Description
When you’re building or rebuilding a high-performance 8-cylinder engine, piston ring quality directly impacts compression, blow-by control, and oil consumption. MAHLE’s plasma moly-coated rings deliver the durability and precision fit needed for sustained power delivery, whether you’re chasing track times or maximizing street performance. These file-fit rings demand attention to detail during installation, but reward you with superior sealing and extended ring life in demanding applications.
- Bore: 4.050 inches
- Top ring: 0.043 inches
- Second ring: 0.043 inches
- Oil ring: 3.0 mm
- Low-tension design
- Plasma moly coating
- File-fit rings
- 8-cylinder kit
- MPN: 4055ML-043






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