NGK G-Power TR5GP Platinum Spark Plugs for C6 Corvette Grand Sport LS3
NGK G-Power TR5GP platinum spark plugs, stock number 3186, fit the 2010–2013 C6 Corvette Grand Sport LS3 with its stock LS3 6.2L V8. This offer supplies eight spark plugs as two manufacturer packs of four, giving you a complete engine set for scheduled spark-plug replacement.
A Grand Sport road-service refresh calls for the right engine match and a complete set. G-Power pairs a 0.6 mm fine-wire platinum center electrode with a trapezoidal ground electrode for focused sparking and reduced flame quenching. The design supplies precious-metal firing-tip construction for routine maintenance of your naturally aspirated LS3.
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 Grand Sport coupe or convertible, with the correct quantity already grouped for the job.
Important Notes
- Grand Sport fitment: Choose this set for the 2010–2013 C6 Grand Sport with the stock 6.2L LS3. Match the Grand Sport trim, model year and engine together when planning your ignition service.
- Body and transmission coverage: The Grand Sport coupe and convertible are included with manual or automatic transmissions. When servicing either body style, keep plug-wire routing clear of exhaust heat and check that each boot is securely seated.
- Application gap: Use 0.040 inch (1.02 mm) for this stock LS3 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
- 2010–2013 C6 Corvette Grand Sport
- Coupe and convertible
- LS3 6.2L naturally aspirated 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 Grand Sport LS3? Contact us for personal help before you order.
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