Enginetech M39516-STD Premium Piston Ring Set for Ford Mazda 4.0L V6

The Enginetech M39516-STD is a premium piston ring set engineered for Ford and Mazda 4.0L (244 cubic inch) V6 engines. This complete six-cylinder ring set features a ductile iron top compression ring for superior strength and durability in high-stress conditions.

Key Specifications:

• Bore diameter: 3.951 inches (100.38mm) standard size
• Ring stack configuration: 1.6mm / 1.75mm / 3.5mm widths
• Six-cylinder complete set
• Premium ductile top compression ring construction
• Molybdenum-faced compression rings for enhanced wear resistance

Compatibility Notes:

• Cross-references to Perfect Circle 41550 and Hastings 2M4627
• Designed for use with Enginetech P5072(6) or P3090(6) pistons
• Available in standard, .50mm, .75mm, and 1.0mm oversizes
• This listing is for standard bore size (-STD)

Enginetech piston rings are manufactured using high-quality materials including gray iron, ductile iron, and high-strength steel. The compression rings feature various face designs and coatings optimized for specific engine requirements, while oil ring assemblies are designed for ease of installation to prevent overlap during assembly.