SYKRSS Iridium Spark Plugs Set of 6 — 41-109 Direct-Fit for GM 2.4L/3.0L/3.6L Engines, Iridium Tip & Copper Core

SYKRSS Iridium Spark Plug set 41-109 is a six-piece replacement kit engineered to match OE fit and deliver consistent ignition for compatible 2.4L, 3.0L and 3.6L GM engines.

These replacement spark plugs are designed as direct-fit alternatives to OEM part numbers 41-109, 12622561, 12681660 and ILTR6E11. Built with an iridium tip and copper-core construction inside a high-grade ceramic insulator, the plugs aim to provide steady spark performance across a wide RPM range. The set of six covers multi-cylinder engines commonly found in Buick, Cadillac, Chevrolet, GMC and other compatible models—offering a complete service kit for routine maintenance or tune-ups.

Which vehicles and engines are these spark plugs compatible with?

The SYKRSS 41-109 plugs support numerous GM platforms and some related makes. They are intended for many 2.4L inline-4 and 3.0L/3.6L V6 applications produced in the 2010s and early 2020s.

• Fits Buick Enclave, LaCrosse and Allure models (specified years).
• Compatible with Cadillac ATS, CTS, SRX, XTS and related GM sedans/SUVs.
• Works with Chevrolet Camaro, Equinox, Impala, Malibu, Traverse and select Colorado/Caprice models.
• Also fits GMC Acadia, Terrain, Canyon and select Saturn/Saab variants—check vehicle specifics before purchasing.

How do these iridium plugs affect starting and engine response?

Iridium tips provide a concentrated electrode that supports reliable spark formation at lower voltages, which helps consistent starts and smoother throttle response under various loads. While individual results depend on the vehicle and condition of other ignition components, these plugs are built to stabilize combustion through the engine's operating range.

• Concentrated spark from iridium tip promotes consistent ignitions.
• Copper core supports thermal transfer to reduce fouling risk.
• Designed to perform reliably across idle, cruise and higher RPMs.

What quality controls and materials are used in SYKRSS spark plugs?

SYKRSS assembles these plugs with an iridium firing end and a copper core combined with precision-molded ceramic insulation. Each plug undergoes testing to ensure reliable high-voltage performance and consistent spark delivery throughout typical engine speeds.

• Iridium electrode for wear resistance and focused spark.
• Copper core for effective heat conduction and durability.
• Manufacturing tests aim to reduce misfires, backfiring and uneven idling.

What comes in the package and what support does SYKRSS provide?

The kit ships with six spark plugs and a user manual. SYKRSS offers a one-year customer support window and commits to responding to inquiries within 48 hours to assist with fitment or product questions.

• Included: 6x SYKRSS 41-109 iridium spark plugs and one manual.
• Warranty/support: 1-year assistance and 48-hour response promise.
• Advice: verify engine code and OEM part number before installation.

Who is this for: Automotive DIYers, independent mechanics and fleet managers who need an OE-fit, multi-pack ignition solution for mid-2010s GM vehicles and related models. Choose this set if you want iridium-tipped, copper-core plugs that are intended as direct replacements for the listed OEM numbers and provide a coordinated six-plug service kit for routine maintenance or engine tune-ups.