SYKRSS Iridium Spark Plugs 41-110 — 8-Pack for GM V6/V8, Iridium Tip & Copper Core

SYKRSS Iridium Spark Plug 41-110 is an eight-pack replacement iridium spark plug set engineered to match factory fit and deliver reliable ignition performance for many GM V6 and V8 engines.

This SYKRSS kit contains eight iridium-tipped plugs built to the original equipment form and fit, including compatibility with multiple Chevrolet, GMC, Cadillac, Buick and Pontiac models. Constructed with a durable iridium firing tip, copper core and ceramic insulator, these plugs are designed for consistent spark delivery across a wide RPM range and for long service intervals. The set ships with a user manual and a one-year support promise from SYKRSS.

Which vehicles does the SYKRSS 41-110 fit?

These plugs are intended for a broad range of GM vehicles across model years in the 2000s and 2010s. They replace OE part numbers including 41-110, 1465, 9405 and 94567, but always verify fitment against your vehicle’s engine code and service manual.

• Chevrolet: Silverado 1500 (2003–2013), Avalanche (2007–2013), Suburban and Tahoe models
• GMC: Sierra 2500, Yukon (selected years)
• Cadillac and Buick: CTS, Escalade (selected years), Allure, LaCrosse
• Pontiac and Hummer: Firebird (2000–2002), H2/H3 (2008–2009)

How do these iridium plugs affect starting and efficiency?

The iridium tip provides a fine, durable electrode that promotes a strong, stable spark at ignition. That can help improve cold starts and stabilize combustion under varying loads, while the copper core supports efficient heat transfer from the firing tip.

• Iridium fine-tip for focused spark energy and long life
• Copper core improves thermal conductivity and performance stability
• Ceramic insulator for reliable voltage isolation across temperatures

Are SYKRSS 41-110 plugs quality tested and OE-equivalent?

SYKRSS manufactures these plugs to meet or exceed OE specifications for shape, thread, and electrode design. Each plug undergoes testing to confirm consistent high-voltage output and reliable operation throughout typical engine speed ranges.

• Built to match OEM dimensions and thread engagement
• Quality control checks for ignition performance and durability
• Packaged set includes eight plugs plus a manual

What should I expect during installation and service life?

Installation follows standard spark plug replacement procedures: gap verification (if required by vehicle spec), torque to manufacturer values, and inspection for any thread or seating issues. Iridium plugs are formulated for longer intervals than conventional copper plugs, but always follow your vehicle’s maintenance schedule.

• Verify gap and torque to OEM specifications before final tightening
• Use anti-seize or dielectric compound only if your vehicle manual recommends it
• Monitor performance and replace per manufacturer interval or when symptoms appear

Who is this for: The SYKRSS Iridium Spark Plug 41-110 eight-pack is aimed at DIY mechanics and professional technicians maintaining GM V6/V8 engines across Chevrolet, GMC, Cadillac, Buick, Hummer and Pontiac lineups. Choose this set if you want OE-equivalent fit, longer-lasting iridium electrodes, and a full eight-plug kit for V8 engines or complete replacement jobs that require matching plugs by cylinder bank.