The Enginetech M39458-040 Engine Premium Piston Ring Complete Set is designed to deliver reliable performance and durability for a wide range of engines. Manufactured by Enginetech, a family-owned company since 1982, this set offers high-quality components engineered specifically for engine rebuilders and enthusiasts. Each piston ring in this set adheres to SAE guidelines, ensuring consistent end gaps for optimal sealing and performance. The set includes top compression rings with a thickness of 3/32 inch, second compression rings at 5/64 inch, and oil rings measuring 3/16 inch, providing a balanced combination of compression and oil control. The rings feature an outside diameter of approximately 3.938 inches, making them suitable for various engine models requiring precise fit and function. Designed with attention to detail, these rings help restore engine compression, reduce oil consumption, and improve overall efficiency, making them an excellent choice for rebuild projects or performance upgrades. Enginetech parts are engineered for ease of installation and long-lasting performance, backed by a commitment to quality and customer satisfaction. Whether you're rebuilding a domestic or import engine, this piston ring set ensures you achieve the best possible results with a product you can trust. Engine rebuilders and mechanics appreciate the consistency and quality control that Enginetech provides, making this set a dependable option for professional and DIY engine work alike.Features:Consistent end gaps following SAE guidelines for reliable sealingTop compression ring thickness: 3/32 inch for effective compressionSecond compression ring thickness: 5/64 inch for balanced performanceOil ring thickness: 3/16 inch to control oil consumptionRing outside diameter: approximately 3.938 inches for precise fitEngineered specifically for engine rebuilders and enthusiastsHigh-quality materials designed for durability and performanceSuitable for a variety of domestic and import engine applicationstable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Features: Top Compression Ring Thickness: 3/32 in Second Compression Ring Thickness: 5/64 in Oil Ring Thickness: 3/16 in Ring Outside Diameter: 3.938 Aaiaid Part Number: BBPTM39458-040 Part Number: M39458-040 Brand Aaia: BBPT