The Enginetech R40058-030 Engine Cast Iron Piston Ring Complete Set is designed for reliable performance in engines with a 4-inch bore diameter. Crafted from durable cast iron, these piston rings are engineered to provide optimal sealing and wear resistance, ensuring your engine runs smoothly and efficiently. This complete set includes top compression rings, second compression rings, and oil rings, all manufactured to meet strict SAE guidelines for consistent end gaps and precise fitment. The top and second compression rings feature a thickness of 5/64 inch, while the oil ring has a thickness of 3/16 inch, providing balanced sealing and oil control for your engine's combustion process. Ideal for engine rebuilders and mechanics, this set offers a high-quality solution to restore engine performance and longevity. Enginetech has been family-owned and operated since 1982, committed to providing high-quality engine parts nationwide. Their parts are designed specifically for engine rebuilders, with a focus on quality, precision, and customer satisfaction. Whether you're working on import or domestic engines, this piston ring set is an essential component for achieving optimal engine compression and efficiency. Trust Enginetech's expertise and dedication to excellence to keep your engine running at peak performance for miles to come.

Features:

• Designed for 4-inch bore diameter engines

• Constructed from durable cast iron for wear resistance

• Complete set includes top, second compression, and oil rings

• Consistent end gaps following SAE guidelines

• Top and second compression rings are 5/64 inch thick

• Oil ring thickness is 3/16 inch

• Engineered specifically for engine rebuilders and mechanics

• Part of Enginetech's high-quality engine parts line