engine builder confirm requirements for a modified engine before ordering.

CORVETTE COMPATIBILITY

• 2005–2007 C6 Corvette Base
• Coupe and convertible
• LS2 6.0L V8, stock configuration
• Manual and automatic transmissions

Why Buy from Custom Corvette Accessories?

At Custom Corvette Accessories, we’re Corvette owners ourselves, and we offer one-on-one customer service to help you choose parts for your car. Have a question about NGK 3186 TR5GP G-Power platinum spark plugs for your C6 Corvette LS2? Contact us for personal help before you order.