The Enginetech M39458-030 Engine Premium Piston Ring Complete Set is designed to deliver reliable sealing and enhanced engine efficiency. Crafted with precision, this set includes high-quality piston rings that meet strict SAE guidelines, ensuring consistent end gaps for optimal compression and oil control. The set features a top compression ring with a thickness of 3/32 inch, a second compression ring at 5/64 inch, and an oil ring measuring 3/16 inch, all engineered to provide durable performance in both import and domestic engines. This comprehensive set is suitable for a wide range of engine rebuilds, offering a perfect fit with a ring outside diameter of 3.938 inches.Enginetech, a family-owned company since 1982, specializes in manufacturing engine parts tailored specifically for engine rebuilders. Their parts are known for their quality, precision, and consistency, making them a trusted choice for professional mechanics and DIY enthusiasts alike. The M39458-030 set is designed to meet the demanding needs of engine rebuilding projects, reducing the risk of leaks and ensuring long-lasting performance. Whether you're restoring a classic engine or performing routine maintenance, this piston ring set provides the reliability and precision you require.Each component in this set is engineered for perfect fitment and durability, contributing to improved engine compression, reduced oil consumption, and overall smoother operation. With easy installation and adherence to industry standards, the Enginetech M39458-030 piston rings are an excellent choice for those seeking quality parts backed by years of expertise and a commitment to customer satisfaction. Trust Enginetech to supply the essential components needed for a successful engine rebuild, ensuring your engine performs at its best for miles to come.Features:Top compression ring thickness: 3/32 inch for effective sealingSecond compression ring thickness: 5/64 inch for durabilityOil ring thickness: 3/16 inch for optimal oil controlRing outside diameter: 3.938 inches for precise fitEngine rebuild quality: Designed specifically for professional and DIY engine rebuildersTrusted brand: Enginetech, a family-owned company since 1982table.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: BBPTM39458-030 Part Number: M39458-030 Brand Aaia: BBPT