C6 Corvette Grand Sport NGK V-Power Spark Plugs - LS3

NGK V-Power TR5 Nickel Spark Plugs for C6 Corvette Grand Sport LS3

NGK V-Power TR5 nickel spark plugs, stock number 2238, fit the 2010–2013 C6 Corvette Grand Sport with its stock 6.2L LS3 V8. Each order supplies eight spark plugs in two manufacturer four-packs for a complete eight-cylinder spark-plug replacement.

V-Power combines a nickel V-groove center electrode with a heat-conducting copper core for your Grand Sport’s LS3. The groove supports ignitability and reduces quenching, while the ceramic insulates the plug electrically. A complete eight-plug set lets you prepare both cylinder banks for one service session, with consistent part identity throughout. The plated shell also removes the need to add anti-seize when following the vehicle’s tightening procedure.

Product Details

• Identity: NGK 2238, design code TR5, V-Power nickel spark plugs.
• Firing design: V-groove center electrode with nickel-alloy construction.
• Heat management: 98% pure copper core; high-grade alumina silicate ceramic insulation.
• Shell treatment: Trivalent plating provides corrosion resistance and eliminates the need for anti-seize.
• Package: Eight plugs only. Wires, coils and installation tools are separate.

Benefits

• Ignition support: The V-groove helps improve ignitability while reducing flame quenching.
• Controlled heat flow: The copper core helps dissipate firing-end heat during engine operation.
• Clear service quantity: Two four-packs cover the whole V8, avoiding a half-set order.
• Dry-thread service: The plated shell supports installation without anti-seize, avoiding an unnecessary lubricant that can alter tightening behavior.

Important Notes

• Grand Sport configuration: Match the 2010–2013 model years and stock 6.2L LS3. Both coupe and convertible bodies are covered, with six-speed manual or six-speed automatic transmissions and eight plugs per engine.
• Oil-system distinction: The manual Grand Sport coupe has dry-sump lubrication, while automatic coupes and convertibles use a wet sump. These factory configurations retain the LS3 spark-plug selection; follow the correct vehicle service procedure.
• Application gap: Use 0.040 inch (1.02 mm) for this stock LS3 fitment. Measure every plug before installation; the supplied preset is not a substitute for the required application setting.
• Installation: Allow the engine to cool before installation. Follow the vehicle’s tightening specification on clean, dry threads without anti-seize. Inspect the ceramic and electrodes for damage, and use the correct spark-plug socket rather than forcing a plug into the cylinder head.
• Modified engines: Have your engine builder confirm the plug specification and gap if compression, boost or other engine requirements have changed.

CORVETTE COMPATIBILITY

• 2010–2013 C6 Corvette Grand Sport
• Coupe and convertible
• 6.2L LS3 V8, stock configuration
• Six-speed manual or six-speed automatic

Why Buy from Custom Corvette Accessories?

We’re fellow Corvette owners at Custom Corvette Accessories, offering one-on-one customer service. For help selecting NGK 2238 TR5 V-Power nickel spark plugs for your C6 Corvette Grand Sport LS3, contact us for personal assistance with the fitment details and the complete eight-plug order.