8 Pack Iridium Spark Plugs Replace OEM# 41-110 41-162

Ozikutech 8 Pack Iridium Spark Plugs are direct-fit replacements designed to restore consistent ignition and reliable performance for many GM V8 engines.

If your Chevrolet, GMC, Cadillac, Buick, Hummer, or Pontiac with an LS-series or similar V8 is showing rough starts, stumble under load, or decreased throttle response, these iridium plugs offer a precision electrode and a factory-equivalent gap to bring combustion back to specification. Each set contains eight plugs pre-gapped to 0.04" (1.0 mm) for straightforward installation into compatible 4.8L–8.1L engines across commonly owned model years.

Which vehicles and engines do these plugs fit?

These spark plugs target a broad range of GM platforms and years with LS-family and related V8 engines. Compatibility covers light trucks, SUVs, performance cars, and vans—check fitment against your vehicle’s year, model, and engine displacement before purchase.

• Chevrolet: Silverado, Tahoe, Suburban, Corvette, Camaro, Avalanche, Express, Impala, Colorado and more (1997–2018 ranges noted).
• GMC: Sierra, Yukon, Savana, Canyon, Envoy and HD variants (2000–2018 ranges noted).
• Other makes: Cadillac Escalade models, Buick Rainier/LaCrosse, Hummer H2/H3, Pontiac GTO/Firebird/Grand Prix and others.
• OEM cross-reference numbers included for verification (41-110, 41-162, 41-985, 9602, 19417055, 12621258, 12680072).

How do these iridium plugs affect engine performance and reliability?

Iridium alloys provide a finer, stronger electrode that promotes a more focused spark and longer service life than conventional copper plugs. They help restore efficient combustion, which supports smoother idle, more consistent throttle response, and easier cold starts when compared to worn stock plugs.

• 0.04" (1.0 mm) pre-gap for accurate ignition timing at install.
• Durable iridium center electrode resists wear and erosion.
• Improved spark concentration can aid fuel burn efficiency and drivability.
• Sold in an eight-pack to replace all cylinders in V8 engines at once.

What should I know about installation and maintenance?

Installation is straightforward for anyone comfortable with basic engine work: remove coils or wires, back out old plugs, install the new iridium plugs to torque specs, and reassemble. Use the vehicle manufacturer’s torque setting and anti-seize recommendations only if specified—over-torquing can damage threads in aluminum heads.

• Pre-gapped to 0.04"; verify gap before installation if desired.
• Tighten to the OEM torque spec for your engine head material.
• Replace all eight plugs at once for balanced combustion and consistent performance.
• Consider using a torque wrench and proper spark plug socket for correct seating.

How do I confirm these are the right replacement part numbers?

Cross-reference the OEM numbers listed on your vehicle’s service information or on the old spark plugs. The Ozikutech set is manufactured to match multiple GM reference numbers, but confirming fitment by year, engine code, and OEM part number avoids misorders.

• Included OEM cross-reference: 41-110, 41-162, 41-985, 9602, 41-962, 19417055, 12621258, 12680072.
• Compare with your owner’s manual or the markings on removed plugs.
• When in doubt, consult a parts department with your VIN for precise fitment.

Who is this for? Owners and mechanics servicing GM V8 vehicles who need a complete eight-cylinder spark plug replacement with iridium durability and factory-equivalent gap. Ideal for drivers restoring performance after high mileage or preparing a truck, SUV, or performance car for reliable daily use or towing. These plugs suit anyone wanting an OEM-replacement style upgrade without changing ignition system components.