Key benefits Restores proper oil control and compression sealing by matching original ring dimensions. Reduces oil consumption and blow-by when worn rings are replaced, improving engine reliability. Precision fit to the specified cylinder diameter minimizes installation adjustments and downtime. Important specifications Collector ring thickness: 1.55 mm Oil ring thickness: 2.50 mm Cylinder diameter: 68.30 mm What this product does The collector ring (1.55 mm) and oil ring (2.50 mm) are manufactured to the listed dimensions to control oil distribution and support piston sealing. Sized for a 68.30 mm cylinder bore to ensure consistent ring-to-cylinder contact and proper sealing performance. Compatibility (as listed) Compatible with: Quantum, 110600-111600, 120H00-125H00, 127700 - 127800, 128800, 12B800, 12C800, 12D800, 12E800, 12E700, 12C800. 0 and other Why customers choose this item Dimension-matched replacement: Use when original rings are worn or damaged to restore factory clearances. Saves time: Exact thickness and bore sizing reduce trial-and-error fitting. Reliability: Replacing worn rings prevents accelerated cylinder wear and maintains engine performance. Typical applications Routine engine overhaul: Replace worn collector and oil rings during a rebuild on Quantum engines and the listed model ranges. Maintenance service: Use during scheduled maintenance to correct oil consumption or loss of compression on compatible units. Field repair: Quick replacement option for service technicians needing a direct-fit ring set for engines listed in the compatibility section. Installation notes Verify cylinder bore (68.30 mm) and ring thickness requirements before installation. Follow manufacturer torque and break-in procedures after installation to ensure optimal sealing and longevity. If your engine matches the listed compatibility and the dimensions above, this ring set provides a precise, direct-fit replacement to restore oil control and sealing performance.