Finding the right spark plugs for a 6.2L LS engine can improve ignition clarity, reduce misfires, and support better fuel economy. This guide highlights top-rated options that work well with LS-family trucks and SUVs, including Silverado, Tahoe, Suburban, and Sierra models. Each pick is evaluated on ignite performance, durability, and compatibility with common LS configurations. The selections below come from trusted brands and are paired with notes on heat range, electrode design, and longevity to help you choose confidently.
| Product | Brand | Key Strengths |
|---|---|---|
| NGK Iridium IX Spark Plugs (8 Pack) – 6.2L LS V8 Compatibility | NGK | Iridium center electrode, improved spark efficiency, corrosion resistance |
| NGK BR7EF #3346 Spark Plugs – Set of 8 for LS Engines | Michigan Motorsports | Two heat ranges colder, V-Power design, strong ignitability for boosted/nitrous setups |
| NGK G-Power Platinum Spark Plugs TR5GP – 8 PCS | NGK | Wide heat range, carbon buildup resistance |
| MCCKLE 41-110 Iridium Spark Plugs & M8-48322 Wires | MCCKLE | Iridium plugs with compatible high-quality wires for LS trucks |
| Michigan Motorsports LS Truck Spark Plug Wire Set – 10mm | Michigan Motorsports | 10mm wires, high EMI/RFI suppression, LS-focused compatibility |
Note: The products listed here cover a range of plug technologies (iridium, platinum, copper) and include both plugs and plug-wire sets. Compatibility generally covers 6.2L LS engines found in Chevrolet and GMC pickups and SUVs from multiple model years. When selecting, consider heat range in relation to boost level, driving style, and whether you plan to run nitrous or forced induction, which may influence the best choice for your setup.
NGK Iridium IX Spark Plugs (8 Pack) For 6.2L LS
NGK Iridium IX Spark Plugs deliver a refined center and ground electrode design for complete combustion and a stronger, more efficient spark over the life of the plug. The corrosion-resistant electrodes help minimize spark-gap growth, contributing to fewer misfires and better fuel economy. This eight-pack provides a ready replacement set for LS-based trucks and SUVs, with the durable shell offering long-lasting sparking capability across a broad operating range.
NGK BR7EF #3346 Spark Plugs – Set of 8 for LS Engines
NGK BR7EF plugs are designed for LS-based V8s with a two-heat-range-colder configuration and a non-projected tip, aimed at maximizing performance in boosted or nitrous-enabled applications. The V-Power design enhances ignitability and reduces quenching, making them a solid choice for owners seeking robust performance under higher power demands while still offering economical value for non-boosted LS engines.
NGK G-Power Platinum Spark Plugs TR5GP – 8 PCS
G-Power Platinum plugs are engineered to operate over a wider heat range than typical plugs, helping resist carbon buildup and pre-ignition. This feature is beneficial for LS engines that see a mix of daily driving and spirited performance, delivering reliable ignition and consistent power delivery across diverse conditions.
MCCKLE 41-110 Iridium Spark Plugs + M8-48322 Wires
This MCCKLE kit combines 41-110 iridium spark plugs with compatible M8-48322 wires, suitable for a broad range of LS-powered Chevy and GMC trucks. The iridium plugs offer durability and strong ignition capabilities, while the included wires are designed to handle the demands of LS systems, contributing to reliable starting and smooth engine performance.
Ozikutech High-Performance Spark Plug Wire Set With Iridium Plugs
This kit blends high-performance spark plug wires with iridium plugs, designed for 1999–2013 Silverado, Tahoe, Suburban, Yukon, and other LS-based platforms. It emphasizes a heavy-gauge, low-resistance wire and pre-gapped iridium plugs, aiming for reliable ignition at higher temperatures and under boost, while maintaining consistent power delivery across the engine’s RPM range.
Michigan Motorsports LS Truck Spark Plug Wire Set – 10mm
Michigan Motorsports’ LS-specific spark plug wires offer 10mm construction and strong EMI suppression for LS-based trucks and SUVs. The set targets multiple LS engines, including 4.8L, 5.3L, 6.0L, and 6.2L configurations, providing robust spark energy and durable boots for long-term performance in demanding driving scenarios.
Buying Guide: Key Purchase Considerations
- Engine and heat range compatibility: LS engines span a range of models and power levels. If you run boost or nitrous, colder plugs like the BR7EF may help prevent detonation and fouling, while iridium options offer longevity with reliable ignition.
- Electrode design and material: Iridium and platinum plugs generally provide longer life and stable ignition, especially under high load. Copper or copper-core plugs often offer quick heat dissipation but shorter service life.
- Ignition system and wiring: A high-quality wire set can reduce resistance and EMI, improving spark delivery to the plugs. If you’re upgrading ignition components, ensure the wires and plugs are matched to your LS setup.
- Application scope: Some products are tuned for boosted or nitrous-equipped engines, while others target stock or lightly modified LS builds. Select based on your planned level of modification and driving style.
- Maintenance interval and cost: Iridium and platinum plugs typically last longer than copper variants, potentially reducing maintenance frequency but at a higher upfront cost. Balance lifespan with expected driving conditions.
- Installation considerations: Verify the exact vehicle year and model to ensure correct heat range and thread size, and follow torque specifications when installing to avoid thread damage or misfiring.