Iridium Spark Plug

Engineered with an iridium tip, this spark plug provides superior durability and a high melting point, contributing to excellent wear resistance and overall engine performance. Its design aims to be an exact replacement for original components, ensuring proper fit and function. Key specifications include a 14mm thread size with a 1.25mm pitch, a tapered seat, and a 17.50mm (0.68") reach. The plug features a resistor with a value between 4-7.5K Ohm and a hex size of 5/8" (16mm). The center electrode is made of copper, while the ground electrode is nickel, featuring a single prong electrode with a taper cut shape. It operates within a heat range of 4 and comes pre-gapped at .040". While this ACDelco spark plug is designed for a wide range of applications, it is important to note that some sources suggest the 41-110 may no longer be the recommended or manufactured part for certain applications, with mentions of it being an NGK plug. Fitment information from various sources indicates compatibility with specific Chevrolet and GMC models, including Silverado, Suburban, Avalanche, Express, and Yukon, particularly with 5.3L, 6.0L, and 6.2L V8 LS engines, and for model years like 2000-2013. However, direct cross-references and compatibility details should always be verified for your specific vehicle. It is also noted that the 41-162 spark plug is a different size, being noticeably shorter than the 41-110. Some user reports suggest the 41-110 can improve engine performance and eliminate misfires at idle, leading to better low-end engine response.