NGK Iridium IX LTR5IX-11 Spark Plugs for C7 Corvette Z06 LT4
NGK Iridium IX LTR5IX-11 spark plugs, stock number 4344, fit the 2015–2019 C7 Corvette Z06 with the LT4 6.2L supercharged engine. This offer includes eight spark plugs supplied as two packs of four.
Plan your LT4 spark-plug service around a complete matched set for all eight cylinders. The fine iridium tips support consistent ignition and resistance to electrode wear, and the plated shells help protect the threads for later removal. This gives factory-configuration Z06 owners a full V8 replacement quantity in one order, while leaving the condition of the separate wires and coils to be checked as part of the service.
Product Details
- NGK stock number: 4344; design code: LTR5IX-11.
- Fine-wire iridium center electrode: A durable firing tip designed to maintain a consistent spark.
- Eight spark plugs: Two manufacturer packs of four, enough for one V8.
- Spark plugs only: Plug wires and ignition coils are separate components and are not included.
- Trivalent shell plating: Helps resist corrosion and supports removal at a later plug service.
Benefits
- One complete plug order: Replace all eight plugs with a matching Iridium IX design.
- Durable firing tip: Iridium resists electrode wear while supporting stable ignition.
- Service-friendly protection: Plated shells help protect the threads when your LT4 is due for its next plug change.
Important Notes
- Factory-supercharged LT4: Fits the 2015–2019 C7 Z06 coupe and convertible with the stock 6.2L LT4. Manual and automatic transmissions are covered.
- Modified boost: If your Z06 has pulley, supercharger or calibration changes, have your engine builder or tuner confirm the plug specification for that combination before ordering.
- Check before fitting: Confirm LTR5IX-11 and 4344 on the plugs and packaging, then inspect the ceramic insulators and electrodes for damage.
- Installation gap: Use 0.032 inch for this stock LT4 fitment. Measure every plug before installation; the supplied gap is not a substitute for the vehicle’s required setting.
- Protect the fine tip: Use a round-wire or pin gauge. Any adjustment must move only the ground electrode without levering against the center tip. Ask a qualified installer if a large adjustment is needed.
- Dry threads and correct torque: Do not add anti-seize or lubricant. Use the correct spark-plug socket and follow the vehicle’s tightening specification so the plug seats correctly and transfers heat as intended.
CORVETTE COMPATIBILITY
- 2015–2019 C7 Corvette Z06
- LT4 6.2L supercharged engine, stock configuration
- Coupe and convertible
- 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 4344 LTR5IX-11 Iridium IX spark plugs for your C7 Corvette Z06 LT4? Contact us for personal help before you order.
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