Mahle 42250CP Engine Piston Ring Set

Engine Piston Ring Set for Acura and Honda Vehicles

The Mahle 42250CP engine piston ring set is designed for precise fitment and reliable performance in select Acura and Honda models. Engineered with premium materials and coatings, this piston ring set supports optimal engine compression and oil control for vehicles like the Honda Accord, Pilot, and Acura MDX.

• Bore diameter of 3.503 inches for accurate cylinder fit
• Premium item grade ensuring durability and consistent performance
• Shallow groove oil ring assembly made from stainless steel for corrosion resistance
• Oil ring assembly thickness of 2.50 mm for effective oil control
• Gas nitride coating on piston ring face to reduce wear and improve sealing
• Standard piston ring oversize for direct replacement
• Second ring constructed from ductile iron with 1.20 mm axial height
• Top ring made of stainless steel with 1.20 mm thickness for enhanced durability

Technical Details and Material Composition

The Mahle 42250CP piston ring set features a combination of stainless steel and ductile iron materials tailored for engine longevity and performance. The top ring and oil ring assembly utilize stainless steel, providing resistance to corrosion and heat, while the second ring is crafted from ductile iron to maintain strength under high pressure. The gas nitride face coating on the piston rings reduces friction and wear, contributing to improved engine efficiency. The shallow groove design of the oil ring assembly ensures effective oil scraping without excessive oil consumption, maintaining proper lubrication and minimizing blow-by.

Compatible Acura and Honda Models

This piston ring set is compatible with a range of Acura and Honda vehicles, including the Acura MDX, RL, TL, and TSX, as well as Honda models such as the Accord, Accord Crosstour, Crosstour, Odyssey, Pilot, RDX, and Ridgeline. The precise 3.503-inch bore diameter and standard oversize make it suitable for direct replacement in these engines, ensuring proper sealing and engine performance.

Common Engine Issues Addressed

• Reduced engine compression due to worn or damaged piston rings
• Excessive oil consumption caused by ineffective oil ring sealing
• Increased blow-by leading to decreased engine efficiency
• Engine noise and rough idling from poor piston ring sealing
• Premature wear of cylinder walls due to inadequate ring performance

Installation Notes and Tips

• Verify engine bore diameter matches 3.503 inches before installation
• Inspect cylinder walls for wear or damage prior to piston ring replacement
• Use proper ring compressors and follow manufacturer torque specifications
• Ensure piston rings are installed in correct orientation and stagger ring gaps
• Break in the engine according to vehicle manufacturer guidelines after installation

Quality Assurance and Warranty

Mahle piston ring sets are manufactured to meet strict quality standards, using premium materials and coatings to ensure durability and consistent engine performance. The 42250CP part number is backed by Mahle's quality assurance processes. Please refer to Mahle's official warranty policy for specific coverage details.