MAHLE 3021287B Performance Piston Ring Set Bore - 4.100in 1.0mm

The MAHLE 3021287B is a high-performance piston ring set engineered for 4.100-inch bore engines with a 1.0mm, 1.0mm, 2.0mm ring configuration. This performance ring set features MAHLE's advanced Napier steel second compression ring design, delivering superior sealing and durability for demanding automotive applications.

Key Features:

• Precision-engineered for 4.100-inch cylinder bore diameter
• Low-drag 1.0mm top ring with advanced coating technology for reduced friction and increased horsepower
• Napier steel second compression ring provides exceptional oil control and cylinder wall scraping
• 2.0mm three-piece oil control ring ensures optimal oil management
• .136-inch radial wall thickness for strength and stability
• File-fit design allows precise end gap adjustment for optimal sealing
• Premium materials and coatings resist breakage, wear, and high-temperature degradation

MAHLE performance piston rings are developed using advanced simulation and computer modeling to minimize friction while maximizing sealing efficiency. Each ring set is manufactured to exacting tolerances using premium alloy materials and advanced coating processes, making them ideal for high-performance street engines, racing applications, and demanding rebuild projects. The complete set includes compression rings and oil control rings for one cylinder.