The Enginetech S81236-STD Engine Premium Piston Ring Complete Set offers high-quality components designed to restore engine performance and efficiency. Engineered specifically for rebuilding engines, this set includes precision-machined piston rings that meet SAE guidelines for consistent end gaps, ensuring optimal sealing and combustion. The set features a top compression ring thickness of 1.50 mm, a second compression ring thickness of 1.75 mm, and an oil ring thickness of 2.00 mm, providing a balanced combination for durability and performance. The outside diameter of the rings measures approximately 3.189 inches, making it suitable for various engine rebuild applications. As part of Enginetech’s extensive product line, this set is ideal for import and domestic engines, including specific models from Audi such as the A6 Quattro, Allroad Quattro, and S4 from 2000 to 2005. With a focus on quality and reliability, Enginetech parts are designed for engine rebuilders who demand precision and longevity in their components. This complete set ensures proper ring fitment and sealing, contributing to improved compression, power output, and engine efficiency. Whether rebuilding an engine for performance, restoration, or maintenance, the Enginetech S81236-STD piston ring set provides the dependable quality needed for a successful engine overhaul.Features:Consistent end gaps following SAE guidelines for reliable engine performanceTop compression ring thickness: 1.50 mm for effective sealingSecond compression ring thickness: 1.75 mm for durability and performanceOil ring thickness: 2.00 mm to optimize oil control and reduce blow-byRing outside diameter: approximately 3.189 inches to fit specified enginesEngineered specifically for import and domestic engine rebuildsCompatible with a range of Audi models including A6 Quattro, Allroad Quattro, and S4 from 2000 to 2005Designed for engine rebuilders requiring high-quality, reliable piston ringsPart of Enginetech’s comprehensive line of engine components for professional rebuilds Fits Following Models: 2000 Audi A6 Quattro 2000 Audi S4 2001 Audi A6 Quattro 2001 Audi Allroad Quattro 2001 Audi S4 2002 Audi A6 Quattro 2002 Audi Allroad Quattro 2002 Audi S4 2003 Audi A6 Quattro 2003 Audi Allroad Quattro 2004 Audi A6 Quattro 2004 Audi Allroad Quattro 2005 Audi Allroad Quattrotable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Features: Top Compression Ring Thickness: 1.50 mm Second Compression Ring Thickness: 1.75 mm Oil Ring Thickness: 2.00 mm Ring Outside Diameter: 3.189 in Aaiaid Part Number: BBPTS81236-STD Part Number: S81236-STD Brand Aaia: BBPT