C5 Corvette NGK V-Power Spark Plugs - LS1

NGK V-Power TR5 Nickel Spark Plugs for C5 Corvette LS1

NGK V-Power TR5 nickel spark plugs, stock number 2238, fit the 1997–2004 C5 Corvette with its stock 5.7L LS1 V8. Each order supplies eight spark plugs in two manufacturer four-packs for a complete eight-cylinder spark-plug replacement.

V-Power brings a V-groove nickel firing surface to your LS1 spark-plug service. The groove helps reduce flame quenching as the air-fuel mixture begins to burn, while the copper core transfers heat away from the firing end. For an owner maintaining a stock C5 for regular road use, the practical appeal is a complete matched set with clearly identified construction and straightforward dry-thread installation.

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

• Body-style years: The removable-roof coupe spans 1997–2004, the convertible starts in 1998, and the LS1 fixed-roof coupe is limited to 1999–2000. Confirm the body and year together when ordering.
• Transmission check: Base coupes and convertibles may have a six-speed manual or four-speed automatic. The 1999–2000 fixed-roof coupe uses the six-speed manual; an automatic is not a factory FRC configuration.
• Application gap: Use 0.040 inch (1.02 mm) for this stock LS1 fitment. Measure every plug before installation; the supplied preset is not a substitute for the required application setting. Keep the checked gap with your service notes for future reference.
• 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

• 1997–2004 C5 Corvette
• Coupe 1997–2004; convertible 1998–2004; fixed-roof coupe 1999–2000
• 5.7L LS1 V8, stock configuration
• Six-speed manual or four-speed automatic; FRC manual only

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 C5 Corvette LS1, contact us for personal assistance with the fitment details and the complete eight-plug order.