8Pcs Piston and Rings Set designed for N63B44C engine with a piston size of 88.987mm.Made from steel, this set is built to support operating conditions and maintain structural integrity over time.Compatible with vehicles equipped with 4.4L engines, including models designated for use with OE/OEM part numbers 11258600381, 8600381, 11 25 8 600 381, and 8 600 381.The package includes eight pistons and corresponding rings, providing a complete set for engine rebuilding.machined to meet specifications, the components proper fitment and.Engineered as a direct replacement, the set supports efficient installation and integration into the existing engine system.Suitable for use in applications requiring and consistent performance under stress and thermal loads.